/* Modern Black & White CSS Variables - Tailwind Inspired */
:root {
    /* Core Colors */
    --black: #000000;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --primary: var(--black);
    --secondary: var(--gray-600);
    --background: var(--white);
    --surface: var(--gray-50);
    --border: var(--gray-200);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-400);
    
    /* Status Colors (minimal) */
    --success: #10b981;
    --danger: #ef4444;
    --warning: #5c5c5c;
    --info: var(--gray-600);
    --accent: #454545;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100vw;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header Styles */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

/* Quando o menu está aberto, o header deve ficar acima do menu */
.nav-tabs.mobile-active ~ * .header,
body:has(.nav-tabs.mobile-active) .header {
    z-index: 1004;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    gap: 1rem;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    position: relative;
    z-index: 1003;
}

.menu-toggle:hover {
    background: var(--gray-100);
}

.menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
    border-radius: 1px;
    display: block;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.menu-toggle span:nth-child(1) {
    top: 12px;
}

.menu-toggle span:nth-child(2) {
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
}

.menu-toggle span:nth-child(3) {
    bottom: 12px;
}

.menu-toggle.active span:nth-child(1) {
    top: 50%;
    transform: translateX(-50%) translateY(-50%) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-50%) translateY(-50%) scale(0);
}

.menu-toggle.active span:nth-child(3) {
    bottom: auto;
    top: 50%;
    transform: translateX(-50%) translateY(-50%) rotate(-45deg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--black);
    color: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

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

.search-container {
    flex: 1;
    max-width: 32rem;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 1rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--black);
    box-shadow: 0 0 0 3px rgb(0 0 0 / 0.1);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    position: absolute;
    right: 0.25rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--black);
    border: none;
    border-radius: var(--radius);
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    cursor: pointer;
    transition: all 0.2s ease;
}

.search-btn:hover {
    background: var(--gray-800);
}

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

.header-btn {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.header-btn:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--text-primary);
    text-decoration: none;
}

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

.header-btn.primary:hover {
    background: var(--gray-800);
    border-color: var(--gray-800);
}

.user-menu {
    position: relative;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    min-width: 12rem;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 1001;
    margin-top: 0.25rem;
}

.user-dropdown.active {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s ease;
    font-size: 0.875rem;
}

.user-dropdown a:hover {
    background: var(--gray-50);
}

.user-dropdown a:last-child {
    border-bottom: none;
}

/* Hero Section */
.hero {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 3rem 0;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.hero-info {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow);
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 400;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
}

.hero-stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

.hero-stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Navigation Tabs */
.nav-tabs {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    position: relative;
    z-index: 999;
}

.nav-tabs.mobile-active {
    max-height: 1000px;
    opacity: 1;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    gap: 0;
}

.nav-tab {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    text-decoration: none;
    font-size: 0.875rem;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: var(--gray-50);
    text-decoration: none;
}

.nav-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--black);
    background: var(--white);
}

/* Main Content */
.main-content {
    padding: 2rem 0;
    min-height: 60vh;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

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

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-body {
    color: var(--text-primary);
}

/* Product Cards */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    position: relative;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-300);
}

.product-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/4;
    /* background: var(--gray-100); */
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.2s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.02);
}

.product-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--white);
}

.badge-novo { background: var(--success); }
.badge-usado { background: var(--info); }
.badge-seminovo { background: var(--accent); color: var(--white); }

.product-info {
    padding: 1.25rem;
}

.product-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.product-category {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.product-price {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.price-current {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.price-original {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: line-through;
}

.product-seller {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.product-actions {
    display: flex;
    gap: 0.5rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.25rem;
}

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

.btn-primary:hover {
    background: var(--gray-800);
    border-color: var(--gray-800);
    color: var(--white);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--text-primary);
    text-decoration: none;
}

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

.btn-success:hover {
    background: #059669;
    border-color: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
}

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--black);
    box-shadow: 0 0 0 3px rgb(0 0 0 / 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1rem 0.75rem;
    padding-right: 2.5rem;
    appearance: none;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.form-check-input {
    width: 1rem;
    height: 1rem;
    accent-color: var(--accent);
}

.form-check-label {
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.875rem;
}

.form-error {
    color: var(--danger);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.form-success {
    color: var(--success);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    border: 1px solid transparent;
    font-size: 0.875rem;
}

.alert-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

.alert-danger {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-700);
}

.alert-info {
    background: var(--gray-50);
    border-color: var(--gray-200);
    color: var(--gray-700);
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    background: var(--gray-50);
    color: var(--text-primary);
    font-weight: 600;
}

.table td {
    color: var(--text-primary);
}

.table-striped tbody tr:nth-child(even) {
    background: var(--gray-50);
}

.table-hover tbody tr:hover {
    background: var(--gray-100);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    margin: 2rem 0;
}

.pagination a,
.pagination span {
    padding: 0.5rem 0.75rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.pagination a:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    text-decoration: none;
}

.pagination .current {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    text-align: center;
    transition: all 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-change {
    font-size: 0.75rem;
    margin-top: 0.5rem;
    font-weight: 500;
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--danger);
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    display: none;
}

.loading.active {
    display: block;
}

.loading-spinner {
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--border);
    border-top: 2px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    max-width: 50rem;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
}

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

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: var(--gray-100);
    border: none;
    border-radius: var(--radius);
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Footer */
.footer {
    background: var(--gray-50);
    border-top: 1px solid var(--border);
    padding: 2rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 600;
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    line-height: 1.6;
    font-size: 0.875rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        z-index: 1004; /* Header sempre acima do menu no mobile */
    }
    
    .header-top {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .logo {
        flex: 1;
        min-width: 0;
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .search-container {
        order: 3;
        flex-basis: 100%;
        width: 100%;
    }
    
    .header-actions {
        gap: 0.5rem;
        flex-wrap: wrap;
    }
    
    .header-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
    
    .header-btn .user-name {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    /* Overlay escuro quando menu está aberto */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
        z-index: 1001;
    }
    
    .nav-overlay.active {
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-tabs {
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        border-bottom: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        width: 100%;
        z-index: 1002;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        margin-top: 0;
        background: var(--white);
    }
    
    .nav-tabs.mobile-active {
        max-height: 100vh;
        opacity: 1;
        border-bottom: 1px solid var(--border);
        overflow-y: auto;
        z-index: 1002;
    }
    
    /* Quando o menu está aberto, garantir que o header fique acima do menu */
    .header {
        z-index: 1004;
    }
    
    /* Adicionar padding-top para compensar o header sticky */
    .nav-tabs.mobile-active .nav-container {
        padding-top: 70px; /* altura aproximada do header no mobile */
    }
    
    .nav-container {
        padding: 0.5rem 1rem;
        flex-direction: column;
        gap: 0;
    }
    
    .nav-tab {
        padding: 0.875rem 1rem;
        border-bottom: 1px solid var(--border);
        border-left: 3px solid transparent;
        width: 100%;
        text-align: left;
    }
    
    .nav-tab.active {
        border-left-color: var(--black);
        border-bottom-color: var(--border);
    }
    
    .header-btn {
        padding: 0.5rem;
        min-width: 40px;
        justify-content: center;
    }
    
    .header-btn svg {
        margin: 0;
    }
    
    .header-btn span:not(.user-name) {
        display: none;
    }
    
    .cart-count {
        position: absolute;
        top: -4px;
        right: -4px;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
    
    .modal-body {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .header-top {
        padding: 0.75rem 0;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 0.875rem;
    }
    
    .logo-text {
        font-size: 0.875rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(1rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.4s ease forwards;
}

.fade-in:nth-child(even) {
    animation-delay: 0.1s;
}

.fade-in:nth-child(3n) {
    animation-delay: 0.2s;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: 0.5rem; }
.ml-2 { margin-left: 1rem; }
.ml-3 { margin-left: 1.5rem; }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: 0.5rem; }
.mr-2 { margin-right: 1rem; }
.mr-3 { margin-right: 1.5rem; }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: 0.5rem; }
.pt-2 { padding-top: 1rem; }
.pt-3 { padding-top: 1.5rem; }
.pt-4 { padding-top: 2rem; }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: 0.5rem; }
.pb-2 { padding-bottom: 1rem; }
.pb-3 { padding-bottom: 1.5rem; }
.pb-4 { padding-bottom: 2rem; }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: 0.5rem; }
.pl-2 { padding-left: 1rem; }
.pl-3 { padding-left: 1.5rem; }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: 0.5rem; }
.pr-2 { padding-right: 1rem; }
.pr-3 { padding-right: 1.5rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

.w-full { width: 100%; }
.w-auto { width: auto; }
.w-1\/2 { width: 50%; }
.w-1\/3 { width: 33.333333%; }
.w-2\/3 { width: 66.666667%; }
.w-1\/4 { width: 25%; }
.w-3\/4 { width: 75%; }

.h-full { height: 100%; }
.h-auto { height: auto; }
.h-screen { height: 100vh; }

.rounded-none { border-radius: 0; }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: 9999px; }

.border { border: 1px solid var(--border); }
.border-0 { border: 0; }
.border-t { border-top: 1px solid var(--border); }
.border-b { border-bottom: 1px solid var(--border); }
.border-l { border-left: 1px solid var(--border); }
.border-r { border-right: 1px solid var(--border); }

.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.font-thin { font-weight: 100; }
.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.font-black { font-weight: 900; }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }

.text-black { color: var(--black); }
.text-white { color: var(--white); }
.text-gray-400 { color: var(--gray-400); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-800 { color: var(--gray-800); }
.text-gray-900 { color: var(--gray-900); }

.bg-white { background-color: var(--white); }
.bg-black { background-color: var(--black); }
.bg-gray-50 { background-color: var(--gray-50); }
.bg-gray-100 { background-color: var(--gray-100); }
.bg-gray-200 { background-color: var(--gray-200); }
.bg-gray-800 { background-color: var(--gray-800); }
.bg-gray-900 { background-color: var(--gray-900); }

.hover\:bg-gray-50:hover { background-color: var(--gray-50); }
.hover\:bg-gray-100:hover { background-color: var(--gray-100); }
.hover\:bg-gray-800:hover { background-color: var(--gray-800); }

.transition { transition: all 0.2s ease; }
.transition-colors { transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease; }
.transition-transform { transition: transform 0.2s ease; }

.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }

.select-none { user-select: none; }
.select-text { user-select: text; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

.transform { transform: translateZ(0); }
.scale-95 { transform: scale(0.95); }
.scale-100 { transform: scale(1); }
.scale-105 { transform: scale(1.05); }

.-translate-y-1 { transform: translateY(-0.25rem); }
.-translate-y-2 { transform: translateY(-0.5rem); }
.translate-y-0 { transform: translateY(0); }