/* MODERN DESIGN 2026 - V3 with Beautiful Background */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --brand-primary: #2563eb;
    --brand-secondary: #7c3aed;
    --brand-accent: #f59e0b;
    --ui-success: #10b981;
    --ui-warning: #f59e0b;
    --ui-error: #ef4444;
    --ui-info: #3b82f6;
    --neutral-50: #fafafa;
    --neutral-100: #f4f4f5;
    --neutral-200: #e4e4e7;
    --neutral-300: #d4d4d8;
    --neutral-400: #a1a1aa;
    --neutral-500: #71717a;
    --neutral-600: #52525b;
    --neutral-700: #3f3f46;
    --neutral-800: #27272a;
    --neutral-900: #18181b;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Inter', sans-serif;
    --spacing-unit: 0.25rem;
    --transition-base: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* BEAUTIFUL GRADIENT BACKGROUND */
body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--neutral-800);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* Alternative pattern background overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--neutral-900);
}

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; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header with glass effect */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    gap: 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--brand-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    font-size: 1.75rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    align-items: center;
    margin: 0;
}

nav a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--neutral-700);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition-base);
}

nav a:hover {
    background: var(--neutral-100);
    color: var(--brand-primary);
}

nav a i {
    font-size: 1rem;
}

.language-switcher {
    display: flex;
    gap: 0.25rem;
    background: var(--neutral-100);
    padding: 0.25rem;
    border-radius: 0.5rem;
}

.language-switcher a {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    transition: var(--transition-base);
    text-decoration: none;
    color: var(--neutral-600);
    font-size: 0.875rem;
    font-weight: 600;
}

.language-switcher a.active,
.language-switcher a:hover {
    background: white;
    color: var(--brand-primary);
    box-shadow: var(--shadow-xs);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

.btn i {
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--neutral-100);
    color: var(--neutral-700);
}

.btn-secondary:hover {
    background: var(--neutral-200);
}

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

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--brand-primary);
    color: var(--brand-primary);
}

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

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

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1.0625rem;
}

/* Cards with glass effect */
.card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
    transition: var(--transition-base);
    box-shadow: var(--shadow-lg);
}

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

.card-body {
    padding: 1.5rem;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--neutral-200);
    font-weight: 600;
    color: var(--neutral-900);
}

.grid {
    display: grid;
    gap: 1.5rem;
}

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

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.category-card {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: 0.75rem;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-slow);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.category-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
    z-index: 1;
}

.category-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.category-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-name i {
    font-size: 1.75rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.product-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
    transition: var(--transition-base);
    box-shadow: var(--shadow-lg);
}

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

.product-image-wrapper {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--neutral-100);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    box-shadow: var(--shadow-md);
}

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

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

.product-info {
    padding: 1.25rem;
}

.product-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand-primary);
    margin-bottom: 0.75rem;
}

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

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

.form-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--neutral-700);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.form-label i {
    font-size: 0.875rem;
    color: var(--neutral-500);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--neutral-200);
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    font-family: inherit;
    transition: var(--transition-base);
    background: white;
}

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

.form-control::placeholder {
    color: var(--neutral-400);
}

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

.alert {
    padding: 1rem 1.25rem;
    border-radius: 0.5rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    font-size: 0.9375rem;
}

.alert i {
    font-size: 1.25rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--ui-success);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--ui-error);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--ui-warning);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--ui-info);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge i {
    font-size: 0.75rem;
}

.badge-primary { background: #dbeafe; color: #1e40af; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 0.75rem;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-2xl);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.375rem;
    background: var(--neutral-100);
    color: var(--neutral-600);
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
    font-size: 1.25rem;
}

.modal-close:hover {
    background: var(--neutral-200);
    color: var(--neutral-900);
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.modal-content h2 i {
    color: var(--brand-primary);
}

footer {
    background: rgba(26, 26, 30, 0.95);
    backdrop-filter: blur(10px);
    color: var(--neutral-400);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-content {
    text-align: center;
}

.mt-1 { margin-top: calc(var(--spacing-unit) * 4); }
.mt-2 { margin-top: calc(var(--spacing-unit) * 8); }
.mt-3 { margin-top: calc(var(--spacing-unit) * 12); }
.mt-4 { margin-top: calc(var(--spacing-unit) * 16); }

.mb-1 { margin-bottom: calc(var(--spacing-unit) * 4); }
.mb-2 { margin-bottom: calc(var(--spacing-unit) * 8); }
.mb-3 { margin-bottom: calc(var(--spacing-unit) * 12); }
.mb-4 { margin-bottom: calc(var(--spacing-unit) * 16); }

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

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    nav ul {
        gap: 0.25rem;
    }
    
    nav a {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
    
    nav a span {
        display: none;
    }
    
    .category-grid,
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 1rem;
    }
}

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

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