/* ============================================
   TS Navigation - Premium Design System (Refined)
   Design Philosophy: Order, Airy, Natural
   ============================================ */

:root {
    /* Color Palette - Natural Blue & Professional */
    --primary: #2563eb; /* Natural Blue */
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --secondary: #10b981;
    --accent: #f59e0b;
    
    /* Neutral Palette - Soft & Sophisticated */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-hover: #f8fafc;
    
    /* Text Colors - Hierarchy & Readability */
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    
    /* Border & Shadow - Depth & Elegance */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    
    /* Shadows - Minimal & Clean */
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-md: 0 2px 4px 0 rgba(15, 23, 42, 0.08);
    
    /* Spacing Grid - 8px Base */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 80px;
    
    /* Border Radius - Soft Geometry */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 99px;
    
    /* Transitions - Smooth & Intentional */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Global Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ============================================
   Header & Navigation - Clean & Minimal
   ============================================ */

header {
    background: rgba(248, 250, 252, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

/* Logo styles removed as requested */

.site-title {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.9375rem;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
}

.lang-switcher {
    display: flex;
    background: rgba(241, 245, 249, 0.8);
    padding: var(--space-xs);
    border-radius: var(--radius-lg);
    gap: var(--space-xs);
    backdrop-filter: blur(10px);
}

.lang-switcher a {
    text-decoration: none;
    color: var(--text-muted);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 700;
    transition: var(--transition-fast);
    cursor: pointer;
}

.lang-switcher a:hover {
    color: var(--primary);
}

.lang-switcher a.active {
    /* Removed active state as requested */
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: var(--transition-base);
}

.menu-toggle:hover {
    color: var(--primary);
}

/* ============================================
   Hero Section - Clean & Immersive
   ============================================ */

.hero {
    padding: var(--space-4xl) 0 var(--space-3xl);
    text-align: center;
    background: linear-gradient(180deg, rgba(248, 250, 252, 0) 0%, rgba(219, 234, 254, 0.2) 100%),
                radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(219, 234, 254, 0.6) 100%);
    color: var(--primary-dark);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--space-lg);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.04em;
    line-height: 1.1;
    position: relative;
    z-index: 1;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
    position: relative;
    z-index: 1;
}

.search-container {
    max-width: 640px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.search-icon {
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    pointer-events: none;
}

#search-input {
    width: 100%;
    padding: var(--space-lg) var(--space-lg) var(--space-lg) calc(var(--space-lg) * 3);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-light);
    font-size: 1.1rem;
    background: white;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    outline: none;
    font-family: inherit;
}

#search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#search-input::placeholder {
    color: var(--text-light);
}

/* ============================================
   Categories Navigation - Clean Chips
   ============================================ */

.categories-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin: var(--space-3xl) 0;
    justify-content: center;
}

.cat-btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-light);
    background: white;
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

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

.cat-btn.active {
    /* Removed active state as requested */
}

/* ============================================
   Sites Grid & Cards - Clean & Minimal
   ============================================ */

.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.site-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.6s ease-out forwards;
}

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

.site-card:hover {
    border-color: var(--primary-light);
    background: rgba(59, 130, 246, 0.02);
}

.card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.site-logo-container {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    flex-shrink: 0;
}

.site-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.card-title-area {
    flex: 1;
}

.card-title-area h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.01em;
}

.category-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.site-card p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
}

.card-footer {
    margin-top: auto;
}

.site-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: var(--space-md);
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 0.875rem;
    transition: var(--transition-base);
    border: 1px solid var(--primary);
}

.site-link:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Prompt Gallery Styles
   ============================================ */

.section-title {
    text-align: center;
    margin: var(--space-3xl) 0 var(--space-xl);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.prompts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.prompt-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    transition: var(--transition-base);
}

.prompt-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

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

.prompt-category {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    text-transform: uppercase;
}

.prompt-content {
    background: var(--bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: var(--space-md) 0;
    position: relative;
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid var(--border-light);
}

.copy-btn {
    width: 100%;
    padding: var(--space-sm);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.copy-btn:hover {
    background: var(--primary-dark);
}

.copy-btn.copied {
    background: var(--secondary);
}

/* ============================================
   Footer - Elegant Closure
   ============================================ */

footer {
    padding: var(--space-xl) 0;
    background: linear-gradient(180deg, white 0%, rgba(248, 250, 252, 0.5) 100%);
    border-top: 1px solid var(--border-light);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-weight: 800;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.footer-logo img {
    width: 28px;
    height: 28px;
}

.copyright {
    color: var(--text-muted);
    font-size: 0.9375rem;
    letter-spacing: 0.01em;
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
}

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

/* ============================================
   Responsive Design - Mobile First
   ============================================ */

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }

    .header-right {
        gap: var(--space-md);
    }

    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(248, 250, 252, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-lg);
        border-bottom: 1px solid var(--border-light);
    }
    
    .nav-menu.show {
        display: flex;
    }
    
    .lang-switcher {
        width: 100%;
        justify-content: center;
    }
    
    .sites-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .site-card {
        padding: var(--space-md);
    }

    .card-header {
        gap: var(--space-md);
    }

    .site-card p {
        -webkit-line-clamp: 2;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

    .hero {
        padding: var(--space-3xl) 0 var(--space-2xl);
    }

    .hero h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    #search-input {
        font-size: 1rem;
        padding: var(--space-md) var(--space-md) var(--space-md) calc(var(--space-md) * 2.5);
    }

    .categories-nav {
        gap: var(--space-sm);
        margin: var(--space-2xl) 0;
    }

    .cat-btn {
        padding: var(--space-xs) var(--space-md);
        font-size: 0.875rem;
    }

    .site-card {
        padding: var(--space-md);
    }

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

/* ============================================
   Accessibility & Reduced Motion
   ============================================ */

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