:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255,255,255,0.03);
    --bg-glass: rgba(255,255,255,0.05);
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --border: rgba(255,255,255,0.08);
    --accent-blue: #2563EB;
    --accent-violet: #7C3AED;
    --accent-pink: #EC4899;
    --accent-green: #22C55E;
    --accent-orange: #F59E0B;
    --accent-cyan: #06B6D4;
    --accent-amber: #FBBF24;
    --accent-red: #EF4444;
    --radius: 16px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--accent-violet);
    color: white;
}

/* === NAVIGATION === */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10,10,15,0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-logo span {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
    transition: var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-toggle { display: none; }

/* === HERO === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(37,99,235,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(124,58,237,0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(236,72,153,0.1) 0%, transparent 50%);
    animation: heroPulse 8s ease-in-out infinite;
}

@keyframes heroPulse {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.8; }
    50% { transform: scale(1.1) rotate(2deg); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.hero-title .gradient {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet), var(--accent-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 32px;
}

.hero-line {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
    border-radius: 2px;
    margin: 0 auto 24px;
}

.hero-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* === SECTIONS === */
.section {
    padding: 100px 24px;
    position: relative;
}

.section-alt {
    background: var(--bg-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    padding: 6px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-violet);
    margin-bottom: 16px;
}

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-lead {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === CARDS === */
.cards-grid {
    display: grid;
    gap: 24px;
}

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

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(255,255,255,0.15);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.card-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.card-accent {
    width: 40px;
    height: 4px;
    border-radius: 2px;
    margin-bottom: 20px;
}

.card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.card h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.card-small {
    padding: 24px;
}

/* === TABLE === */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-card);
}

.models-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.models-table th {
    text-align: left;
    padding: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.models-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.models-table tr:hover td {
    background: rgba(255,255,255,0.02);
}

.models-table tr:last-child td {
    border-bottom: none;
}

/* === MODEL CARDS === */
.models-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.model-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.model-card:hover {
    border-color: rgba(255,255,255,0.15);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.model-header {
    padding: 20px 32px;
    color: white;
}

.model-header h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.model-header span {
    opacity: 0.85;
    font-size: 0.875rem;
}

.model-body {
    padding: 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.model-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.model-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.model-col li {
    position: relative;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.model-col li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-green);
}

.model-col .minuses li::before {
    color: var(--accent-red);
}

.info-card {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
}

.info-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.info-card.free {
    border-color: rgba(34,197,94,0.2);
}

/* === FEATURES === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-2px);
    border-color: rgba(255,255,255,0.15);
}

.feature-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 6px;
}

.feature-item h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* === BADGE === */
.badge-container {
    text-align: center;
    margin-top: 40px;
}

.badge {
    display: inline-block;
    padding: 10px 24px;
    background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(124,58,237,0.2));
    border: 1px solid rgba(124,58,237,0.3);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.text-muted {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 12px;
}

.text-block {
    text-align: center;
    max-width: 800px;
    margin: 40px auto 0;
    padding: 24px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

/* === DEPARTMENTS === */
.dept-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 24px;
    transition: var(--transition);
}

.dept-section:hover {
    border-color: rgba(255,255,255,0.12);
}

.dept-header {
    padding: 20px 32px;
    color: white;
}

.dept-header h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.dept-header span {
    opacity: 0.85;
    font-size: 0.875rem;
}

.dept-body {
    padding: 32px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
}

.dept-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.dept-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.dept-col li {
    position: relative;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.dept-col li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-violet);
}

.prompt-box {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    position: relative;
    padding-left: 44px;
}

.prompt-num {
    position: absolute;
    left: 12px;
    top: 12px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-violet);
    color: white;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
}

.prompt-box p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* === CASES === */
.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.case-item {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
    background: var(--bg-card);
    cursor: zoom-in;
}

.case-item:hover {
    transform: scale(1.02);
    border-color: rgba(255,255,255,0.15);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.case-item img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    object-position: top;
    display: block;
    cursor: zoom-in;
}

/* === LIGHTBOX === */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(10px);
}

.lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
    cursor: zoom-out;
}

.lightbox.active img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.lightbox-close:hover {
    background: var(--accent-red);
    border-color: var(--accent-red);
}

/* === TASKS === */
.task-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent-blue);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.task-card:hover {
    transform: translateX(4px);
    border-color: rgba(255,255,255,0.15);
}

.task-card h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.task-card .answer {
    margin-top: 12px;
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.875rem;
}

/* === RECOMMENDATIONS === */
.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.rec-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}

.rec-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255,255,255,0.15);
}

.rec-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.rec-card h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.rec-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* === FOOTER === */
.footer {
    padding: 40px 24px;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate {
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate.visible {
    animation: fadeInUp 0.6s ease forwards;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .cards-grid.four { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .dept-body { grid-template-columns: 1fr 1fr; }
    .recommendations-grid { grid-template-columns: repeat(2, 1fr); }
    .model-body { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
    }
    .nav-toggle span {
        width: 24px;
        height: 2px;
        background: var(--text-primary);
        transition: var(--transition);
    }
    
    .cards-grid.two,
    .cards-grid.three,
    .cards-grid.four { grid-template-columns: 1fr; }
    
    .features-grid { grid-template-columns: 1fr; }
    .dept-body { grid-template-columns: 1fr; }
    .recommendations-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    
    .section { padding: 60px 16px; }
    .hero { padding: 100px 16px 60px; }
    
    .model-body,
    .dept-body { padding: 20px; }
    
    .card,
    .rec-card,
    .task-card { padding: 20px; }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}