/* ============================================
   NEXUS Landing Page - CSS Moderno
   ============================================ */

/* Variables */
:root {
    /* Colores principales */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-secondary: #8b5cf6;
    --color-accent: #06b6d4;

    /* Fondos */
    --color-bg: #030712;
    --color-bg-secondary: #0f172a;
    --color-surface: #1e293b;
    --color-surface-light: #334155;

    /* Texto */
    --color-text: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    /* Bordes */
    --color-border: #1e293b;
    --color-border-light: #334155;

    /* Estados */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* Plan badges */
    --color-lite: #10b981;
    --color-vertical: #6366f1;

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
    --gradient-text: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15), transparent 70%);

    /* Tipografia */
    --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;
    --font-size-5xl: 3.5rem;

    /* Espaciado */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;

    /* Bordes */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Layout */
    --container-width: 1280px;
    --header-height: 72px;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.logo-svg {
    width: 120px;
    height: 40px;
    color: var(--color-text);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
    border-radius: var(--radius-xl);
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

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

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

.btn-glass {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + var(--spacing-16)) 0 var(--spacing-16);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.3), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.15), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(6, 182, 212, 0.1), transparent);
    pointer-events: none;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
}

.hero-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-6);
}

.hero h1 {
    font-size: clamp(var(--font-size-3xl), 8vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-6);
}

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

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-10);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-12);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-12);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ============================================
   Sections Common
   ============================================ */
section {
    padding: var(--spacing-24) 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-16);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-4);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-4);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background: var(--color-bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.feature-card {
    position: relative;
    padding: var(--spacing-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: transparent;
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-4);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

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

/* ============================================
   Planes Section
   ============================================ */
.planes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-8);
    max-width: 900px;
    margin: 0 auto;
}

.plan-card {
    position: relative;
    padding: var(--spacing-10);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.plan-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    transform: scale(1.02);
}

.plan-popular {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-1) var(--spacing-4);
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: white;
}

.plan-badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-4);
}

.plan-badge.lite {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-lite);
}

.plan-badge.vertical {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-vertical);
}

.plan-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-3);
}

.plan-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.6;
}

.plan-features {
    margin-bottom: var(--spacing-8);
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
}

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

.plan-features svg {
    flex-shrink: 0;
    color: var(--color-success);
}

/* ============================================
   Demo Section
   ============================================ */
.demo {
    background: var(--color-bg-secondary);
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-6);
    max-width: 800px;
    margin: 0 auto;
}

.demo-card {
    padding: var(--spacing-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
}

.demo-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-4);
}

.demo-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.demo-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-6);
}

.demo-credentials {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    text-align: left;
}

.credential {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-2) 0;
}

.credential:not(:last-child) {
    border-bottom: 1px solid var(--color-border);
}

.credential-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.credential code {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: var(--font-size-sm);
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
}

.credential a {
    color: var(--color-primary-light);
    font-size: var(--font-size-sm);
}

/* ============================================
   Docs Section
   ============================================ */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-4);
}

.doc-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    padding: var(--spacing-5);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.doc-card:hover {
    border-color: var(--color-primary);
    transform: translateX(4px);
}

.doc-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.doc-card h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.doc-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-8);
    padding-bottom: var(--spacing-8);
    border-bottom: 1px solid var(--color-border);
}

.footer-logo {
    width: 100px;
    height: 35px;
    color: var(--color-text);
}

.footer-brand p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-2);
}

.footer-meta p {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

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

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

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .nav {
        display: none;
    }

    .header .btn {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-24: 4rem;
        --spacing-16: 3rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-6);
    }

    .planes-grid {
        grid-template-columns: 1fr;
    }

    .plan-card.featured {
        transform: none;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-4);
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: var(--shadow-md), 0 0 20px rgba(99, 102, 241, 0.2); }
    50% { box-shadow: var(--shadow-lg), 0 0 40px rgba(99, 102, 241, 0.4); }
}

.btn-primary {
    animation: pulse-glow 3s ease-in-out infinite;
}

/* Scroll animations */
.feature-card,
.plan-card,
.demo-card,
.doc-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

/* Stagger animation delays */
.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }
.feature-card:nth-child(7) { animation-delay: 0.7s; }
.feature-card:nth-child(8) { animation-delay: 0.8s; }

/* ============================================
   Audience Tabs Section
   ============================================ */
.audience-section {
    background: var(--color-bg-secondary);
}

.audience-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-10);
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-6) var(--spacing-8);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    min-width: 160px;
    color: var(--color-text);
}

.tab-btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}

.tab-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    color: var(--color-primary-light);
}

.tab-btn.active .tab-icon {
    background: var(--gradient-primary);
    color: white;
}

.tab-text {
    font-size: var(--font-size-base);
    font-weight: 600;
}

.tab-desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.audience-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-10);
    padding: var(--spacing-10);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
}

.audience-card.investor,
.audience-card.developer {
    grid-template-columns: 1.2fr 0.8fr;
}

.audience-content h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.audience-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.benefits-list {
    margin-bottom: var(--spacing-6);
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

.benefits-list svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.social-proof {
    font-style: italic;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-6);
    padding-left: var(--spacing-4);
    border-left: 3px solid var(--color-primary);
}

/* Investor specific */
.metric-highlight {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    text-align: center;
    margin-bottom: var(--spacing-6);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.metric-highlight .metric-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-2);
}

.metric-highlight .metric-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.audience-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--color-text);
}

.differentiators-list {
    margin-bottom: var(--spacing-6);
}

.differentiators-list li {
    padding: var(--spacing-3) 0;
    padding-left: var(--spacing-4);
    border-left: 2px solid var(--color-primary);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
}

.metrics-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
}

.metric-badge {
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-primary-light);
}

.tech-stack-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
}

.tech-stack-box .tech-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.tech-stack-box code {
    background: var(--color-bg);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: 'SF Mono', Monaco, monospace;
    color: var(--color-accent);
}

.vision-quote {
    font-style: italic;
    color: var(--color-text-secondary);
    border-left: 3px solid var(--color-secondary);
    padding-left: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

/* Developer specific */
.architecture-desc {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.api-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
}

.api-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.api-icon {
    color: var(--color-warning);
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
}

.tech-badge {
    padding: var(--spacing-1) var(--spacing-3);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-primary-light);
}

.integrations {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-6);
}

.integrations-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.integration-badge {
    padding: var(--spacing-1) var(--spacing-3);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-accent);
}

.code-preview {
    background: #0d1117;
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    overflow-x: auto;
    border: 1px solid var(--color-border);
}

.code-preview code {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: var(--font-size-sm);
    color: #58a6ff;
    line-height: 1.6;
    white-space: pre;
}

/* Mockup visual */
.audience-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.mockup-card {
    width: 100%;
    max-width: 380px;
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border);
}

.mockup-header {
    display: flex;
    gap: 8px;
    padding: var(--spacing-4);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.mockup-dot.red { background: #ef4444; }
.mockup-dot.yellow { background: #f59e0b; }
.mockup-dot.green { background: #10b981; }

.mockup-content {
    padding: var(--spacing-6);
}

.mockup-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-3);
    border-radius: var(--radius-lg);
}

.mockup-stat.green {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.mockup-stat.blue {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

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

.mockup-stat .stat-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.mockup-stat.green .stat-value { color: var(--color-success); }
.mockup-stat.blue .stat-value { color: var(--color-primary-light); }

.mockup-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-2);
    height: 80px;
    padding: var(--spacing-4);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-4);
}

.chart-bar {
    flex: 1;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    min-height: 10px;
}

/* ============================================
   Demo Section Updated
   ============================================ */
.demos {
    background: var(--color-bg);
}

.demo-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-10);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
    max-width: 1200px;
    margin: 0 auto;
}

.demo-card {
    padding: var(--spacing-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

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

.demo-card.hidden {
    display: none;
}

.demo-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
}

.demo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    color: var(--color-primary-light);
}

.plan-badge.pitch {
    background: rgba(139, 92, 246, 0.15);
    color: var(--color-secondary);
}

.plan-badge.dev {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-accent);
}

.demo-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.demo-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-4);
    line-height: 1.6;
}

.demo-features {
    margin-bottom: var(--spacing-4);
}

.demo-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--spacing-1) 0;
}

.demo-features svg {
    color: var(--color-success);
    flex-shrink: 0;
}

/* ============================================
   Responsive for Audience Section
   ============================================ */
@media (max-width: 1024px) {
    .audience-card {
        grid-template-columns: 1fr;
    }

    .audience-card.investor,
    .audience-card.developer {
        grid-template-columns: 1fr;
    }

    .audience-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .audience-tabs {
        flex-direction: column;
        align-items: stretch;
    }

    .tab-btn {
        flex-direction: row;
        justify-content: flex-start;
        min-width: auto;
    }

    .api-features {
        grid-template-columns: 1fr;
    }

    .mockup-card {
        max-width: 100%;
    }
}