/* CSS Variables for consistent theming */
:root {
    --color-bg: #000000;
    --color-bg-secondary: #000000;
    --color-bg-nav: #303133;
    --color-bg-card: #0f0f23;
    --color-primary: #ff4757;
    --color-primary-hover: #ff6b7a;
    --color-text: #ffffff;
    --color-text-muted: #a0a0a0;
    --color-border: #2d2d44;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --border-radius: 8px;
    --container-max: 1600px;
    --header-height: 120px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

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

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 16px;
}

/* Header Styles */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-top {
    background-color: var(--color-bg-secondary);
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
}

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

.btn-register {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.btn-register:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
}

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

/* Header Navigation */
.header-nav {
    background-color: var(--color-bg-nav);
    padding: 10px 0;
}

.gender-nav {
    display: flex;
    justify-content: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

.gender-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 24px;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.gender-btn:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.gender-btn.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(255, 71, 87, 0.1);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 24px 0 48px;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

/* Models Grid - Desktop: 6 columns, Mobile: 2 columns */
.models-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
}

/* Model Card */
.model-card {
    background: var(--color-bg-card);
    border-radius: 0;
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    contain: layout style paint;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.model-link {
    display: block;
}

.model-image-wrapper {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg-secondary);
}

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

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

.live-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 2px 8px;
    background: var(--color-primary);
    color: white;
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.model-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    gap: 8px;
}

.model-name {
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.country-flag {
    flex-shrink: 0;
    border-radius: 2px;
}

/* Load More Button */
#load-more-container {
    display: flex;
    justify-content: center;
    margin-top: 32px;
}

.btn-load-more {
    padding: 14px 48px;
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.btn-load-more:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 71, 87, 0.4);
}

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

/* Loading Spinner */
.loading-spinner {
    display: flex;
    justify-content: center;
    padding: 32px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* SEO Content Section */
.seo-content {
    margin-top: 48px;
    padding: 32px;
    background: var(--color-bg-nav);
    border-radius: 8px;
}

.seo-content p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.seo-content p:last-child {
    margin-bottom: 0;
}

.seo-content h2 {
    color: var(--color-text);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 24px 0 16px;
}

.seo-content ul {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
}

.seo-content li {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.7;
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
}

.seo-content li::before {
    content: "•";
    color: var(--color-primary);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.seo-content strong {
    color: var(--color-text);
    font-weight: 600;
}

/* Footer Styles */
.site-footer {
    background: var(--color-bg-secondary);
    padding: 48px 0 24px;
    margin-top: auto;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 32px;
}

.footer-title {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text);
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-section a {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-logo-img {
    height: 30px;
    width: auto;
}

.sitemap-link {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.sitemap-link:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.footer-bottom p:last-child {
    margin-bottom: 0;
}

/* Responsive Design */

/* Tablet */
@media (max-width: 1024px) {
    .models-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 4px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 100px;
    }

    .header-top .container {
        flex-wrap: wrap;
        gap: 12px;
    }

    .logo-img {
        height: 32px;
    }

    .btn-register {
        padding: 8px 16px;
        font-size: 0.75rem;
    }

    .gender-nav {
        gap: 6px;
    }

    .gender-btn {
        padding: 6px 16px;
        font-size: 0.75rem;
    }

    .page-title {
        font-size: 1.25rem;
        margin-bottom: 16px;
    }

    /* Mobile: 2 columns */
    .models-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 4px;
    }

    .model-info {
        padding: 8px 10px;
    }

    .model-name {
        font-size: 0.75rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }

    .footer-section ul {
        align-items: center;
    }

    .btn-load-more {
        padding: 12px 32px;
        font-size: 0.875rem;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 8px;
    }

    .models-grid {
        gap: 3px;
    }

    .live-badge {
        font-size: 0.5rem;
        padding: 2px 6px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    #load-more-container,
    .loading-spinner {
        display: none;
    }

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

    body {
        background: white;
        color: black;
    }
}