/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

/* Core Web Vitals Optimizations */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Prevent CLS - Reserve space for images */
img[width][height] {
    aspect-ratio: attr(width) / attr(height);
}

/* Optimize font loading */
@font-face {
    font-family: 'Inter';
    font-display: swap;
}

@font-face {
    font-family: 'Poppins';
    font-display: swap;
}

/* Reduce layout shift for hero */
.hero {
    min-height: 500px;
}

/* Optimize critical CSS - above the fold */
.navbar,
.hero {
    content-visibility: auto;
}

.hidden {
    display: none !important;
}

:root {
    /* Brand + palette (LPG Industry - Professional) */
    --color-brand: #0B4AA6; /* Deep Energy Blue - trust, safety, infrastructure */
    --color-brand-2: #0A3D8C;
    --color-brand-light: #1E5BB8;
    --color-accent: #FF8A00; /* Safety Orange / LPG Flame Accent - energy, action */
    --color-accent-2: #E67A00;
    --color-accent-light: #FF9F33;

    /* Neutrals (Professional Gray Scale) */
    --text-900: #1F2937; /* Charcoal text */
    --text-700: #374151;
    --text-500: #6B7280; /* Muted gray text */
    --text-300: #9CA3AF;
    --bg-0: #FFFFFF;
    --bg-1: #F8FAFC; /* Light backgrounds */
    --bg-2: #F1F5F9;
    --border: #E5E7EB; /* Borders/dividers */
    --border-light: #F3F4F6;

    /* Back-compat tokens used throughout existing CSS */
    --primary-color: var(--color-accent);
    --secondary-color: var(--color-brand);
    --text-dark: var(--text-900);
    --text-light: var(--text-500);
    --bg-light: var(--bg-1);
    --white: var(--bg-0);

    /* Typography System (Professional & Clean) */
    --font-heading: 'Poppins', 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', 'Roboto', ui-sans-serif, system-ui, -apple-system, sans-serif;
    --font-sans: var(--font-body);
    --fs-0: 0.875rem; /* 14px */
    --fs-1: 1rem; /* 16px */
    --fs-2: 1.125rem; /* 18px */
    --fs-3: 1.25rem; /* 20px */
    --fs-4: 1.5rem; /* 24px */
    --fs-5: 1.875rem; /* 30px */
    --fs-6: 2.25rem; /* 36px */
    --fs-7: 3rem; /* 48px */
    --line-height-tight: 1.5;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.7;

    /* Radius (Professional - Slightly Rounded) */
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Shadows (Subtle, Professional) */
    --shadow-sm: 0 1px 2px rgba(31, 41, 55, 0.05), 0 1px 1px rgba(31, 41, 55, 0.04);
    --shadow: 0 2px 4px rgba(31, 41, 55, 0.08), 0 1px 2px rgba(31, 41, 55, 0.06);
    --shadow-md: 0 4px 8px rgba(31, 41, 55, 0.1), 0 2px 4px rgba(31, 41, 55, 0.08);
    --shadow-lg: 0 8px 16px rgba(31, 41, 55, 0.12), 0 4px 8px rgba(31, 41, 55, 0.1);
    --shadow-hover: 0 6px 12px rgba(31, 41, 55, 0.12), 0 3px 6px rgba(31, 41, 55, 0.1);

    /* Motion (Professional, Calm) */
    --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --dur-1: 200ms;
    --dur-2: 250ms;
    --dur-3: 300ms;

}

/* Smooth transitions for color changes */
body,
.navbar,
.hero,
section,
.card,
.product-card,
.service-card,
.btn,
.form-input,
.product-detail-panel,
.order-panel-dialog,
.order-sidecard,
.checkout-dialog,
.cart-toast,
.site-notification {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--fs-1);
    font-weight: 400;
    line-height: var(--line-height-normal);
    letter-spacing: -0.01em;
    color: var(--text-900);
    background: var(--bg-0);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
}

* {
    -webkit-tap-highlight-color: transparent;
}

*:focus {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--color-brand);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section[id] {
    scroll-margin-top: 90px;
}

a {
    color: inherit;
}

img {
    display: block;
    max-width: 100%;
}

::selection {
    background: rgba(208, 138, 10, 0.22);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
    color: var(--text-900);
}

h1 {
    font-weight: 700;
    font-size: var(--fs-6);
}

h2 {
    font-size: var(--fs-5);
}

h3 {
    font-size: var(--fs-4);
}

h4 {
    font-size: var(--fs-3);
}

p {
    color: var(--text-700);
    line-height: var(--line-height-relaxed);
}

label {
    color: var(--text-700);
    font-weight: 500;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
        scroll-behavior: auto !important;
    }
}

@keyframes pageFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes riseFadeIn {
    from {
        opacity: 0;
        transform: translate3d(0, 10px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@media (prefers-reduced-motion: no-preference) {
    body {
        animation: pageFadeIn 520ms var(--ease-out) both;
    }

    .hero-content {
        animation: riseFadeIn 720ms var(--ease-out) 90ms both;
        will-change: transform, opacity;
    }

    .about-content,
    .services-grid,
    .products-grid,
    .refilling-content,
    .contact-wrapper,
    .footer-content {
        animation: riseFadeIn 760ms var(--ease-out) 140ms both;
        will-change: transform, opacity;
    }
}

/* ============================================
   ORDER LPG CYLINDER PANEL (ENTRY + ANIMATION ONLY)
   Scoped, framework-free, responsive drawer/sheet
   ============================================ */
:root {
    --order-panel-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --order-panel-dur: 360ms;
    --order-panel-backdrop: rgba(2, 6, 23, 0.55);
    --order-panel-surface: var(--bg-0);
    --order-panel-shadow: 0 28px 80px rgba(2, 6, 23, 0.35);
}

body.order-panel-open,
body.order-sidecard-open,
body.checkout-open {
    overflow: hidden;
}

body.order-sidecard-open {
    overflow: hidden;
}

.order-panel-layer {
    position: fixed;
    inset: 0;
    z-index: 3000;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--order-panel-dur) var(--order-panel-ease);
}

.order-panel-layer.is-open {
    pointer-events: auto;
    opacity: 1;
}

.order-panel-backdrop {
    position: absolute;
    inset: 0;
    background: var(--order-panel-backdrop);
    opacity: 0;
    transition: opacity var(--order-panel-dur) var(--order-panel-ease);
}

.order-panel-layer.is-open .order-panel-backdrop {
    opacity: 1;
}

.order-panel-dialog {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-height: 90vh;
    background: var(--order-panel-surface);
    border-top-left-radius: 18px;
    border-top-right-radius: 18px;
    box-shadow: var(--order-panel-shadow);
    overflow: hidden;

    opacity: 0;
    transform: translate3d(0, 100%, 0);
    transition:
        transform var(--order-panel-dur) var(--order-panel-ease),
        opacity var(--order-panel-dur) var(--order-panel-ease);
    will-change: transform, opacity;
}

.order-panel-layer.is-open .order-panel-dialog {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

.order-panel-content {
    padding: 20px 20px 28px;
    max-height: 90vh;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

.order-panel-content p {
    margin: 0;
    color: var(--text-700);
    font-size: var(--fs-2);
}

/* Order Form (content-only styles; do not affect panel positioning/animation) */
.order-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.order-form__header {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.order-form__title {
    font-size: var(--fs-4);
    color: var(--text-900);
    line-height: 1.2;
}

.order-form__subtitle {
    margin: 0;
    color: var(--text-500);
    font-size: var(--fs-1);
}

.order-form__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.order-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

.order-field__label {
    font-weight: 700;
    color: var(--text-900);
    font-size: 0.95rem;
}

.order-field__control {
    width: 100%;
    border: 1px solid rgba(15, 23, 42, 0.14);
    border-radius: 12px;
    padding: 12px 12px;
    background: var(--bg-0);
    color: var(--text-900);
    transition: border-color var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out);
}

.order-field__control--textarea {
    resize: vertical;
    min-height: 92px;
}

.order-field__control:focus-visible {
    outline: none;
    border-color: rgba(11, 58, 91, 0.55);
    box-shadow: 0 0 0 3px rgba(11, 58, 91, 0.16);
}

.order-field__control[aria-invalid="true"] {
    border-color: rgba(220, 38, 38, 0.55);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.order-field__help {
    color: var(--text-500);
    font-size: 0.9rem;
    margin-top: -2px;
}

.order-field__error {
    min-height: 18px;
    color: #b91c1c;
    font-size: 0.9rem;
}

.order-field__warn {
    min-height: 18px;
    color: rgba(11, 58, 91, 0.95);
    font-size: 0.92rem;
}

/* Cylinder Type: custom selectable cards (radios hidden but accessible) */
.order-type-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.order-type-card {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 14px;
    border-radius: 14px;
    border: 1px solid rgba(15, 23, 42, 0.14);
    background: rgba(246, 248, 251, 0.55);
    cursor: pointer;
    user-select: none;
    transition:
        border-color 220ms var(--order-panel-ease),
        background 220ms var(--order-panel-ease),
        transform 140ms var(--order-panel-ease);
}

.order-type-card:active {
    transform: translateY(1px);
}

.order-type-card__radio {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.order-type-card__main {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.order-type-card__title {
    font-weight: 900;
    color: var(--text-900);
    letter-spacing: -0.01em;
}

.order-type-card__meta {
    color: var(--text-500);
    font-size: 0.95rem;
}

.order-type-card__check {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    color: rgba(11, 58, 91, 0.95);
    background: rgba(255, 255, 255, 0.7);
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 220ms var(--order-panel-ease), transform 220ms var(--order-panel-ease);
}

.order-type-card:focus-within {
    outline: 2px solid rgba(11, 58, 91, 0.55);
    outline-offset: 3px;
}

.order-type-card.is-selected {
    border-color: rgba(11, 58, 91, 0.55);
    background: rgba(11, 58, 91, 0.06);
}

.order-type-card.is-selected .order-type-card__check {
    opacity: 1;
    transform: scale(1);
}

.order-stepper {
    display: grid;
    grid-template-columns: 44px 1fr 44px;
    gap: 10px;
    align-items: center;
}

.order-stepper__btn {
    height: 44px;
    width: 44px;
    border-radius: 12px;
    border: 1px solid rgba(15, 23, 42, 0.14);
    background: rgba(246, 248, 251, 0.8);
    color: var(--text-900);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    transition: transform var(--dur-1) var(--ease-out), background var(--dur-2) var(--ease-out);
}

.order-stepper__btn:active {
    transform: translateY(1px);
}

.order-stepper__input {
    height: 44px;
    width: 100%;
    border: 1px solid rgba(15, 23, 42, 0.14);
    border-radius: 12px;
    padding: 10px 12px;
}

.order-coupon {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
}

.order-coupon__btn {
    height: 44px;
    padding: 0 14px;
    border-radius: 12px;
    border: 1px solid rgba(11, 58, 91, 0.35);
    background: transparent;
    color: rgba(11, 58, 91, 0.98);
    font-weight: 700;
    cursor: pointer;
    transition:
        background var(--dur-2) var(--ease-out),
        border-color var(--dur-2) var(--ease-out),
        transform var(--dur-1) var(--ease-out);
}

.order-coupon__btn:hover {
    background: rgba(11, 58, 91, 0.06);
    border-color: rgba(11, 58, 91, 0.5);
}

.order-coupon__btn:active {
    transform: translateY(1px);
}

.order-coupon__btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

.order-price {
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: rgba(246, 248, 251, 0.7);
    border-radius: 14px;
    padding: 14px 14px;
}

.order-price__row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 8px 2px;
    gap: 12px;
}

.order-price__label {
    color: var(--text-700);
    font-weight: 600;
}

.order-price__value {
    color: var(--text-900);
    font-variant-numeric: tabular-nums;
}

.order-price__value.is-struck {
    text-decoration: line-through;
    opacity: 0.65;
}

.order-price__row--subtotal .order-price__value {
    font-weight: 800;
}

.order-price__row--discount .order-price__value {
    color: rgba(11, 58, 91, 0.95);
    font-weight: 800;
}

.order-price__row--final {
    border-top: 1px dashed rgba(15, 23, 42, 0.18);
    margin-top: 6px;
    padding-top: 12px;
}

.order-price__value--final {
    font-size: 1.2rem;
    font-weight: 900;
}

.order-price__motion {
    transition: opacity 220ms var(--order-panel-ease), transform 220ms var(--order-panel-ease);
}

.order-price__motion.is-enter {
    opacity: 0;
    transform: translateY(8px);
}

.order-form .is-hidden {
    display: none !important;
}

.order-form__actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.order-form__submit {
    width: 100%;
    height: 48px;
    border-radius: var(--radius-md);
    border: 0;
    background: var(--color-brand);
    color: var(--white);
    font-weight: 600;
    font-size: var(--fs-1);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: background var(--dur-2) var(--ease-in-out), transform var(--dur-1) var(--ease-in-out), box-shadow var(--dur-2) var(--ease-in-out);
}

.order-form__submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.order-form__submit[disabled] {
    opacity: 0.75;
    cursor: not-allowed;
}

.order-form__spinner {
    width: 16px;
    height: 16px;
    border-radius: 999px;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: rgba(255, 255, 255, 0.95);
    display: none;
}

.order-form__submit.is-loading .order-form__spinner {
    display: inline-block;
    animation: orderSpin 700ms linear infinite;
}

@keyframes orderSpin {
    to {
        transform: rotate(360deg);
    }
}

.order-form__submit-error {
    min-height: 18px;
    color: #b91c1c;
    font-size: 0.92rem;
}

.order-form__submit.is-loading .order-form__submit-text {
    opacity: 0.95;
}

.order-form__submit:hover {
    background: var(--color-brand-2);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.order-form__submit:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

.order-form__note {
    margin: 0;
    color: var(--text-500);
    font-size: 0.9rem;
}

/* Toast */
.order-toast-layer {
    position: fixed;
    inset: auto 0 16px 0;
    z-index: 4000;
    display: grid;
    place-items: center;
    pointer-events: none;
    padding: 0 14px;
}

.order-toast {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 10px;
    width: min(560px, 100%);
    border-radius: 14px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 18px 44px rgba(2, 6, 23, 0.18), 0 10px 22px rgba(2, 6, 23, 0.10);
    padding: 12px 12px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transform: translateY(10px);
    opacity: 0;
    transition: transform 260ms var(--order-panel-ease), opacity 260ms var(--order-panel-ease);
}

.order-toast.is-hidden {
    display: none;
}

.order-toast.is-open {
    transform: translateY(0);
    opacity: 1;
}

.order-toast__text {
    flex: 1;
    color: var(--text-900);
    font-weight: 700;
}

.order-toast__cta {
    height: 40px;
    padding: 0 12px;
    border-radius: 12px;
    border: 1px solid rgba(11, 58, 91, 0.35);
    background: rgba(11, 58, 91, 0.06);
    color: rgba(11, 58, 91, 0.98);
    font-weight: 800;
    cursor: pointer;
}

.order-toast__close {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: transparent;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
}

/* Mobile Toast Fixes */
@media (max-width: 480px) {
    .order-toast-layer {
        bottom: calc(16px + env(safe-area-inset-bottom));
        padding: 0 12px;
        z-index: 9001; /* Above WhatsApp FAB (9000) */
    }

    .order-toast {
        width: 100%;
        padding: 10px 12px;
        gap: 8px;
    }

    .order-toast__text {
        font-size: 0.9rem;
        flex: 1;
        min-width: 0;
    }

    .order-toast__cta {
        height: 36px;
        padding: 0 10px;
        font-size: 0.85rem;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .order-toast__close {
        width: 36px;
        height: 36px;
        flex-shrink: 0;
    }
}

/* Left-side Order Card */
.order-sidecard-layer {
    position: fixed;
    inset: 0;
    z-index: 3400;
    pointer-events: none;
}

.order-sidecard-layer.is-open {
    pointer-events: auto;
}

.order-sidecard-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.55);
    opacity: 0;
    transition: opacity 360ms var(--order-panel-ease);
}

.order-sidecard-layer.is-open .order-sidecard-backdrop {
    opacity: 1;
}

.order-sidecard {
    position: absolute;
    top: 0;
    left: 0;
    height: 100vh;
    width: min(380px, 92vw);
    background: rgba(255, 255, 255, 0.96);
    border-right: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 18px 0 60px rgba(2, 6, 23, 0.18);
    transform: translate3d(-102%, 0, 0);
    opacity: 0;
    transition: transform 360ms var(--order-panel-ease), opacity 360ms var(--order-panel-ease);
    display: flex;
    flex-direction: column;
    outline: none;
    border-top-right-radius: 18px;
    border-bottom-right-radius: 18px;
}

.order-sidecard-layer.is-open .order-sidecard,
.order-sidecard.is-open {
    transform: translate3d(0, 0, 0);
    opacity: 1;
}

.order-sidecard.is-collapsed {
    width: 78px;
    overflow: hidden;
}

.order-sidecard.is-collapsed .order-sidecard__body {
    display: none;
}

.order-sidecard:focus-visible {
    outline: 2px solid rgba(11, 58, 91, 0.55);
    outline-offset: -2px;
}

.order-sidecard__header {
    padding: 14px 14px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
    justify-content: space-between;
    border-bottom: 1px solid rgba(15, 23, 42, 0.10);
}

.order-sidecard__title {
    font-weight: 900;
    color: var(--text-900);
}

.order-sidecard__meta {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-top: 6px;
    flex-wrap: wrap;
}

.order-sidecard__badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-weight: 900;
    font-size: 0.82rem;
    border: 1px solid var(--badge-br, rgba(11, 58, 91, 0.22));
    background: var(--badge-bg, rgba(11, 58, 91, 0.08));
    color: var(--badge-fg, rgba(11, 58, 91, 0.98));
    transition: background 260ms var(--order-panel-ease), color 260ms var(--order-panel-ease), border-color 260ms var(--order-panel-ease);
}

.order-sidecard__badge--confirmed {
    --badge-bg: rgba(11, 58, 91, 0.08);
    --badge-fg: rgba(11, 58, 91, 0.98);
    --badge-br: rgba(11, 58, 91, 0.22);
}

.order-sidecard__badge--preparing {
    --badge-bg: rgba(208, 138, 10, 0.14);
    --badge-fg: rgba(185, 120, 5, 1);
    --badge-br: rgba(208, 138, 10, 0.3);
}

.order-sidecard__badge--pending {
    --badge-bg: rgba(208, 138, 10, 0.14);
    --badge-fg: rgba(185, 120, 5, 1);
    --badge-br: rgba(208, 138, 10, 0.3);
}

.order-sidecard__badge--out_for_delivery {
    --badge-bg: rgba(37, 99, 235, 0.12);
    --badge-fg: rgba(37, 99, 235, 1);
    --badge-br: rgba(37, 99, 235, 0.25);
}

.order-sidecard__badge--delivered {
    --badge-bg: rgba(16, 185, 129, 0.14);
    --badge-fg: rgba(16, 185, 129, 1);
    --badge-br: rgba(16, 185, 129, 0.28);
}

.order-sidecard__badge--cancelled {
    --badge-bg: rgba(220, 38, 38, 0.12);
    --badge-fg: rgba(185, 28, 28, 1);
    --badge-br: rgba(220, 38, 38, 0.22);
}

.order-sidecard__id {
    color: var(--text-500);
    font-weight: 700;
    font-size: 0.9rem;
}

.order-sidecard__actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.order-sidecard__btn {
    height: 38px;
    padding: 0 10px;
    border-radius: 12px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: transparent;
    cursor: pointer;
    font-weight: 800;
}

.order-sidecard__btn--close {
    border-color: rgba(220, 38, 38, 0.25);
    color: rgba(185, 28, 28, 0.98);
}

.order-sidecard__body {
    padding: 14px 14px 16px;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.order-sidecard__row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: baseline;
}

.order-sidecard__row--total {
    margin-top: 6px;
    padding-top: 12px;
    border-top: 1px dashed rgba(15, 23, 42, 0.18);
}

.order-sidecard__label {
    color: var(--text-700);
    font-weight: 700;
}

.order-sidecard__value {
    color: var(--text-900);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.order-sidecard__divider {
    height: 1px;
    background: rgba(15, 23, 42, 0.10);
    margin: 6px 0;
}

.order-sidecard__footer {
    margin-top: 8px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.order-sidecard__primary,
.order-sidecard__secondary {
    height: 44px;
    border-radius: 14px;
    font-weight: 900;
    cursor: pointer;
}

.order-sidecard__primary {
    border: 0;
    background: var(--secondary-color);
    color: var(--white);
}

.order-sidecard__secondary {
    border: 1px solid rgba(11, 58, 91, 0.35);
    background: transparent;
    color: rgba(11, 58, 91, 0.98);
}

.order-sidecard__error {
    grid-column: 1 / -1;
    color: #b91c1c;
    font-size: 0.92rem;
}

/* Checkout / Order Summary Screen */
.checkout-layer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 4000;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--order-panel-dur) var(--order-panel-ease);
}

.checkout-layer.is-open {
    pointer-events: all;
    opacity: 1;
}

.checkout-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--order-panel-backdrop);
    opacity: 0;
    transition: opacity var(--order-panel-dur) var(--order-panel-ease);
}

.checkout-layer.is-open .checkout-backdrop {
    opacity: 1;
}

.checkout-dialog {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--order-panel-surface);
    box-shadow: var(--order-panel-shadow);
    display: flex;
    flex-direction: column;
    transform: translate3d(0, 100%, 0);
    transition: transform var(--order-panel-dur) var(--order-panel-ease);
    outline: none;
    overflow: hidden;
}

.checkout-layer.is-open .checkout-dialog {
    transform: translate3d(0, 0, 0);
}

.checkout-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.checkout-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid rgba(15, 23, 42, 0.10);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.checkout-title {
    font-size: var(--fs-4);
    font-weight: 900;
    color: var(--text-900);
    margin: 0;
}

.checkout-close {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: transparent;
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--text-700);
    display: grid;
    place-items: center;
    transition: background var(--dur-2) var(--ease-out), transform var(--dur-1) var(--ease-out);
}

.checkout-close:hover {
    background: rgba(11, 58, 91, 0.06);
}

.checkout-close:active {
    transform: translateY(1px);
}

.checkout-body {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.checkout-order-info,
.checkout-items,
.checkout-summary,
.checkout-coupon-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkout-section-title {
    font-size: var(--fs-2);
    font-weight: 900;
    color: var(--text-900);
    margin: 0 0 8px 0;
}

.checkout-order-row,
.checkout-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
}

.checkout-label {
    color: var(--text-700);
    font-weight: 700;
    font-size: var(--fs-1);
}

.checkout-value {
    color: var(--text-900);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.checkout-value--total {
    font-size: var(--fs-3);
    font-weight: 900;
}

.checkout-summary-row--total {
    margin-top: 8px;
    padding-top: 16px;
    border-top: 2px solid rgba(15, 23, 42, 0.18);
}

.checkout-divider {
    height: 1px;
    background: rgba(15, 23, 42, 0.10);
    margin: 4px 0;
}

.checkout-item {
    padding: 16px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 14px;
    background: rgba(246, 248, 251, 0.5);
}

.checkout-item-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.checkout-item-name {
    font-weight: 900;
    font-size: var(--fs-2);
    color: var(--text-900);
}

.checkout-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.checkout-item-qty {
    color: var(--text-700);
    font-weight: 700;
    font-size: var(--fs-1);
}

.checkout-item-price {
    color: var(--text-900);
    font-weight: 900;
    font-size: var(--fs-2);
    font-variant-numeric: tabular-nums;
}

.checkout-footer {
    padding: 20px;
    border-top: 1px solid rgba(15, 23, 42, 0.10);
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}

.checkout-primary-btn {
    width: 100%;
    height: 52px;
    border-radius: var(--radius-md);
    border: 0;
    background: var(--color-brand);
    color: var(--white);
    font-weight: 600;
    font-size: var(--fs-2);
    font-family: var(--font-body);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: background var(--dur-2) var(--ease-in-out), transform var(--dur-1) var(--ease-in-out), box-shadow var(--dur-2) var(--ease-in-out), opacity var(--dur-2) var(--ease-in-out);
}

.checkout-primary-btn:hover:not(:disabled) {
    background: var(--color-brand-2);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.checkout-primary-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

.checkout-primary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.checkout-note {
    margin: 0;
    color: var(--text-500);
    font-size: var(--fs-0);
    text-align: center;
}

@media (min-width: 769px) {
    .checkout-dialog {
        top: 50%;
        left: 50%;
        right: auto;
        bottom: auto;
        width: min(90vw, 600px);
        max-width: 600px;
        max-height: calc(100vh - 48px);
        height: auto;
        border-radius: 16px;
        transform: translate3d(-50%, -50%, 0) scale(0.96) translate3d(0, 10px, 0);
    }

    .checkout-layer.is-open .checkout-dialog {
        transform: translate3d(-50%, -50%, 0) scale(1) translate3d(0, 0, 0);
    }

    .checkout-body {
        max-height: calc(100vh - 200px);
    }
}

/* Mini Laptop adjustments for checkout */
@media (min-width: 1024px) and (max-width: 1366px) {
    .checkout-dialog {
        width: min(85vw, 560px);
        max-width: 560px;
    }
}

/* Mobile mini-cart */
.order-mini-cart {
    position: fixed;
    left: 14px;
    bottom: 14px;
    z-index: 3600;
    width: 54px;
    height: 54px;
    border-radius: 999px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 16px 34px rgba(2, 6, 23, 0.18), 0 8px 18px rgba(2, 6, 23, 0.10);
    display: grid;
    place-items: center;
    cursor: pointer;
}

.order-mini-cart__icon {
    color: rgba(11, 58, 91, 0.98);
}

.order-mini-cart__dot {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: rgba(16, 185, 129, 1);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.95);
    opacity: 0;
    transform: scale(0.9);
    transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}

.order-mini-cart__dot.is-active {
    opacity: 1;
    transform: scale(1);
}

@media (min-width: 769px) {
    .order-mini-cart {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .order-sidecard {
        width: 100vw;
        transform: translate3d(-100%, 0, 0);
        box-shadow: 18px 0 60px rgba(2, 6, 23, 0.24);
        border-radius: 0;
    }
}

@media (min-width: 769px) {
    .order-form__grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px 16px;
    }

    .order-field--full {
        grid-column: 1 / -1;
    }

    .order-type-cards {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
}

@media (min-width: 769px) {
    .order-panel-dialog {
        top: 50%;
        left: 50%;
        right: auto;
        bottom: auto;
        height: auto;
        width: min(90vw, 600px);
        max-width: 600px;
        max-height: calc(100vh - 48px);
        border-radius: 16px;
        box-shadow: 0 18px 60px rgba(2, 6, 23, 0.28);
        transform: translate3d(-50%, -50%, 0) scale(0.96) translate3d(0, 10px, 0);
    }

    .order-panel-layer.is-open .order-panel-dialog {
        transform: translate3d(-50%, -50%, 0) scale(1) translate3d(0, 0, 0);
    }

    .order-panel-content {
        padding: 28px 28px 32px;
        max-height: calc(100vh - 48px);
    }
}

@media (min-width: 1200px) {
    .order-panel-dialog {
        max-width: 600px;
    }
}

/* ============================================
   SITE-WIDE NOTIFICATION BANNER
   ============================================ */
.site-notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate3d(-50%, -50%, 0) translate3d(0, -20px, 0);
    z-index: 10000;
    width: auto;
    max-width: min(90vw, 500px);
    background: #FF8A00;
    color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px rgba(255, 138, 0, 0.3), 0 2px 8px rgba(0, 0, 0, 0.15);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-2) var(--ease-out);
    will-change: transform, opacity;
}

.site-notification.is-visible {
    transform: translate3d(-50%, -50%, 0) translate3d(0, 0, 0);
    opacity: 1;
    pointer-events: auto;
}

.site-notification.is-closing {
    transform: translate3d(-50%, -50%, 0) translate3d(0, -20px, 0);
    opacity: 0;
    pointer-events: none;
}

.site-notification__content {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px 20px;
    max-width: 100%;
}

.site-notification__text {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--fs-1);
    font-weight: 600;
    color: var(--white);
    line-height: 1.5;
    text-align: center;
    word-wrap: break-word;
}

@media (prefers-reduced-motion: no-preference) {
    .site-notification.is-visible {
        animation: notificationFadeIn 600ms var(--ease-out) both;
    }

    @keyframes notificationFadeIn {
        from {
            transform: translate3d(-50%, -50%, 0) translate3d(0, -30px, 0);
            opacity: 0;
        }
        to {
            transform: translate3d(-50%, -50%, 0) translate3d(0, 0, 0);
            opacity: 1;
        }
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-notification {
        transition: none;
    }

    .site-notification.is-visible {
        animation: none;
        transform: translate3d(-50%, -50%, 0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .site-notification {
        max-width: calc(100vw - 32px);
        top: 20%;
    }

    .site-notification__content {
        padding: 14px 18px;
    }

    .site-notification__text {
        font-size: var(--fs-0);
    }
}

/* ============================================
   1. NAVBAR / HEADER
   ============================================ */
.navbar {
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06), 0 10px 30px rgba(2, 6, 23, 0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 4px 0;
}

@supports ((-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))) {
    .navbar {
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
    }
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    background: none;
}

.logo img {
    height: 130px;
    width: auto;
    background: transparent;
    display: block;
    object-fit: contain;
    mix-blend-mode: darken;
    filter: contrast(1.1) brightness(1.05);
}

.logo-text {
    display: block;
    text-align: center;
    justify-content: center;
    align-items: center;
    margin-right: 30px;

    margin-top: 20px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--secondary-color);
    letter-spacing: -0.01em;
    white-space: nowrap;
}

/* Desktop Menu Styles */
.desktop-menu {
    display: flex;
    position: static;
    width: auto;
    height: auto;
    background: none;
    box-shadow: none;
    padding: 0;
    opacity: 1;
    transform: none;
    pointer-events: all;
    overflow: visible;
    margin-left: auto;
    z-index: auto;
}

.desktop-menu ul {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
    opacity: 1;
    transform: none;
}

.desktop-menu ul li {
    width: auto;
    margin: 0;
    opacity: 1;
    transform: none;
}

.desktop-menu a {
    text-decoration: none;
    color: var(--text-700);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color var(--dur-2) var(--ease-out);
    padding: 0;
    border-radius: 0;
    border-left: none;
    position: relative;
    overflow: visible;
}

.desktop-menu a:hover {
    color: var(--primary-color);
}

@media (min-width: 769px) {
    .desktop-menu a::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: -6px;
        height: 2px;
        border-radius: 999px;
        background: var(--primary-color);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform var(--dur-2) var(--ease-out);
        opacity: 0.9;
    }

    .desktop-menu a:hover::after {
        transform: scaleX(1);
    }
}

/* Hide desktop menu on mobile */
@media (max-width: 768px) {
    .desktop-menu {
        display: none !important;
    }
}

/* Hide mobile menu backdrop on desktop */
@media (min-width: 769px) {
    .mobile-menu-backdrop {
        display: none !important;
    }
}

.nav-actions {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-left: 14px;
}

.nav-cart-btn {
    height: 44px;
    min-width: 44px;
    padding: 0 14px;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border);
    background: var(--white);
    color: var(--text-900);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    position: relative;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: background var(--dur-2) var(--ease-in-out), transform var(--dur-1) var(--ease-in-out), border-color var(--dur-2) var(--ease-in-out), box-shadow var(--dur-2) var(--ease-in-out);
}

.nav-cart-btn:hover {
    background: var(--bg-1);
    border-color: var(--color-brand);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.nav-cart-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.nav-cart-btn__icon {
    color: rgba(11, 58, 91, 0.98);
}

.nav-cart-btn__text {
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--text-900);
}

.nav-cart-btn__dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-accent);
    border: 2px solid var(--white);
    box-shadow: 0 1px 3px rgba(255, 138, 0, 0.4);
    opacity: 0;
    transform: scale(0.8);
    transition: opacity var(--dur-2) var(--ease-in-out), transform var(--dur-2) var(--ease-in-out);
}

.nav-cart-btn__dot.is-active {
    opacity: 1;
    transform: scale(1);
}

@media (max-width: 768px) {
    .nav-cart-btn {
        display: none !important;
    }
}
/* Hide mobile menu on desktop */
@media (min-width: 769px) {
    .nav-menu {
        display: none !important;
    }
    
    .mobile-menu-backdrop {
        display: none !important;
    }
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
    opacity: 1;
    transform: none;
}

.nav-menu ul li {
    width: auto;
    margin: 0;
    opacity: 1;
    transform: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-700);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color var(--dur-2) var(--ease-out);
    padding: 0;
    border-radius: 0;
    border-left: none;
    position: relative;
    overflow: visible;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::before {
    display: none;
}

@media (min-width: 769px) {
    .nav-menu a::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: -6px;
        height: 2px;
        border-radius: 999px;
        background: var(--primary-color);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform var(--dur-2) var(--ease-out);
        opacity: 0.9;
    }

    .nav-menu a:hover::after {
        transform: scaleX(1);
    }
}

.mobile-menu-close {
    display: none;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 6px;
    padding: 8px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    -webkit-tap-highlight-color: transparent;
    outline: none;
    position: relative;
    justify-content: center;
    align-items: center;
}

.mobile-menu-toggle:hover {
    transform: scale(1.05);
}

.mobile-menu-toggle:active {
    transform: scale(0.95);
}

.mobile-menu-toggle:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    border-radius: 4px;
}

.mobile-menu-toggle.active {
    transform: rotate(180deg) scale(1.05);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px) scaleX(1.1);
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
    width: 25px;
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
    width: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px) scaleX(1.1);
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
    width: 25px;
}

.mobile-menu-toggle span {
    width: 28px;
    height: 3px;
    background-color: var(--text-dark);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: center;
    display: block;
    border-radius: 3px;
    position: relative;
    will-change: transform, opacity, background-color, width;
}

.mobile-menu-toggle span::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 3px;
}

.mobile-menu-toggle:hover span::before {
    opacity: 1;
}

.mobile-menu-toggle.active span::before {
    opacity: 0;
}

/* ============================================
   2. HERO SECTION
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--color-brand-2) 100%);
    color: var(--white);
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    inset: -200px -200px auto -200px;
    height: 520px;
    background: radial-gradient(closest-side, rgba(208, 138, 10, 0.18), rgba(208, 138, 10, 0) 70%);
    pointer-events: none;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(2, 6, 23, 0.18), rgba(2, 6, 23, 0) 40%);
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.1rem, 3.2vw + 1rem, 3.2rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 0.9vw + 0.9rem, 1.35rem);
    margin-bottom: 40px;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.86);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.95rem 1.6rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 650;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    transition: transform var(--dur-2) var(--ease-out),
                box-shadow var(--dur-2) var(--ease-out),
                background-color var(--dur-2) var(--ease-out),
                border-color var(--dur-2) var(--ease-out),
                color var(--dur-2) var(--ease-out);
    border: none;
    cursor: pointer;
    text-align: center;
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(11, 58, 91, 0.22);
}

.whatsapp-fab {
    --wa-green: #25D366;
    --wa-green-2: #1FC85E;

    position: fixed;
    right: 18px;
    bottom: 18px;
    padding: 14px;
    aspect-ratio: 1 / 1;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;

    background: linear-gradient(180deg, var(--wa-green), var(--wa-green-2));
    color: #FFFFFF;
    border: 1px solid rgba(15, 23, 42, 0.08);

    box-shadow:
        0 10px 22px rgba(2, 6, 23, 0.14),
        0 4px 10px rgba(2, 6, 23, 0.10);

    z-index: 9000; /* above content, below the mobile menu (9999) */

    cursor: pointer;
    text-decoration: none;
    transform: translate3d(0, 0, 0);
    transition: all 0.28s ease-in-out;
    -webkit-tap-highlight-color: transparent;
}

.whatsapp-fab {
    right: calc(18px + env(safe-area-inset-right));
    bottom: calc(18px + env(safe-area-inset-bottom));
}

.whatsapp-fab:hover {
    transform: translate3d(0, -2px, 0) scale(1.03);
    box-shadow:
        0 14px 28px rgba(2, 6, 23, 0.16),
        0 6px 14px rgba(2, 6, 23, 0.12);
}

.whatsapp-fab:active {
    transform: translate3d(0, 0, 0) scale(0.99);
}

.whatsapp-fab:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.95);
    outline-offset: 4px;
}

.whatsapp-fab__icon {
    width: 24px;
    height: 24px;
    color: #FFFFFF;
}

@keyframes waFabIn {
    from {
        opacity: 0;
        transform: translate3d(0, 10px, 0) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
    }
}

@media (prefers-reduced-motion: no-preference) {
    .whatsapp-fab {
        animation: waFabIn 520ms var(--ease-out) both;
        will-change: transform, opacity;
    }
}

@media (max-width: 480px) {
    .whatsapp-fab {
        padding: 13px;
        right: 14px;
        bottom: 14px;
        right: calc(14px + env(safe-area-inset-right));
        bottom: calc(14px + env(safe-area-inset-bottom));
    }

    .whatsapp-fab__icon {
        width: 24px;
        height: 24px;
    }
}

/* Mobile-First CTA Bar */
.mobile-cta-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 8999;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.95) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    padding: 0.75rem 1rem;
    padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
    gap: 0.75rem;
}

.mobile-cta {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: var(--fs-1);
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 48px;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.mobile-cta--call {
    background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-2) 100%);
    color: white;
}

.mobile-cta--call:hover,
.mobile-cta--call:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(11, 74, 166, 0.3);
}

.mobile-cta--whatsapp {
    background: linear-gradient(135deg, #25D366 0%, #1FC85E 100%);
    color: white;
}

.mobile-cta--whatsapp:hover,
.mobile-cta--whatsapp:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.mobile-cta svg {
    flex-shrink: 0;
}

/* WhatsApp FAB visible on all screen sizes */
.whatsapp-fab {
    display: inline-flex !important;
}

/* FAQ Section */
.faq {
    padding: 80px 20px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--bg-0);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.faq-question {
    padding: 1.25rem 1.5rem;
    margin: 0;
    font-size: var(--fs-2);
    font-weight: 700;
    color: var(--text-900);
    cursor: pointer;
    position: relative;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-brand);
    flex-shrink: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 1.5rem 1.25rem;
}

.faq-answer p {
    color: var(--text-700);
    line-height: 1.7;
    margin: 0;
    padding-top: 0.5rem;
}

.faq-answer a {
    color: var(--color-brand);
    text-decoration: none;
    font-weight: 600;
}

.faq-answer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .faq {
        padding: 3rem 1rem;
    }

    .faq-question {
        padding: 1rem 1.25rem;
        font-size: var(--fs-1);
    }

    .faq-answer {
        padding: 0 1.25rem;
    }

    .faq-item.active .faq-answer {
        padding: 0 1.25rem 1rem;
    }
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-900);
    box-shadow: 0 10px 24px rgba(2, 6, 23, 0.16);
}

.btn-primary:hover {
    background-color: var(--color-accent-2);
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary-color);
    border: 1.5px solid rgba(11, 58, 91, 0.35);
}

.btn-secondary:hover {
    background-color: rgba(11, 58, 91, 0.06);
    border-color: rgba(11, 58, 91, 0.55);
}

.hero .btn-secondary {
    color: rgba(255, 255, 255, 0.92);
    border-color: rgba(255, 255, 255, 0.7);
}

.hero .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.85);
    color: var(--white);
}

/* Call button content - keep icon and number on one line */
.call-btn-content {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.call-icon {
    flex-shrink: 0;
}

.call-text {
    white-space: nowrap;
}

.call-number {
    white-space: nowrap;
    font-weight: 700;
}

/* ============================================
   3. COMPANY OVERVIEW SECTION
   ============================================ */
.about {
    padding: 80px 20px;
    background-color: var(--bg-light);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text h2 {
    font-size: clamp(1.6rem, 1.4vw + 1.2rem, 2.05rem);
    color: var(--secondary-color);
    margin-bottom: 25px;
    text-align: center;
    font-weight: 800;
}

.about-text p {
    font-size: var(--fs-2);
    line-height: 1.85;
    color: var(--text-light);
    margin-bottom: 20px;
    text-align: center;
}

/* ============================================
   4. SERVICES SECTION
   ============================================ */
.services {
    padding: 80px 20px;
    background-color: var(--white);
}

.section-title {
    font-size: clamp(1.85rem, 2.2vw + 1rem, 2.4rem);
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 50px;
    font-weight: 800;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.service-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(208, 138, 10, 0.25);
}

.service-icon img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin-bottom: 20px;
    object-fit: cover;
    box-shadow: 0 10px 28px rgba(2, 6, 23, 0.16);
    border: 3px solid rgba(255, 255, 255, 0.7);
}

.service-card h3 {
    font-size: var(--fs-4);
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: 750;
}

.service-card > p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.75;
}

.service-features {
    list-style: none;
    text-align: left;
    margin-top: 20px;
}

.service-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--text-dark);
}

.service-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* ============================================
   5. PRODUCT CATEGORIES SECTION
   ============================================ */
.products {
    padding: 80px 20px;
    background-color: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.product-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: transform var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out);
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 100%;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(208, 138, 10, 0.25);
}

.product-image {
    width: 100%;
    overflow: hidden;
    background: var(--bg-light);
}

.product-image img {
    width: 100%;
    height: auto;
    min-height: 200px;
    max-height: 300px;
    object-fit: contain;
    object-position: center;
    filter: saturate(0.95) contrast(1.02);
    display: block;
}

.product-card h3 {
    font-size: var(--fs-3);
    color: var(--secondary-color);
    margin: 20px 20px 10px;
    font-weight: 750;
    line-height: 1.3;
}

.product-card p {
    color: var(--text-light);
    margin: 0 20px 20px;
    line-height: 1.75;
    font-size: 0.95rem;
}

.product-card__actions {
    display: flex;
    gap: 12px;
    padding: 0 20px 20px;
    margin-top: auto;
    flex-wrap: wrap;
}

.product-card__actions .btn {
    flex: 1;
    min-width: 120px;
    white-space: nowrap;
}

/* ============================================
   OUT OF STOCK PRODUCT STYLING
   ============================================ */
.product-card--out-of-stock {
    position: relative;
    opacity: 0.7;
    filter: grayscale(0.3);
    pointer-events: auto; /* Allow clicking for view details */
}

.product-card--out-of-stock .product-image img {
    filter: grayscale(100%);
    opacity: 0.6;
}

.product-out-of-stock-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #dc2626;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.product-card--out-of-stock .product-card__actions .btn {
    opacity: 0.6;
    cursor: not-allowed;
}

.product-card--out-of-stock .product-card__actions .btn:disabled {
    background: #9ca3af;
    border-color: #9ca3af;
    color: white;
}

.btn--disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
    pointer-events: none;
}

/* ============================================
   REFILLING PRODUCT CARD LAYOUT (Side-by-side)
   ============================================ */
.product-card--refilling {
    padding: 0;
}

.product-card--refilling .product-card__top {
    display: flex;
    gap: 20px;
    padding: 20px;
    align-items: flex-start;
}

.product-card--refilling .product-image {
    flex: 0 0 200px;
    width: 200px;
    height: 200px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card--refilling .product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.95) contrast(1.02);
}

.product-card--refilling .product-card__content {
    flex: 1;
    min-width: 0;
}

.product-card--refilling .product-card__content h3 {
    margin: 0 0 12px 0;
    font-size: var(--fs-3);
    color: var(--secondary-color);
    font-weight: 750;
}

.product-card--refilling .product-card__content p {
    margin: 0;
    color: var(--text-light);
    line-height: 1.75;
}

/* Mobile: Stack image and content vertically */
@media (max-width: 768px) {
    .product-card--refilling .product-card__top {
        flex-direction: column;
        gap: 16px;
    }

    .product-card--refilling .product-image {
        flex: 0 0 auto;
        width: 100%;
        max-width: 250px;
        height: 180px;
        margin: 0 auto;
    }

    .product-card--refilling .product-card__content {
        width: 100%;
    }
}

/* ============================================
   6. GAS CYLINDER REFILLING DETAIL SECTION
   ============================================ */
.refilling {
    padding: 80px 20px;
    background-color: var(--white);
}

.refilling-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.refilling-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.refilling-text h2 {
    font-size: clamp(1.55rem, 1.4vw + 1.1rem, 2.05rem);
    color: var(--secondary-color);
    margin-bottom: 25px;
    font-weight: 800;
}

.refilling-text p {
    font-size: var(--fs-2);
    line-height: 1.85;
    color: var(--text-light);
    margin-bottom: 20px;
}

.refilling-features {
    list-style: none;
    margin: 25px 0;
}

.refilling-features li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-dark);
    font-size: 1.05rem;
}

.refilling-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.3rem;
}

/* ============================================
   7. CONTACT + MESSAGE SECTION
   ============================================ */
.contact {
    padding: 80px 20px;
    background-color: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info h3,
.contact-form h3 {
    font-size: clamp(1.35rem, 1vw + 1.1rem, 1.7rem);
    color: var(--secondary-color);
    margin-bottom: 30px;
    font-weight: 800;
}

.contact-item {
    margin-bottom: 25px;
}

.contact-item strong {
    display: block;
    color: var(--secondary-color);
    font-size: 1rem;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.contact-item p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.6;
}

.message-form {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1.5px solid rgba(15, 23, 42, 0.16);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    background-color: rgba(255, 255, 255, 0.92);
    transition: border-color var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out), background-color var(--dur-2) var(--ease-out);
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(11, 58, 91, 0.16);
    background-color: var(--white);
}

.form-group input:focus-visible,
.form-group textarea:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.success-message {
    margin-top: 20px;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #065f46;
    border: 1px solid #6ee7b7;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.15);
    animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.error-message {
    margin-top: 20px;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    border: 1px solid #fca5a5;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.15);
    animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.contact-item a {
    color: var(--color-brand);
    text-decoration: none;
    transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-item a:hover {
    color: var(--color-brand-2);
    text-decoration: underline;
}

/* ============================================
   8. FOOTER
   ============================================ */
.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 50px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo img {
    height: 150px;
    width: auto;
    margin-bottom: 15px;
    filter: brightness(0) invert(1);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--white);
    font-weight: 750;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--dur-2) var(--ease-out);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 0, 0, 0);
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   MOBILE RESPONSIVE STYLES
   ============================================ */
@media (max-width: 768px) {
    .navbar {
        padding: 2px 0;
    }

    .logo img {
        height: 165px;
    }

    .logo-text {
        font-size: 1rem;
        margin-right: 12px;
    }

    .nav-wrapper {
        padding: 0 1rem;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Mobile: Menu hidden by default */
    .nav-menu.hidden {
        display: none !important;
    }

    /* Mobile Menu Backdrop - Must be outside navbar */
    .mobile-menu-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.6);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        z-index: 9998;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        display: block;
    }

    .mobile-menu-backdrop.hidden {
        display: none;
    }

    .mobile-menu-backdrop:not(.hidden) {
        display: block;
        opacity: 1;
        pointer-events: all;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 85vw;
        max-width: 400px;
        height: 100vh;
        height: 100dvh; /* Dynamic viewport height for mobile */
        background-color: var(--white);
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
        padding: 0;
        opacity: 0;
        transform: translate3d(100%, 0, 0);
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                    opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        pointer-events: none;
        z-index: 9999;
        overflow-y: auto;
        overflow-x: hidden;
        will-change: transform, opacity;
        -webkit-overflow-scrolling: touch;
        display: block;
    }

    .nav-menu.hidden {
        display: none;
    }

    .nav-menu:not(.hidden) {
        display: block;
        opacity: 1;
        transform: translate3d(0, 0, 0);
        pointer-events: all;
    }

    /* Prevent body scroll when menu is open */
    body.mobile-menu-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
    }

    .mobile-menu-close {
        position: absolute;
        top: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(0, 0, 0, 0.04);
        border: none;
        border-radius: 50%;
        cursor: pointer;
        color: var(--text-dark);
        opacity: 0;
        transform: scale(0.8) rotate(-90deg);
        transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1) 0.15s,
                    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1) 0.15s,
                    background 0.2s ease;
        z-index: 10001;
        will-change: transform, opacity;
    }

    .nav-menu:not(.hidden) .mobile-menu-close {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }

    .mobile-menu-close:hover {
        background: rgba(208, 138, 10, 0.12);
        color: var(--primary-color);
        transform: scale(1.1) rotate(90deg);
    }

    .mobile-menu-close:active {
        transform: scale(0.95) rotate(90deg);
    }

    .mobile-menu-close svg {
        width: 20px;
        height: 20px;
    }

    .nav-menu ul {
        flex-direction: column;
        gap: 4px;
        list-style: none;
        margin: 0;
        padding: 80px 20px 40px;
        opacity: 0;
        transform: translate3d(20px, 0, 0);
        transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1) 0.1s,
                    transform 0.35s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
        will-change: transform, opacity;
        height: 100%;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu:not(.hidden) ul {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    .nav-menu ul li {
        width: 100%;
        margin: 0;
        opacity: 0;
        transform: translate3d(15px, 0, 0);
        transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        will-change: transform, opacity;
    }

    .nav-menu:not(.hidden) ul li:nth-child(1) {
        transition-delay: 0.18s;
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    .nav-menu:not(.hidden) ul li:nth-child(2) {
        transition-delay: 0.22s;
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    .nav-menu:not(.hidden) ul li:nth-child(3) {
        transition-delay: 0.26s;
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    .nav-menu:not(.hidden) ul li:nth-child(4) {
        transition-delay: 0.3s;
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    .nav-menu:not(.hidden) ul li:nth-child(5) {
        transition-delay: 0.34s;
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }

    .nav-menu ul li a {
        display: block;
        padding: 16px 20px;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-900);
        text-decoration: none;
        border-radius: 10px;
        transition: transform var(--dur-2) var(--ease-out),
                    box-shadow var(--dur-2) var(--ease-out),
                    background-color var(--dur-2) var(--ease-out),
                    border-color var(--dur-2) var(--ease-out),
                    color var(--dur-2) var(--ease-out);
        border-left: 4px solid transparent;
        position: relative;
        overflow: hidden;
        -webkit-tap-highlight-color: transparent;
        outline: none;
        min-height: 52px;
        display: flex;
        align-items: center;
    }

    .nav-menu ul li a:focus-visible {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }

    .nav-menu ul li a:focus-visible {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }

    .nav-menu ul li a::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(208, 138, 10, 0.12), transparent);
        transition: left 0.5s ease;
    }

    .nav-menu ul li a:hover::before {
        left: 100%;
    }

    .nav-menu ul li a:hover {
        background-color: rgba(208, 138, 10, 0.12);
        color: var(--primary-color);
        border-left-color: var(--primary-color);
        transform: translateX(8px);
        box-shadow: 0 10px 20px rgba(2, 6, 23, 0.12);
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .hero {
        padding: 60px 20px;
    }

    .hero-title {
        font-size: clamp(1.95rem, 4.3vw + 0.9rem, 2.5rem);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-text h2,
    .refilling-text h2 {
        font-size: 1.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 0 16px;
    }
    
    .product-card {
        max-width: 100%;
    }
    
    .product-image img {
        min-height: 180px;
        max-height: 220px;
    }
    
    .product-card h3 {
        font-size: 1.25rem;
        margin: 16px 16px 8px;
    }
    
    .product-card p {
        margin: 0 16px 16px;
        font-size: 0.9rem;
    }
    
    .product-card__actions {
        padding: 0 16px 16px;
        flex-direction: column;
        gap: 10px;
    }
    
    .product-card__actions .btn {
        width: 100%;
        min-width: unset;
    }

    .refilling-content {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-info,
    .contact-form {
        width: 100%;
    }

    .message-form {
        padding: 1.5rem;
    }

    .contact-item {
        margin-bottom: 1.5rem;
    }

    .contact-item a {
        word-break: break-all;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer {
        padding: 3rem 1.25rem 1.5rem;
    }

    .footer-logo img {
        height: 120px;
    }

    .footer-section {
        margin-bottom: 1.5rem;
    }

    .footer-section h4 {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .footer-section ul li {
        margin-bottom: 0.75rem;
    }

    .footer-section ul li a {
        font-size: 0.9rem;
    }

    .footer-bottom {
        padding-top: 1.5rem;
        font-size: 0.875rem;
    }
}

/* Mini Laptop / Small Desktop (1024px - 1366px) */
@media (min-width: 1024px) and (max-width: 1366px) {
    .container {
        max-width: 1200px;
        padding: 0 2rem;
    }

    .navbar {
        padding: 4px 0;
    }

    .logo img {
        height: 110px;
    }

    .logo-text {
        font-size: 1.15rem;
        margin-right: 20px;
    }

    .nav-wrapper {
        padding: 0 1.5rem;
    }

    .desktop-menu ul {
        gap: 24px;
    }

    .desktop-menu a {
        font-size: 0.9rem;
    }

    .hero {
        padding: 80px 2rem;
    }

    .hero-title {
        font-size: clamp(2rem, 2.5vw + 1.2rem, 2.3rem);
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
        max-width: 900px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        padding: 0 20px;
        max-width: 900px;
    }

    .service-card {
        padding: 32px 24px;
    }

    .product-card {
        padding: 0;
    }
    
    .product-image img {
        min-height: 200px;
        max-height: 250px;
    }
    
    .product-card h3 {
        font-size: 1.35rem;
        margin: 20px 20px 10px;
    }
    
    .product-card p {
        margin: 0 20px 20px;
        font-size: 0.95rem;
    }
    
    .product-card__actions {
        padding: 0 20px 20px;
        gap: 12px;
    }
    
    .product-card__actions .btn {
        flex: 1;
        min-width: 140px;
    }

    .refilling-content {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .order-sidecard {
        width: min(360px, 35vw);
    }

    .checkout-dialog {
        width: min(85vw, 560px);
    }

    .product-detail-container {
        max-width: 1200px;
        padding: 20px;
        gap: 20px;
    }
}

/* Tablet / Large Mobile (769px - 1023px) */
@media (min-width: 769px) and (max-width: 1023px) {
    .container {
        padding: 0 1.5rem;
    }

    .logo img {
        height: 100px;
    }

    .logo-text {
        font-size: 1rem;
        margin-right: 16px;
    }

    .desktop-menu ul {
        gap: 20px;
    }

    .desktop-menu a {
        font-size: 0.875rem;
    }

    .hero {
        padding: 60px 1.5rem;
    }

    .hero-title {
        font-size: clamp(1.8rem, 3vw + 1rem, 2.1rem);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        padding: 0 16px;
    }
    
    .product-image img {
        min-height: 180px;
        max-height: 220px;
    }
    
    .product-card h3 {
        font-size: 1.2rem;
        margin: 18px 18px 10px;
    }
    
    .product-card p {
        margin: 0 18px 18px;
        font-size: 0.9rem;
    }
    
    .product-card__actions {
        padding: 0 18px 18px;
        gap: 10px;
    }
    
    .product-card__actions .btn {
        flex: 1;
        min-width: 120px;
        font-size: 0.9rem;
        padding: 0.75rem 1rem;
    }

    .refilling-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .refilling-image {
        order: -1;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .order-sidecard {
        width: min(340px, 40vw);
    }

    .product-detail-container {
        grid-template-columns: 1fr;
        max-height: 95vh;
    }

    .product-detail-panel--right {
        order: -1;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 135px;
    }

    .logo-text {
        font-size: 0.85rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .message-form {
        padding: 1.25rem;
    }

    .contact {
        padding: 3rem 1rem;
    }

    .contact-info h3,
    .contact-form h3 {
        font-size: 1.35rem;
        margin-bottom: 1.5rem;
    }

    .contact-item {
        margin-bottom: 1.25rem;
    }

    .contact-item p {
        font-size: 0.95rem;
    }

    .form-group {
        margin-bottom: 1.25rem;
    }

    .form-group input,
    .form-group textarea {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.875rem 1rem;
        min-height: 48px; /* Touch target size */
    }

    .form-group textarea {
        min-height: 120px;
    }

    .success-message,
    .error-message {
        padding: 0.875rem 1rem;
        font-size: 0.9rem;
    }

    .order-sidecard {
        width: 100vw;
        max-width: 100vw;
        border-radius: 0;
    }

    .product-detail-container {
        grid-template-columns: 1fr;
        padding: 16px;
        gap: 16px;
    }

    /* Better spacing for very small screens */
    .hero-buttons {
        gap: 12px;
    }

    .hero-buttons .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }

    /* Ensure call button icon and number stay on one line on mobile */
    .btn-secondary .call-btn-content {
        white-space: nowrap;
        display: inline-flex;
        align-items: center;
    }

    .btn-secondary .call-icon,
    .btn-secondary .call-text,
    .btn-secondary .call-number {
        white-space: nowrap;
        flex-shrink: 0;
    }

    /* Improved product cards on small screens */
    .products-grid {
        gap: 20px;
        padding: 0 12px;
    }
    
    .product-card {
        padding: 0;
    }
    
    .product-image img {
        min-height: 160px;
        max-height: 200px;
    }
    
    .product-card h3 {
        font-size: 1.1rem;
        margin: 14px 14px 8px;
    }
    
    .product-card p {
        margin: 0 14px 14px;
        font-size: 0.85rem;
        line-height: 1.6;
    }

    .product-card__actions {
        padding: 0 14px 14px;
        gap: 8px;
        flex-direction: column;
    }
    
    .product-card__actions .btn {
        width: 100%;
        min-width: unset;
        font-size: 0.875rem;
        padding: 0.7rem 1rem;
    }

    /* Better service cards spacing */
    .service-card {
        padding: 24px 20px;
    }

    .service-features {
        font-size: 0.9rem;
    }
}

/* Large Desktop (1367px and above) */
@media (min-width: 1367px) {
    .container {
        max-width: 1400px;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 1200px;
        gap: 48px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
        padding: 0 20px;
        max-width: 1000px;
        justify-items: center;
    }
    
    .product-card {
        max-width: 100%;
    }
    
    .product-image img {
        min-height: 220px;
        max-height: 280px;
    }
    
    .product-card h3 {
        font-size: 1.5rem;
        margin: 24px 24px 12px;
    }
    
    .product-card p {
        margin: 0 24px 24px;
        font-size: 1rem;
    }
    
    .product-card__actions {
        padding: 0 24px 24px;
        gap: 16px;
    }
    
    .product-card__actions .btn {
        flex: 1;
        min-width: 160px;
        font-size: 1rem;
        padding: 0.875rem 1.5rem;
    }

    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }

    .order-sidecard {
        width: min(400px, 28vw);
    }

    .product-detail-container {
        max-width: 1400px;
        gap: 32px;
        padding: 32px;
    }
}

/* ============================================
   PRODUCT DETAIL PAGE (Two-Panel Layout)
   ============================================ */
.product-detail-layer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    will-change: opacity;
}

.product-detail-layer[aria-hidden="false"] {
    opacity: 1;
    pointer-events: auto;
}

.product-detail-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(31, 41, 55, 0.75);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--dur-3) var(--ease-out);
}

.product-detail-layer[aria-hidden="false"] .product-detail-backdrop {
    opacity: 1;
}

.product-detail-container {
    position: relative;
    width: 100%;
    max-width: 1400px;
    height: 100%;
    max-height: 90vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 24px;
    z-index: 1;
    overflow: hidden;
}

.product-detail-panel {
    background: var(--bg-0);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    opacity: 0;
    will-change: transform, opacity;
}

.product-detail-panel--left {
    transform: translateX(-100px);
    transition: transform 600ms var(--ease-out), opacity 600ms var(--ease-out);
}

.product-detail-panel--right {
    transform: translateX(100px);
    transition: transform 600ms var(--ease-out), opacity 600ms var(--ease-out);
}

.product-detail-layer[aria-hidden="false"] .product-detail-panel--left {
    transform: translateX(0);
    opacity: 1;
    transition-delay: 100ms;
}

.product-detail-layer[aria-hidden="false"] .product-detail-panel--right {
    transform: translateX(0);
    opacity: 1;
    transition-delay: 200ms;
}

.product-detail-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    z-index: 10;
    color: var(--text-700);
    transition: all var(--dur-2) var(--ease-out);
}

.product-detail-close:hover,
.product-detail-close:focus-visible {
    background: var(--bg-2);
    border-color: var(--text-300);
    color: var(--text-900);
    outline: 2px solid var(--color-brand);
    outline-offset: 2px;
}

.product-detail-content {
    padding: 32px;
}

.product-detail-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-1);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.product-detail-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.product-detail-title {
    font-family: var(--font-heading);
    font-size: var(--fs-5);
    font-weight: 700;
    color: var(--text-900);
    line-height: var(--line-height-tight);
    margin: 0;
}

.product-detail-description {
    font-size: var(--fs-2);
    color: var(--text-700);
    line-height: var(--line-height-relaxed);
    margin: 0;
}

.product-detail-specs {
    padding: 16px;
    background: var(--bg-1);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.product-detail-specs ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.product-detail-specs li {
    font-size: var(--fs-1);
    color: var(--text-700);
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-detail-specs li::before {
    content: "✓";
    color: var(--color-brand);
    font-weight: 700;
    font-size: var(--fs-2);
}

.product-detail-price {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 16px;
    background: var(--bg-1);
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-brand);
}

.product-detail-price-label {
    font-size: var(--fs-2);
    font-weight: 600;
    color: var(--text-700);
}

.product-detail-price-value {
    font-family: var(--font-heading);
    font-size: var(--fs-5);
    font-weight: 700;
    color: var(--color-brand);
}

.product-detail-add-cart {
    width: 100%;
    padding: 16px 24px;
    font-size: var(--fs-2);
    font-weight: 600;
    margin-top: 8px;
}

/* Order Form Panel */
.product-order-form-wrapper {
    padding: 32px;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.product-order-form-title {
    font-family: var(--font-heading);
    font-size: var(--fs-4);
    font-weight: 700;
    color: var(--text-900);
    margin: 0 0 24px 0;
}

/* Cylinder Preview Card */
.cylinder-preview-card {
    display: flex;
    gap: 20px;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    transition: box-shadow var(--dur-2) var(--ease-out);
}

.cylinder-preview-card:hover {
    box-shadow: var(--shadow-hover);
}

.cylinder-preview-card__image {
    flex-shrink: 0;
    width: 140px;
    height: 140px;
    background: var(--bg-2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 12px;
}

.cylinder-preview-card__image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.cylinder-preview-card__content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
}

.cylinder-preview-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-3);
    font-weight: 700;
    color: var(--text-900);
    margin: 0;
    line-height: var(--line-height-tight);
}

.cylinder-preview-card__description {
    font-size: var(--fs-1);
    color: var(--text-700);
    line-height: var(--line-height-relaxed);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.cylinder-preview-card__price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-2);
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-brand);
    margin-top: auto;
}

.cylinder-preview-card__price-label {
    font-size: var(--fs-1);
    font-weight: 600;
    color: var(--text-700);
}

.cylinder-preview-card__price-value {
    font-family: var(--font-heading);
    font-size: var(--fs-3);
    font-weight: 700;
    color: var(--color-brand);
}

.cylinder-preview-card__add-btn {
    width: 100%;
    padding: 12px 20px;
    font-size: var(--fs-1);
    font-weight: 600;
    margin-top: 8px;
}

.product-order-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 12px;
    padding-bottom: 8px;
}

.product-order-form::-webkit-scrollbar {
    width: 6px;
}

.product-order-form::-webkit-scrollbar-track {
    background: var(--bg-1);
    border-radius: 3px;
}

.product-order-form::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.product-order-form::-webkit-scrollbar-thumb:hover {
    background: var(--text-300);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: var(--fs-1);
    font-weight: 600;
    color: var(--text-900);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--fs-1);
    font-family: var(--font-body);
    color: var(--text-900);
    background: var(--bg-0);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all var(--dur-2) var(--ease-out);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-brand);
    box-shadow: 0 0 0 3px rgba(11, 74, 166, 0.1);
}

.form-input--readonly {
    background: var(--bg-1);
    color: var(--text-500);
    cursor: not-allowed;
}

.quantity-stepper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.quantity-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: var(--fs-3);
    font-weight: 600;
    color: var(--text-700);
    cursor: pointer;
    transition: all var(--dur-2) var(--ease-out);
}

.quantity-btn:hover:not(:disabled),
.quantity-btn:focus-visible:not(:disabled) {
    background: var(--color-brand);
    border-color: var(--color-brand);
    color: var(--white);
    outline: none;
}

.quantity-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quantity-input {
    flex: 1;
    text-align: center;
    font-weight: 600;
}

/* Coupon Wrapper */
.product-coupon-wrapper {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.product-coupon-input {
    flex: 1;
}

.product-coupon-btn {
    padding: 12px 20px;
    white-space: nowrap;
    min-width: 80px;
}

.form-error {
    font-size: var(--fs-0);
    color: #DC2626;
    margin-top: 4px;
    min-height: 20px;
}

.product-order-price-summary {
    margin-top: 8px;
    padding: 20px;
    background: var(--bg-1);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.price-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--fs-1);
    color: var(--text-700);
}

.price-summary-row--discount {
    color: var(--color-accent);
    font-weight: 600;
}

.price-summary-row.is-struck {
    text-decoration: line-through;
    opacity: 0.7;
}

.price-summary-row--total {
    padding-top: 12px;
    border-top: 2px solid var(--border);
    font-size: var(--fs-3);
    font-weight: 700;
    color: var(--text-900);
}

.product-order-submit {
    width: 100%;
    padding: 16px 24px;
    font-size: var(--fs-2);
    font-weight: 600;
    background: var(--color-accent);
    color: var(--white);
    margin-top: 8px;
}

.product-order-submit:hover:not(:disabled),
.product-order-submit:focus-visible:not(:disabled) {
    background: var(--color-accent-2);
}

/* Cart Toast */
.cart-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    z-index: 10002;
    background: var(--bg-0);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 16px 20px;
    min-width: 300px;
    max-width: 90vw;
    opacity: 0;
    pointer-events: none;
    transition: transform 400ms var(--ease-out), opacity 400ms var(--ease-out);
}

.cart-toast.is-visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.cart-toast-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.cart-toast-view-btn {
    padding: 8px 16px;
    font-size: var(--fs-0);
    font-weight: 600;
    background: var(--color-brand);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--dur-2) var(--ease-out);
}

.cart-toast-view-btn:hover,
.cart-toast-view-btn:focus-visible {
    background: var(--color-brand-2);
    outline: 2px solid var(--color-brand);
    outline-offset: 2px;
}

/* Product Card Clickable */
.product-card {
    cursor: pointer;
    transition: transform var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

/* Responsive: Mobile Stacking */
@media (max-width: 768px) {
    .product-detail-container {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 16px;
        max-height: 100vh;
    }

    .product-detail-panel--left {
        transform: translateY(-50px);
        transition-delay: 0ms;
    }

    .product-detail-panel--right {
        transform: translateY(50px);
        transition-delay: 150ms;
    }

    .product-detail-layer[aria-hidden="false"] .product-detail-panel--left {
        transform: translateY(0);
        transition-delay: 100ms;
    }

    .product-detail-layer[aria-hidden="false"] .product-detail-panel--right {
        transform: translateY(0);
        transition-delay: 250ms;
    }

    .product-detail-content,
    .product-order-form-wrapper {
        padding: 20px;
    }

    .product-detail-title {
        font-size: var(--fs-4);
    }

    .product-detail-price-value {
        font-size: var(--fs-4);
    }

    .cylinder-preview-card {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }

    .cylinder-preview-card__image {
        width: 100%;
        height: 180px;
    }

    .cylinder-preview-card__title {
        font-size: var(--fs-2);
    }

    .cylinder-preview-card__price-value {
        font-size: var(--fs-2);
    }
}

@media (prefers-reduced-motion: reduce) {
    .product-detail-panel,
    .product-detail-backdrop,
    .cart-toast {
        transition: none;
        animation: none;
    }

    .product-detail-layer[aria-hidden="false"] .product-detail-panel {
        transform: none;
        opacity: 1;
    }
}

/* ============================================
   PRODUCT DESCRIPTION MODAL
   ============================================ */
.product-desc-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms var(--ease-out);
}

.product-desc-modal:not(.is-hidden) {
    opacity: 1;
    pointer-events: auto;
}

.product-desc-modal.is-hidden {
    display: none;
}

.product-desc-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.55);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 200ms var(--ease-out);
}

.product-desc-modal:not(.is-hidden) .product-desc-modal__backdrop {
    opacity: 1;
}

.product-desc-modal__dialog {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    background: var(--bg-0);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    transform: scale(0.96) translateY(10px);
    transition: transform 200ms var(--ease-out);
    overflow: hidden;
}

.product-desc-modal:not(.is-hidden) .product-desc-modal__dialog {
    transform: scale(1) translateY(0);
}

.product-desc-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 24px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

.product-desc-modal__title {
    font-family: var(--font-heading);
    font-size: var(--fs-4);
    font-weight: 700;
    color: var(--text-900);
    margin: 0;
    flex: 1;
}

.product-desc-modal__close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-700);
    transition: all var(--dur-2) var(--ease-out);
    margin-left: 16px;
}

.product-desc-modal__close:hover,
.product-desc-modal__close:focus-visible {
    background: var(--bg-2);
    border-color: var(--color-brand);
    color: var(--text-900);
    outline: 2px solid var(--color-brand);
    outline-offset: 2px;
}

.product-desc-modal__body {
    padding: 0 24px;
    overflow-y: auto;
    flex: 1;
    -webkit-overflow-scrolling: touch;
}

.product-desc-modal__image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-1);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-desc-modal__image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.product-desc-modal__description {
    font-size: var(--fs-2);
    line-height: var(--line-height-relaxed);
    color: var(--text-700);
    margin-bottom: 24px;
}

.product-desc-modal__specs {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    margin-bottom: 24px;
}

.product-desc-modal__specs-title {
    font-family: var(--font-heading);
    font-size: var(--fs-3);
    font-weight: 700;
    color: var(--text-900);
    margin: 0 0 16px 0;
}

.product-desc-modal__specs-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.product-desc-modal__specs-list li {
    font-size: var(--fs-1);
    color: var(--text-700);
    line-height: var(--line-height-normal);
    padding-left: 24px;
    position: relative;
}

.product-desc-modal__specs-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-brand);
    font-weight: 700;
    font-size: var(--fs-2);
}

.product-desc-modal__price {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 16px;
    background: var(--bg-1);
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-brand);
    margin-bottom: 24px;
}

.product-desc-modal__price-label {
    font-size: var(--fs-2);
    font-weight: 600;
    color: var(--text-700);
}

.product-desc-modal__price-value {
    font-family: var(--font-heading);
    font-size: var(--fs-5);
    font-weight: 700;
    color: var(--color-brand);
}

.product-desc-modal__footer {
    padding: 0 24px 24px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.product-desc-modal__buy-now {
    width: 100%;
}

body.product-desc-modal-open {
    overflow: hidden;
}

/* ============================================
   ORDER PAGE
   ============================================ */
.order-page {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: var(--bg-0);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 32px;
    max-width: 800px;
    margin: 0 auto;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out);
}

.order-page.is-hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.order-page__container {
    animation: fadeInUp 220ms var(--ease-out);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.order-page__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}

.order-page__title {
    font-family: var(--font-heading);
    font-size: var(--fs-5);
    font-weight: 700;
    color: var(--text-900);
    margin: 0;
}

.order-page__close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-700);
    transition: all var(--dur-2) var(--ease-out);
}

.order-page__close:hover,
.order-page__close:focus-visible {
    background: var(--bg-2);
    border-color: var(--color-brand);
    color: var(--text-900);
    outline: 2px solid var(--color-brand);
    outline-offset: 2px;
}

.order-page__content {
    max-width: 700px;
    margin: 0 auto;
    padding-bottom: 40px;
}

.order-page__product-info {
    display: flex;
    gap: 24px;
    padding: 24px;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
}

.order-page__product-image {
    width: 120px;
    height: 120px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.order-page__product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.order-page__product-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.order-page__product-name {
    font-family: var(--font-heading);
    font-size: var(--fs-4);
    font-weight: 700;
    color: var(--text-900);
    margin: 0;
}

.order-page__product-price {
    font-size: var(--fs-2);
    color: var(--text-700);
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.order-page__product-price span:last-child {
    font-family: var(--font-heading);
    font-size: var(--fs-4);
    font-weight: 700;
    color: var(--color-brand);
}

.order-page-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.order-page__total {
    padding: 20px;
    background: var(--bg-1);
    border: 2px solid var(--color-brand);
    border-radius: var(--radius-md);
    margin: 24px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.order-page__total-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: var(--fs-2);
    font-weight: 600;
    color: var(--text-700);
}

.order-page__total-row--discount {
    color: var(--color-brand);
    font-weight: 700;
}

.order-page__total-row--final {
    border-top: 1px dashed var(--border);
    padding-top: 12px;
    margin-top: 4px;
    font-size: var(--fs-3);
    font-weight: 700;
    color: var(--text-900);
}

.order-page__total-row span:last-child {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-900);
}

.order-page__subtotal-value.is-struck,
#order-page-subtotal-value.is-struck,
.order-page__total-row #order-page-subtotal-value.is-struck,
.order-page__total-row span.order-page__subtotal-value.is-struck {
    text-decoration: line-through !important;
    opacity: 0.65 !important;
    color: rgba(71, 85, 105, 0.8) !important;
}

.order-page__total-row--final span:last-child,
.order-page__total-value--final {
    font-family: var(--font-heading);
    font-size: var(--fs-5);
    color: var(--color-brand);
    font-weight: 900;
}

.order-page .order-coupon {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: center;
}

.order-page .order-coupon__btn {
    height: 44px;
    padding: 0 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(11, 58, 91, 0.35);
    background: transparent;
    color: rgba(11, 58, 91, 0.98);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--dur-2) var(--ease-out);
    white-space: nowrap;
}

.order-page .order-coupon__btn:hover:not([disabled]) {
    background: rgba(11, 58, 91, 0.06);
    border-color: rgba(11, 58, 91, 0.5);
}

.order-page .order-coupon__btn:active:not([disabled]) {
    transform: translateY(1px);
}

.order-page .order-coupon__btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

.order-page .order-coupon__btn.is-applied {
    background: #16a34a;
    border-color: #16a34a;
    color: #ffffff;
    cursor: default;
}

.order-page .order-coupon__btn.is-applied:hover {
    background: #15803d;
    border-color: #15803d;
}

.order-page .form-error {
    min-height: 18px;
    color: #b91c1c;
    font-size: 0.9rem;
    margin-top: 4px;
}

.order-page .form-success {
    min-height: 18px;
    color: #16a34a;
    font-size: 0.9rem;
    margin-top: 4px;
    font-weight: 600;
}

.order-page__submit {
    width: 100%;
    padding: 16px;
    font-size: var(--fs-2);
    font-weight: 600;
}

body.order-page-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .product-card__actions {
        flex-direction: column;
    }

    .product-card__actions .btn {
        width: 100%;
    }

    .product-desc-modal__dialog {
        width: 100%;
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
        margin: 0;
    }

    .product-desc-modal__header {
        padding: 20px 20px 0;
    }

    .product-desc-modal__body {
        padding: 0 20px;
    }

    .product-desc-modal__footer {
        padding: 0 20px 20px;
    }

    .order-page {
        padding: 16px;
    }

    .order-page__header {
        padding: 16px 0;
        margin-bottom: 24px;
    }

    .order-page__title {
        font-size: var(--fs-4);
    }

    .order-page__content {
        padding-bottom: 24px;
    }

    .order-page__product-info {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
    }

    .order-page__product-image {
        width: 100%;
        height: 200px;
    }

    .order-page .order-coupon {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .order-page .order-coupon__btn {
        width: 100%;
    }

    .order-page__total {
        padding: 16px;
        margin: 20px 0;
    }

    .order-page__total-row {
        font-size: var(--fs-1);
    }

    .order-page__total-row--final {
        font-size: var(--fs-2);
    }

    .order-page__total-value--final {
        font-size: var(--fs-4);
    }

    .order-page__container {
        animation: fadeInUp 180ms var(--ease-out);
    }

    .order-sidecard {
        width: min(380px, 92vw);
    }

    .order-panel-dialog {
        width: 100%;
        max-width: 100%;
        border-radius: 0;
    }

    .order-form__grid {
        grid-template-columns: 1fr;
    }

    .checkout-dialog {
        width: 100%;
        max-width: 100%;
        border-radius: 0;
    }

    .product-detail-container {
        grid-template-columns: 1fr;
        padding: 16px;
        gap: 16px;
        max-height: 100vh;
    }

    .product-detail-panel--left,
    .product-detail-panel--right {
        transform: translateY(20px);
    }

    .product-detail-layer[aria-hidden="false"] .product-detail-panel--left,
    .product-detail-layer[aria-hidden="false"] .product-detail-panel--right {
        transform: translateY(0);
    }
}

/* Mini Laptop adjustments for order panels */
@media (min-width: 1024px) and (max-width: 1366px) {
    .order-panel-dialog {
        max-width: 580px;
    }

    .order-form__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .order-field--full {
        grid-column: 1 / -1;
    }
}

@media (max-width: 480px) {
    .order-page {
        padding: 16px;
    }

    .order-page__header {
        padding: 12px 0;
        margin-bottom: 20px;
    }

    .order-page__product-info {
        padding: 16px;
        margin-bottom: 24px;
    }

    .order-page__total {
        padding: 14px;
        margin: 16px 0;
    }

    .order-page-form {
        gap: 16px;
    }

    .quantity-stepper {
        width: 100%;
    }

    .quantity-stepper .quantity-input {
        flex: 1;
    }
}

/* ============================================
   CART PAGE
   ============================================ */
.cart-page {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: var(--bg-0);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 32px;
    max-width: 900px;
    margin: 0 auto;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out);
}

.cart-page.is-hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.cart-page__container {
    animation: fadeInUp 220ms var(--ease-out);
}

.cart-page__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}

.cart-page__title {
    font-family: var(--font-heading);
    font-size: var(--fs-5);
    font-weight: 700;
    color: var(--text-900);
    margin: 0;
}

.cart-page__close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-700);
    transition: all var(--dur-2) var(--ease-out);
}

.cart-page__close:hover,
.cart-page__close:focus-visible {
    background: var(--bg-2);
    border-color: var(--color-brand);
    color: var(--text-900);
    outline: 2px solid var(--color-brand);
    outline-offset: 2px;
}

.cart-page__content {
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 40px;
}

.cart-page__empty {
    text-align: center;
    padding: 80px 20px;
}

.cart-page__empty.is-hidden {
    display: none;
}

.cart-page__empty-icon {
    font-size: 4rem;
    margin-bottom: 24px;
    opacity: 0.6;
}

.cart-page__empty-title {
    font-family: var(--font-heading);
    font-size: var(--fs-4);
    font-weight: 700;
    color: var(--text-900);
    margin: 0 0 12px;
}

.cart-page__empty-text {
    color: var(--text-600);
    margin: 0 0 32px;
    font-size: var(--fs-2);
}

.cart-page__orders {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.cart-page__orders.is-hidden {
    display: none;
}

.cart-order-card {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}

.cart-order-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.cart-order-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.cart-order-card__title-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.cart-order-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-3);
    font-weight: 700;
    color: var(--text-900);
    margin: 0;
}

.cart-order-card__date {
    font-size: var(--fs-1);
    color: var(--text-600);
}

.cart-order-card__delete {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-600);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    transition: all var(--dur-2) var(--ease-out);
    flex-shrink: 0;
}

.cart-order-card__delete:hover {
    background: #fee2e2;
    border-color: #dc2626;
    color: #dc2626;
}

.cart-order-card__body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cart-order-card__row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    font-size: var(--fs-2);
}

.cart-order-card__label {
    font-weight: 600;
    color: var(--text-700);
    flex-shrink: 0;
    min-width: 120px;
}

.cart-order-card__value {
    color: var(--text-900);
    text-align: right;
    flex: 1;
    word-break: break-word;
}

/* Cart status badge (quick-read) */
.cart-status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-weight: 900;
    font-size: 0.82rem;
    border: 1px solid var(--badge-br, rgba(15, 23, 42, 0.18));
    background: var(--badge-bg, rgba(15, 23, 42, 0.06));
    color: var(--badge-fg, rgba(15, 23, 42, 0.9));
    white-space: nowrap;
}

.cart-status-badge--pending {
    --badge-bg: #fef3c7;
    --badge-fg: #92400e;
    --badge-br: #fcd34d;
}

.cart-status-badge--confirmed {
    --badge-bg: #dbeafe;
    --badge-fg: #1e40af;
    --badge-br: #93c5fd;
}

.cart-status-badge--delivered {
    --badge-bg: #d1fae5;
    --badge-fg: #065f46;
    --badge-br: #6ee7b7;
}

.cart-status-badge--cancelled {
    --badge-bg: #fee2e2;
    --badge-fg: #991b1b;
    --badge-br: #fca5a5;
}

.cart-status-badge--unknown {
    --badge-bg: rgba(100, 116, 139, 0.12);
    --badge-fg: rgba(51, 65, 85, 1);
    --badge-br: rgba(100, 116, 139, 0.25);
}

.cart-order-card__value.is-struck {
    text-decoration: line-through;
    opacity: 0.65;
    color: var(--text-600);
}

.cart-order-card__row--discount .cart-order-card__value {
    color: var(--color-brand);
    font-weight: 700;
}

.cart-order-card__row--total {
    margin-top: 8px;
    padding-top: 16px;
    border-top: 2px solid var(--border);
    font-size: var(--fs-3);
}

.cart-order-card__row--total .cart-order-card__label {
    font-weight: 700;
    color: var(--text-900);
}

.cart-order-card__value--total {
    font-family: var(--font-heading);
    font-size: var(--fs-4);
    font-weight: 900;
    color: var(--color-brand);
}

.cart-order-card__divider {
    height: 1px;
    background: var(--border);
    margin: 8px 0;
}

body.cart-page-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .cart-page {
        padding: 16px;
    }

    .cart-page__header {
        padding: 16px 0;
        margin-bottom: 24px;
    }

    .cart-page__title {
        font-size: var(--fs-4);
    }

    .cart-page__content {
        padding-bottom: 24px;
    }

    .cart-page__empty {
        padding: 60px 20px;
    }

    .cart-page__empty-icon {
        font-size: 3rem;
        margin-bottom: 20px;
    }

    .cart-page__orders {
        gap: 16px;
    }

    .cart-order-card {
        padding: 20px;
    }

    .cart-order-card__header {
        margin-bottom: 16px;
        padding-bottom: 12px;
    }

    .cart-order-card__title {
        font-size: var(--fs-2);
    }

    .cart-order-card__row {
        font-size: var(--fs-1);
        flex-direction: column;
        gap: 4px;
    }

    .cart-order-card__label {
        min-width: auto;
        font-size: var(--fs-0);
    }

    .cart-order-card__value {
        text-align: left;
    }

    .cart-order-card__row--total {
        font-size: var(--fs-2);
    }

    .cart-order-card__value--total {
        font-size: var(--fs-3);
    }
}

@media (max-width: 480px) {
    .cart-page {
        padding: 12px;
    }

    .cart-order-card {
        padding: 16px;
    }

    .cart-order-card__header {
        flex-direction: column;
        gap: 12px;
    }

    .cart-order-card__delete {
        align-self: flex-end;
    }
}