/* Zekron API - Premium AI Platform Stylesheet */
/* Inspired by klingai.com - Dark Modern UI */

: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;
}

/* Typography */
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);
}

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

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

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

.nav {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 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);
}

.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);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

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

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, var(--primary-glow), transparent);
}

.hero-grid {
    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;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.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;
}

.hero-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 h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin-bottom: 1.5rem;
    background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h1 .gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border);
}

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

.hero-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

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

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    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;
    color: var(--primary-light);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
}

/* Model Cards */
.models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.model-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    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, 0.05) 0%, var(--surface) 100%);
}

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

.model-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.375rem 0.75rem;
    background: var(--gradient-1);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.model-icon {
    width: 64px;
    height: 64px;
    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: 32px;
    height: 32px;
    stroke: var(--primary-light);
}

.model-card h3 {
    margin-bottom: 0.75rem;
}

.model-card p {
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    min-height: 60px;
}

.model-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.model-feature {
    padding: 0.375rem 0.75rem;
    background: var(--surface-light);
    border-radius: 9999px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

.model-price-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.model-price-unit {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Technology Section */
.tech-section {
    position: relative;
}

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

.tech-visual {
    position: relative;
    height: 500px;
}

.tech-matrix {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    gap: 4px;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.matrix-cell {
    background: var(--surface-light);
    border-radius: 4px;
    transition: var(--transition);
    animation: matrixPulse 3s infinite;
}

.matrix-cell:nth-child(odd) {
    animation-delay: 0.5s;
}

.matrix-cell:nth-child(3n) {
    background: rgba(99, 102, 241, 0.2);
}

.matrix-cell:nth-child(5n) {
    background: rgba(34, 211, 238, 0.2);
}

.matrix-cell:nth-child(7n) {
    background: rgba(244, 114, 182, 0.2);
}

@keyframes matrixPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.tech-content h2 {
    margin-bottom: 1.5rem;
}

.tech-content > p {
    font-size: 1.125rem;
    margin-bottom: 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 h4 {
    margin-bottom: 0.25rem;
}

.tech-feature p {
    font-size: 0.9375rem;
}

/* About/Company Section */
.about-section {
    background: var(--background-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.about-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

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

.about-card-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-card-icon svg {
    width: 36px;
    height: 36px;
    stroke: var(--primary-light);
}

.about-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.about-card p {
    font-size: 0.9375rem;
}

/* Code Example */
.code-section {
    background: var(--background);
}

.code-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.code-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: -1px;
}

.code-tab {
    padding: 0.75rem 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: var(--radius) var(--radius) 0 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.code-tab.active {
    background: var(--surface-light);
    color: var(--text-primary);
    border-color: var(--border-light);
}

.code-block {
    background: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0 var(--radius-lg) var(--radius-lg) var(--radius-lg);
    padding: 2rem;
    overflow-x: auto;
}

.code-block code {
    font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.code-block .keyword { color: var(--accent-purple); }
.code-block .string { color: var(--success); }
.code-block .property { color: var(--accent); }
.code-block .comment { color: var(--text-muted); }

/* CTA Section */
.cta-section {
    position: relative;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 50% at 50% 50%, var(--primary-glow), transparent);
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    background: var(--background-secondary);
    border-top: 1px solid var(--border);
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-brand {
    max-width: 320px;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.footer-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

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

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

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

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tr:hover {
    background: var(--surface-light);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.badge-info {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-light);
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 1.5rem;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
}

.sidebar-nav {
    margin-top: 2rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    color: var(--text-secondary);
    border-radius: var(--radius);
    margin-bottom: 0.25rem;
    transition: var(--transition);
}

.sidebar-link:hover {
    background: var(--surface-light);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: var(--gradient-1);
    color: white;
}

.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    background: var(--background);
}

.page-header {
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.page-description {
    color: var(--text-secondary);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-change {
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--error);
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    margin: 1rem;
    transform: translateY(20px) scale(0.95);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

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

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Loading */
.loader {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toast */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
}

.toast {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    margin-top: 0.5rem;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

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

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

.pricing-card:hover {
    transform: 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: 600;
    color: white;
}

.pricing-header {
    text-align: center;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.pricing-name {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.pricing-price {
    font-size: 3rem;
    font-weight: 700;
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

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

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

.pricing-features li svg {
    width: 20px;
    height: 20px;
    stroke: var(--success);
    flex-shrink: 0;
}

/* Responsive */
@media (max-width: 1200px) {
    .models-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-visual {
        order: 2;
        height: 400px;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 70px;
    }
    
    .nav {
        display: none;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .models-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Utilities */
.text-center { text-align: center; }
.text-gradient {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }

.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }