/* Zekron AI - Premium AI Platform Stylesheet */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --primary-glow: rgba(99, 102, 241, 0.3);
    --accent: #22d3ee;
    --accent-pink: #f472b6;
    --accent-purple: #a78bfa;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --background: #0a0a0f;
    --background-secondary: #111118;
    --surface: #16161f;
    --surface-light: #1e1e2d;
    --border: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #a78bfa 50%, #f472b6 100%);
    --gradient-2: linear-gradient(135deg, #22d3ee 0%, #6366f1 100%);
    --gradient-3: linear-gradient(180deg, rgba(99, 102, 241, 0.15) 0%, transparent 100%);
    --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.3);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    --radius: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --transition: all 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, 'Segoe UI', Roboto, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 4rem; letter-spacing: -0.02em; }
h2 { font-size: 2.75rem; letter-spacing: -0.02em; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p { color: var(--text-secondary); }

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 8rem 0;
    position: relative;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 0 2rem;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--gradient-1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition);
}

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

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-1);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9375rem;
    color: white !important;
    box-shadow: 0 4px 20px var(--primary-glow);
    transition: var(--transition);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow);
    color: white;
}

.btn-secondary {
    background: var(--surface-light);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--surface);
    border-color: var(--primary);
    color: var(--text-primary);
}

.btn-full { width: 100%; }
.btn-large { padding: 1.125rem 2.5rem; font-size: 1rem; }

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 2rem 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.orb-1 {
    width: 700px;
    height: 700px;
    background: var(--primary);
    top: -300px;
    right: -200px;
    opacity: 0.25;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-purple);
    bottom: -200px;
    left: -150px;
    opacity: 0.2;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-pink);
    top: 40%;
    left: 30%;
    opacity: 0.1;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: linear-gradient(180deg, white, transparent 80%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 650px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border-light);
    border-radius: 9999px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.stat-item { text-align: center; }

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 480px;
    z-index: 1;
}

.visual-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--surface-light);
    border-bottom: 1px solid var(--border);
}

.card-dots {
    display: flex;
    gap: 6px;
}

.card-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.card-dots span:first-child { background: #ef4444; }
.card-dots span:nth-child(2) { background: #f59e0b; }
.card-dots span:last-child { background: #10b981; }

.card-title {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.card-code {
    padding: 1.5rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8125rem;
    line-height: 1.8;
    overflow-x: auto;
    color: var(--text-secondary);
}

.code-keyword { color: #c792ea; }
.code-string { color: #c3e88d; }

/* Section Common */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Models Section */
.models-section {
    padding: 8rem 0;
    background: var(--background-secondary);
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.model-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: var(--transition);
}

.model-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    opacity: 0;
    transition: var(--transition);
}

.model-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.model-card:hover::before { opacity: 1; }

.model-card.featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, var(--surface) 100%);
}

.model-card.featured::before { opacity: 1; }

.model-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.375rem 1rem;
    background: var(--gradient-1);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.model-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.model-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary-light);
}

.model-name {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.model-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    min-height: 70px;
}

.model-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.model-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.model-features svg {
    width: 18px;
    height: 18px;
    color: var(--success);
    flex-shrink: 0;
}

.model-pricing {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.model-pricing .price {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.model-pricing .per {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* Technology Section */
.technology-section {
    padding: 8rem 0;
    background: var(--background);
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.tech-content .section-tag { margin-bottom: 1rem; }
.tech-content .section-title { text-align: left; margin-bottom: 1rem; }
.tech-content .section-description { text-align: left; margin: 0 0 2rem; }

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tech-feature {
    display: flex;
    gap: 1rem;
}

.tech-feature-icon {
    width: 48px;
    height: 48px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tech-feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-light);
}

.tech-feature-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.tech-feature-content p {
    font-size: 0.9375rem;
    line-height: 1.6;
}

.tech-visual {
    display: flex;
    justify-content: center;
}

.matrix-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    width: 100%;
    max-width: 420px;
}

.matrix-title {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 1.5rem;
    font-family: 'JetBrains Mono', monospace;
}

.matrix-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 4px;
    margin-bottom: 1.5rem;
}

.matrix-cell {
    aspect-ratio: 1;
    background: var(--surface-light);
    border-radius: 3px;
    animation: matrixPulse 3s infinite;
}

.matrix-cell:nth-child(3n) { background: rgba(99, 102, 241, 0.3); }
.matrix-cell:nth-child(5n) { background: rgba(34, 211, 238, 0.3); }
.matrix-cell:nth-child(7n) { background: rgba(244, 114, 182, 0.3); }

@keyframes matrixPulse {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.matrix-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Pricing Section */
.pricing-section {
    padding: 8rem 0;
    background: var(--background-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.pricing-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-light);
}

.pricing-card.featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, var(--surface) 100%);
    transform: scale(1.02);
}

.pricing-card.featured:hover {
    transform: scale(1.02) translateY(-4px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.375rem 1rem;
    background: var(--gradient-1);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.pricing-header p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.pricing-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 2rem;
}

.pricing-amount .currency {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.pricing-amount .amount {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child { border-bottom: none; }

.pricing-features svg {
    width: 18px;
    height: 18px;
    color: var(--success);
    flex-shrink: 0;
}

/* Documentation Section */
.docs-section {
    padding: 8rem 0;
    background: var(--background);
}

.docs-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.docs-tab {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: var(--transition);
}

.docs-tab:hover {
    background: var(--surface);
    color: var(--text-primary);
}

.docs-tab.active {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
}

.docs-content { margin-bottom: 4rem; }

.code-block {
    display: none;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.code-block.active { display: block; }

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--surface-light);
    border-bottom: 1px solid var(--border);
}

.code-header span {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    background: var(--surface);
    color: var(--text-primary);
}

.copy-btn svg {
    width: 16px;
    height: 16px;
}

.code-block pre {
    padding: 1.5rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.8125rem;
    line-height: 1.8;
    overflow-x: auto;
    color: var(--text-secondary);
}

.api-endpoints h3 {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
}

.endpoint-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.endpoint-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
}

.endpoint-card:hover { border-color: var(--border-light); }

.endpoint-method {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.6875rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

.endpoint-method.get {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.endpoint-method.post {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-light);
}

.endpoint-path {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.endpoint-card p {
    color: var(--text-muted);
    font-size: 0.8125rem;
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.1) 0%, transparent 100%);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

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

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    padding: 4rem 0 2rem;
    background: var(--background-secondary);
    border-top: 1px solid var(--border);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
}

.footer-brand { max-width: 300px; }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    color: var(--text-muted);
    font-size: 0.9375rem;
    padding: 0.375rem 0;
    transition: var(--transition);
}

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

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

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8125rem;
}

/* Responsive */
@media (max-width: 1200px) {
    .hero-visual { display: none; }
    .hero-content { max-width: 100%; text-align: center; }
    .hero-description { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
}

@media (max-width: 968px) {
    .tech-grid { grid-template-columns: 1fr; gap: 3rem; }
    .tech-content .section-title,
    .tech-content .section-description { text-align: center; }
    .tech-content .section-description { margin: 0 auto 2rem; }
    .footer-main { flex-direction: column; gap: 2rem; }
    .footer-links { flex-wrap: wrap; gap: 2rem; }
}

@media (max-width: 768px) {
    .navbar { padding: 0 1rem; }
    .nav-links { display: none; }
    .hero { padding: 100px 1rem 60px; }
    .hero-stats { flex-direction: column; gap: 1.5rem; }
    .stat-divider { display: none; }
    .section-container { padding: 0 1rem; }
    .models-section, .technology-section, .pricing-section, .docs-section { padding: 5rem 0; }
    .docs-tabs { flex-wrap: wrap; }
    .pricing-card.featured { transform: none; }
    .pricing-card.featured:hover { transform: translateY(-4px); }
}