/**
 * 18 Network Theme - Main Styles
 * Dark theme, mobile-first, performance optimized
 */

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
    /* Colors */
    --color-bg: #0f0f19;
    --color-bg-elevated: #161622;
    --color-bg-card: #1e1e2e;
    --color-border: #2a2a3e;
    --color-text: #e8e8f0;
    --color-text-muted: #8888a0;
    --color-accent: #ff3c64;
    --color-accent-hover: #ff5a7a;
    --color-success: #00d26a;
    --color-warning: #ffb800;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    /* Layout */
    --container-max: 1400px;
    --container-padding: var(--space-4);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
}

@media (min-width: 768px) {
    :root {
        --container-padding: var(--space-6);
    }
}

@media (min-width: 1024px) {
    :root {
        --container-padding: var(--space-8);
    }
}

/* ========================================
   BASE STYLES
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
    color: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
    margin: 0;
    overflow-wrap: break-word;
}

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

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

ul, ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Screen reader text */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.site-main {
    min-height: calc(100vh - 200px);
    padding-top: var(--space-6);
    padding-bottom: var(--space-12);
}

/* ========================================
   HEADER
   ======================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: rgba(15, 15, 25, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--space-4);
}

.site-logo {
    display: flex;
    align-items: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.site-logo:hover {
    color: var(--color-accent);
}

.site-logo__text {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.site-nav {
    display: flex;
    align-items: center;
}

.site-nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
}

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

.site-nav__burger {
    position: relative;
    display: block;
    width: 20px;
    height: 2px;
    background-color: currentColor;
    transition: background-color var(--transition-fast);
}

.site-nav__burger::before,
.site-nav__burger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    transition: transform var(--transition-fast);
}

.site-nav__burger::before {
    top: -6px;
}

.site-nav__burger::after {
    top: 6px;
}

.site-nav__menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
}

@media (min-width: 768px) {
    .site-nav__menu {
        display: flex !important;
        position: static;
        background: none;
        border: none;
        padding: 0;
        gap: var(--space-6);
    }
}

.site-nav__menu.is-active {
    display: block;
}

.site-nav__menu li a {
    display: block;
    padding: var(--space-3) 0;
    color: var(--color-text);
    font-weight: 500;
}

@media (min-width: 768px) {
    .site-nav__menu li a {
        padding: var(--space-2) 0;
    }
}

/* Search */
.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.search-toggle:hover {
    color: var(--color-accent);
}

.search-overlay {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
}

.search-form {
    display: flex;
    gap: var(--space-3);
    max-width: 600px;
    margin: 0 auto;
}

.search-form__input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.search-form__input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.search-form__submit {
    padding: var(--space-3) var(--space-6);
    background-color: var(--color-accent);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.search-form__submit:hover {
    background-color: var(--color-accent-hover);
}

/* ========================================
   PAGE HEADER
   ======================================== */
.page-header {
    margin-bottom: var(--space-8);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: 1.2;
}

.taxonomy-description {
    margin-top: var(--space-4);
    color: var(--color-text-muted);
}

/* ========================================
   MODELS GRID
   ======================================== */
.models-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .models-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-5);
    }
}

@media (min-width: 1024px) {
    .models-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-6);
    }
}

@media (min-width: 1280px) {
    .models-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

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

@media (min-width: 640px) {
    .models-grid--compact {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1024px) {
    .models-grid--compact {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* Model Card */
.model-card {
    position: relative;
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.model-card__link {
    display: block;
    color: inherit;
}

.model-card__link:hover {
    color: inherit;
}

.model-card__image-wrapper {
    position: relative;
    aspect-ratio: 3/4;
    overflow: hidden;
    background-color: var(--color-bg-elevated);
}

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

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

.model-card__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--color-text-muted);
}

.model-card__badge {
    position: absolute;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.model-card__badge--live {
    top: var(--space-3);
    left: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-1);
    background-color: var(--color-accent);
    color: white;
}

.model-card__badge-dot {
    width: 6px;
    height: 6px;
    background-color: white;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.model-card__badge--viewers {
    top: var(--space-3);
    right: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-1);
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--color-text);
}

.model-card__badge--age {
    bottom: var(--space-3);
    right: var(--space-3);
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--color-text);
}

.model-card__content {
    padding: var(--space-4);
}

.model-card__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.model-card__tags {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========================================
   LOAD MORE
   ======================================== */
.load-more-wrapper {
    display: flex;
    justify-content: center;
    margin-top: var(--space-10);
}

.load-more-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    background-color: var(--color-accent);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.load-more-btn:hover:not(:disabled) {
    background-color: var(--color-accent-hover);
}

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

.load-more-btn__spinner {
    animation: spin 1s linear infinite;
}

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

/* ========================================
   SINGLE MODEL PAGE
   ======================================== */
.model-single {
    padding-bottom: var(--space-12);
}

/* Model Header */
.model-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .model-header {
        flex-direction: row;
        align-items: flex-start;
        justify-content: space-between;
    }
}

.model-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.model-status--online {
    background-color: rgba(255, 60, 100, 0.15);
    color: var(--color-accent);
}

.model-status--offline {
    background-color: var(--color-bg-elevated);
    color: var(--color-text-muted);
}

.model-status__dot {
    width: 8px;
    height: 8px;
    background-color: currentColor;
    border-radius: 50%;
}

.model-status--online .model-status__dot {
    animation: pulse 1.5s ease-in-out infinite;
}

.model-status__viewers {
    margin-left: var(--space-2);
    padding-left: var(--space-2);
    border-left: 1px solid currentColor;
    opacity: 0.8;
}

.model-title {
    margin-top: var(--space-4);
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

@media (min-width: 768px) {
    .model-title {
        font-size: var(--font-size-4xl);
    }
}

.model-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.model-meta__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.model-meta__tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
}

.model-tag {
    padding: var(--space-1) var(--space-2);
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text);
}

/* Social Share */
.social-share {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.social-share__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.social-share__buttons {
    display: flex;
    gap: var(--space-2);
}

.social-share__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.social-share__btn:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* Model Content Layout */
.model-content {
    display: grid;
    gap: var(--space-8);
}

@media (min-width: 1024px) {
    .model-content {
        grid-template-columns: 1fr 320px;
    }
}

/* Model Embed */
.model-embed-wrapper {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.affiliate-embed {
    position: relative;
    aspect-ratio: 16/9;
    background-color: var(--color-bg-elevated);
}

.affiliate-embed iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.model-embed__fallback {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Network Selector */
.network-selector {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
}

.network-selector__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.network-selector__options {
    display: flex;
    gap: var(--space-2);
}

.network-selector__btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.network-selector__btn:hover,
.network-selector__btn.is-active {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* Model Sidebar */
.model-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.model-thumbnail img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.model-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

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

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

.model-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

.model-description p + p {
    margin-top: var(--space-4);
}

/* Related Models */
.related-models {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.related-models__title {
    margin-bottom: var(--space-6);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
    padding: var(--space-8) 0;
    background-color: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.site-footer__inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.footer-nav__menu {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4) var(--space-6);
}

.footer-nav__menu a {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-nav__menu a:hover {
    color: var(--color-accent);
}

.site-footer__bottom {
    text-align: center;
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.disclaimer {
    margin-top: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ========================================
   NO RESULTS
   ======================================== */
.no-results {
    text-align: center;
    padding: var(--space-12) 0;
    color: var(--color-text-muted);
}

/* ========================================
   MEMBERS AREA HOOK (Placeholder)
   ======================================== */
.members-area {
    padding: var(--space-4);
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    text-align: center;
}

.members-area__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.members-area__text {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

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

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 99999;
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-accent);
    color: white;
    font-weight: 600;
}

.skip-link:focus {
    top: var(--space-4);
}