/* ==========================================================================
   Scan&Shop CSS - Design System & Ruptures de Stock
   ========================================================================== */

:root {
    /* Color Palette - Dark Mode (Default) */
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --border-color: rgba(255, 255, 255, 0.1);
    
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --text-inverse: #0b0f19;

    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.35);

    --signal: #3a76f0;
    --signal-hover: #2c62d6;

    --accent: #10b981;
    --accent-hover: #059669;

    --danger: #ef4444;
    --warning: #f59e0b;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 25px var(--primary-glow);

    --glass-bg: rgba(17, 24, 39, 0.75);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-blur: blur(16px);

    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-primary: #f3f4f6;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f9fafb;
    --border-color: rgba(0, 0, 0, 0.08);

    --text-main: #111827;
    --text-muted: #6b7280;
    --text-inverse: #ffffff;

    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.08);
    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-main);
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Glassmorphism Panel */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

/* Options Saveur / Couleur Pills & Ruptures de Stock */
.option-selector-group {
    margin: 1rem 0;
    text-align: left;
}

.option-selector-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.option-pills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.option-pill {
    padding: 0.4rem 0.85rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);

    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.option-pill:hover:not(.out-of-stock) {
    background: var(--bg-card-hover);
    border-color: var(--signal);
}

.option-pill.active {
    background: var(--signal);
    color: #ffffff;
    border-color: var(--signal);
    box-shadow: 0 4px 12px rgba(58, 118, 240, 0.4);
}

/* Style Option Épuisée (Out of stock) */
.option-pill.out-of-stock {
    background: rgba(239, 68, 68, 0.1) !important;
    color: var(--danger) !important;
    border-color: rgba(239, 68, 68, 0.3) !important;
    opacity: 0.6;
    cursor: not-allowed;
    text-decoration: line-through;
}

.badge-out-of-stock {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.25rem 0.6rem;
    background: rgba(239, 68, 68, 0.85);
    color: #ffffff;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

/* Strict Security QR Gate Overlay */
.qr-gate {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(11, 15, 25, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.qr-gate.hidden {
    display: none !important;
}

.qr-gate-card {
    max-width: 480px;
    width: 100%;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.qr-gate-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--signal), #8b5cf6);
    border-radius: 50%;
    margin: 0 auto 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #ffffff;
    box-shadow: 0 0 25px rgba(58, 118, 240, 0.4);
}

.qr-gate-card h2 {
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
}

.qr-gate-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.qr-subtext {
    font-size: 0.85rem !important;
    color: var(--signal) !important;
    font-weight: 500;
    margin-bottom: 1.5rem !important;
}

.owner-passcode-box {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1.5rem;
    text-align: left;
}

.owner-passcode-box summary {
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-muted);
    user-select: none;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.owner-passcode-box summary:hover {
    color: var(--text-main);
}

.passcode-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.passcode-form input {
    flex: 1;
    padding: 0.5rem 0.8rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-size: 0.9rem;
    outline: none;
}

/* Header Component */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--signal), #8b5cf6);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 0 20px rgba(58, 118, 240, 0.4);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-main), var(--signal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-badge {
    font-size: 0.7rem;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
}

/* Header Search */
.header-search {
    flex: 1;
    max-width: 380px;
    position: relative;
    display: none;
}

@media (min-width: 768px) {
    .header-search {
        display: block;
    }
}

.header-search i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    width: 18px;
    height: 18px;
}

.header-search input {
    width: 100%;
    padding: 0.65rem 1rem 0.65rem 2.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

.header-search input:focus {
    border-color: var(--signal);
    box-shadow: 0 0 0 3px rgba(58, 118, 240, 0.3);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.3rem;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
    text-decoration: none;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--signal), #2563eb);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(58, 118, 240, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(58, 118, 240, 0.5);
}

.btn-signal {
    background: linear-gradient(135deg, var(--signal), var(--signal-hover));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(58, 118, 240, 0.4);
}

.btn-signal:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(58, 118, 240, 0.6);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
}

.btn-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-icon:hover {
    background: var(--bg-card-hover);
    color: var(--signal);
    transform: translateY(-2px);
}

.btn-cart {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1.1rem;
    background: linear-gradient(135deg, var(--signal), #7c3aed);
    color: #ffffff;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-fast);
    box-shadow: 0 4px 15px rgba(58, 118, 240, 0.35);
}

.btn-cart:hover {
    transform: scale(1.05);
}

.cart-badge {
    background: #ffffff;
    color: var(--signal);
    font-size: 0.8rem;
    font-weight: 700;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Interac Box */
.interac-box {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: var(--radius-md);
    padding: 0.85rem 1rem;
    margin: 0.5rem 0;
    text-align: left;
}

.interac-box h5 {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.interac-box p {
    font-size: 0.85rem;
    color: var(--text-main);
    margin-bottom: 0.2rem;
}

/* Main Layout */
.main-content {
    max-width: 1200px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* Hero Section */
.hero-banner {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    background: rgba(58, 118, 240, 0.15);
    color: var(--signal);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    width: fit-content;
}

.hero-content h1 {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.hero-content p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* Catalog Section & Filters */
.catalog-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.section-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
}

.product-count {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.mobile-search {
    position: relative;
}

@media (min-width: 768px) {
    .mobile-search {
        display: none;
    }
}

.mobile-search i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.mobile-search input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: inherit;
}

.categories-bar {
    display: flex;
    gap: 0.6rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    scrollbar-width: thin;
}

.category-tab {
    padding: 0.55rem 1.2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition-fast);
}

.category-tab:hover, .category-tab.active {
    background: var(--signal);
    color: #ffffff;
    border-color: var(--signal);
    box-shadow: 0 4px 15px rgba(58, 118, 240, 0.4);
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
    position: relative;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: rgba(58, 118, 240, 0.4);
    box-shadow: var(--shadow-card);
}

.product-thumb {
    width: 100%;
    height: 190px;
    background: var(--bg-card);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-card:hover .product-thumb img {
    transform: scale(1.08);
}

.product-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.25rem 0.6rem;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-main);
}

.product-info {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    line-height: 1.3;
}

.product-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.product-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
}

.btn-add-cart {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: var(--signal);
    color: #ffffff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.btn-add-cart:hover {
    background: var(--signal-hover);
    transform: scale(1.1);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 1.5rem;
}

.empty-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Modals Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-container {
    width: 100%;
    max-width: 540px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalSlide 0.3s ease-out;
}

@keyframes modalSlide {
    from {
        transform: translateY(20px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.2rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.3rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-main);
    background: var(--bg-card-hover);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

/* Cart Items & Summary */
.cart-items-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 280px;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.cart-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.cart-item-img {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

.cart-item-info {
    flex: 1;
}

.cart-item-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.cart-item-option-badge {
    font-size: 0.75rem;
    color: var(--signal);
    font-weight: 500;
}

.cart-item-price {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.cart-qty-ctrl {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-full);
}

.qty-btn {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:hover {
    background: var(--bg-card-hover);
}

.checkout-form {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    text-align: left;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-group input, .form-group textarea, .form-group select {
    padding: 0.65rem 0.9rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: inherit;
    outline: none;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    border-color: var(--signal);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.cart-totals {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-bottom: 1rem;
}

.total-row {
    display: flex;
    justify-content: space-between;
    font-size: 1.2rem;
    font-weight: 700;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.toast {
    padding: 0.8rem 1.4rem;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    animation: toastIn 0.3s ease-out;
}

@keyframes toastIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Footer */
.app-footer {
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    padding: 2.5rem 1.5rem 1.5rem;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-info h4 {
    font-size: 1.2rem;
    margin-bottom: 0.4rem;
}

.footer-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 400px;
}

.footer-quick-links {
    display: flex;
    gap: 1rem;
}

.footer-link {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: var(--signal);
}

.footer-copy {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Helper Utilities */
.hidden {
    display: none !important;
}

.btn-block {
    width: 100%;
}
.text-center { text-align: center; }