/**
 * Super Sonic Computers - Main Stylesheet
 * Mobile-first responsive design
 */

/* ============================================================
   CSS VARIABLES (THEME CUSTOMIZABLE)
   ============================================================ */
:root {
    /* Colors - Will be overridden by theme settings */
    --color-primary: #2563eb;
    --color-secondary: #1e40af;
    --color-accent: #f59e0b;
    --color-background: #ffffff;
    --color-surface: #f8fafc;
    --color-text: #1f2937;
    --color-text-muted: #6b7280;
    --color-border: #e5e7eb;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-accent: 'Poppins', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 1rem;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style: none;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-accent);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-md);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.section {
    padding: var(--space-2xl) 0;
}

.section-sm {
    padding: var(--space-xl) 0;
}

.section-lg {
    padding: var(--space-3xl) 0;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* Flexbox */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-secondary);
    color: white;
}

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-border);
}

.btn-accent {
    background-color: var(--color-accent);
    color: white;
}

.btn-accent:hover {
    background-color: #d97706;
    color: white;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ============================================================
   FORMS
   ============================================================ */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--color-text);
}

.form-label.required::after {
    content: ' *';
    color: var(--color-danger);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-background);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-error {
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

.form-hint {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--color-primary);
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

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

.card-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-body {
    padding: var(--space-lg);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.card-text {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    border-radius: var(--radius-full);
}

.badge-new {
    background-color: var(--color-success);
    color: white;
}

.badge-refurbished {
    background-color: var(--color-accent);
    color: white;
}

.badge-rental {
    background-color: var(--color-primary);
    color: white;
}

.badge-out-of-stock {
    background-color: var(--color-danger);
    color: white;
}

.badge-sale {
    background-color: var(--color-danger);
    color: white;
}

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    z-index: 100;
}

.header-sticky {
    position: sticky;
    top: 0;
    box-shadow: var(--shadow-sm);
}

.header-top {
    background-color: var(--color-surface);
    padding: var(--space-sm) 0;
    font-size: 0.875rem;
}

.header-top a {
    color: var(--color-text-muted);
}

.header-top a:hover {
    color: var(--color-primary);
}

.header-main {
    padding: var(--space-md) 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.logo-text span {
    color: var(--color-primary);
}

/* Search */
.header-search {
    flex: 1;
    max-width: 500px;
}

.search-form {
    display: flex;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.header-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text);
    font-size: 0.75rem;
    position: relative;
}

.header-action svg {
    width: 24px;
    height: 24px;
}

.header-action:hover {
    color: var(--color-primary);
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 18px;
    height: 18px;
    background-color: var(--color-danger);
    color: white;
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Navigation */
.nav {
    background-color: var(--color-primary);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md) 0;
    color: white;
    font-weight: 500;
    font-size: 0.9375rem;
}

.nav-link:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

/* ============================================================
   HERO SLIDER
   ============================================================ */
.hero-slider {
    position: relative;
    overflow: hidden;
}

.hero-slide {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
}

.hero-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    padding: var(--space-xl);
    color: white;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    opacity: 0.9;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Slider Controls */
.slider-controls {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-sm);
    z-index: 10;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.5);
    transition: all var(--transition-fast);
}

.slider-dot.active {
    background-color: white;
    width: 30px;
}

.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    z-index: 10;
}

.slider-arrow:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

.slider-arrow.prev {
    left: var(--space-lg);
}

.slider-arrow.next {
    right: var(--space-lg);
}

/* ============================================================
   SERVICES STRIP
   ============================================================ */
.services-strip {
    background-color: var(--color-surface);
    padding: var(--space-xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.service-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.service-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.service-icon svg {
    width: 24px;
    height: 24px;
}

.service-content h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.service-content p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* ============================================================
   PRODUCTS
   ============================================================ */
.products-section {
    padding: var(--space-3xl) 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.section-title {
    font-size: 2rem;
    margin: 0;
}

.view-all {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-primary);
    font-weight: 500;
}

/* Product Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-xl);
}

/* Product Card */
.product-card {
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.product-image {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: var(--color-surface);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-badges {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.product-actions {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    opacity: 0;
    transform: translateX(10px);
    transition: all var(--transition-fast);
}

.product-card:hover .product-actions {
    opacity: 1;
    transform: translateX(0);
}

.action-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-background);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.action-btn:hover {
    background-color: var(--color-primary);
    color: white;
}

.product-info {
    padding: var(--space-lg);
}

.product-category {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.product-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-name a {
    color: var(--color-text);
}

.product-name a:hover {
    color: var(--color-primary);
}

.product-specs {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.product-price {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.price-current {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.price-original {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.btn-add-cart {
    padding: 0.5rem 1rem;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-add-cart:hover {
    background-color: var(--color-secondary);
}

/* ============================================================
   PRODUCT DETAIL
   ============================================================ */
.product-detail {
    padding: var(--space-2xl) 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
}

/* Product Gallery */
.product-gallery {
    position: sticky;
    top: 100px;
}

.gallery-main {
    aspect-ratio: 4 / 3;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.gallery-thumbs {
    display: flex;
    gap: var(--space-sm);
}

.gallery-thumb {
    width: 80px;
    height: 80px;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.gallery-thumb.active,
.gallery-thumb:hover {
    border-color: var(--color-primary);
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Product Info */
.product-header {
    margin-bottom: var(--space-lg);
}

.product-title {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.product-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.stars {
    color: var(--color-accent);
}

.product-price-large {
    margin: var(--space-lg) 0;
    padding: var(--space-lg);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
}

.price-display {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.price-main {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.price-old {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.price-saving {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-success);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

/* Product Actions */
.product-actions-detail {
    display: flex;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
    flex-wrap: wrap;
}

.quantity-selector {
    display: flex;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.quantity-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.quantity-btn:hover {
    background-color: var(--color-border);
}

.quantity-input {
    width: 60px;
    height: 44px;
    text-align: center;
    border: none;
    font-weight: 600;
}

.btn-buy-now {
    flex: 1;
    min-width: 150px;
    padding: 1rem 2rem;
    background-color: var(--color-accent);
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.btn-buy-now:hover {
    background-color: #d97706;
}

/* Product Tabs */
.product-tabs {
    margin-top: var(--space-2xl);
}

.tabs-nav {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--space-lg);
}

.tab-btn {
    padding: var(--space-md) var(--space-xl);
    font-weight: 600;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Specs Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--color-border);
}

.specs-table td {
    padding: var(--space-md);
}

.specs-table td:first-child {
    width: 30%;
    font-weight: 500;
    color: var(--color-text-muted);
}

/* ============================================================
   CART & CHECKOUT
   ============================================================ */
.cart-section {
    padding: var(--space-2xl) 0;
}

.cart-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

/* Cart Items */
.cart-items {
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: var(--space-lg);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    align-items: center;
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image {
    width: 100px;
    height: 100px;
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item-details h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.cart-item-details p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0;
}

.cart-item-price {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Cart Summary */
.cart-summary {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.summary-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.summary-row.total {
    font-size: 1.25rem;
    font-weight: 700;
    border-bottom: none;
    padding-top: var(--space-md);
    margin-top: var(--space-md);
}

.summary-row.total span:last-child {
    color: var(--color-primary);
}

/* Checkout Form */
.checkout-section {
    padding: var(--space-2xl) 0;
}

.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-2xl);
    align-items: start;
}

.checkout-form-section {
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.form-section-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

/* Payment Methods */
.payment-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.payment-method {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.payment-method:hover,
.payment-method.selected {
    border-color: var(--color-primary);
}

.payment-method input {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
}

.payment-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
}

/* ============================================================
   SERVICES PAGES
   ============================================================ */
.services-hero {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    padding: var(--space-3xl) 0;
    text-align: center;
}

.services-hero h1 {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.services-hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Service Cards */
.service-cards {
    padding: var(--space-3xl) 0;
}

.service-card {
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

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

.service-card-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-xl);
    margin: 0 auto var(--space-lg);
}

.service-card-icon svg {
    width: 40px;
    height: 40px;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.service-card p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

/* Booking Form */
.booking-section {
    padding: var(--space-3xl) 0;
    background-color: var(--color-surface);
}

.booking-form-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-md);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background-color: var(--color-text);
    color: white;
    padding-top: var(--space-3xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

.footer-column h4 {
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    color: white;
}

.footer-column ul li {
    margin-bottom: var(--space-sm);
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: white;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-sm);
}

.footer-contact svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: white;
}

.social-link svg {
    width: 18px;
    height: 18px;
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin: 0;
}

.payment-icons {
    display: flex;
    gap: var(--space-sm);
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-5,
    .grid-6 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .product-gallery {
        position: static;
    }
    
    .cart-grid,
    .checkout-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    
    .hero-slide {
        min-height: 400px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-primary);
    }
    
    .nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        padding: var(--space-md);
        gap: 0;
    }
    
    .nav-link {
        padding: var(--space-md);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .header-search {
        display: none;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cart-item {
        grid-template-columns: 80px 1fr;
        gap: var(--space-md);
    }
    
    .cart-item-actions {
        grid-column: 1 / -1;
        justify-content: space-between;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-slide {
        min-height: 350px;
    }
    
    .hero-content {
        padding: var(--space-lg);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-actions-detail {
        flex-direction: column;
    }
    
    .btn-buy-now {
        width: 100%;
    }
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.animate-fade-in {
    animation: fadeIn 0.3s ease;
}

.animate-slide-up {
    animation: slideUp 0.4s ease;
}