/* ============================================
   MNEMOS Landing Lite - Styles
   ============================================ */

:root {
    --font-brand: 'Bodoni Moda SC', Georgia, serif;
    --font-ui: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    --bg: #0a0a0a;
    --bg-subtle: #141414;
    --bg-card: #1a1a1a;
    --border: #262626;
    --text: #ffffff;
    --text-muted: #9ca3af;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --accent-purple: #8b5cf6;
    --success: #10b981;
}

@keyframes hue-rotate {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

body {
    animation: hue-rotate 120s linear infinite;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-ui);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   Header
   ============================================ */

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(20, 20, 20, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

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

.logo {
    font-family: var(--font-brand);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.lang-btn {
    background: var(--bg-card);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    border: 1px solid var(--border);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.lang-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

/* ============================================
   Hero
   ============================================ */

.hero {
    padding: 5rem 0 4rem;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.tagline {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1rem;
}

h1 {
    font-family: var(--font-brand);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text) 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 1rem;
    font-weight: 300;
}

.description {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 650px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

/* ============================================
   Stats
   ============================================ */

.stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.stat-icon {
    width: 40px;
    height: 40px;
    color: var(--accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ============================================
   CTA Buttons
   ============================================ */

.cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin: 2rem 0;
}

.btn {
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent);
    color: var(--text);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
}

/* ============================================
   Features
   ============================================ */

.features {
    padding: 4rem 0;
    background: var(--bg-subtle);
}

.section-title {
    font-family: var(--font-brand);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-size: 1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============================================
   Use Cases
   ============================================ */

.use-cases {
    padding: 4rem 0;
}

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

.use-case {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 3px solid var(--accent-purple);
}

.use-case h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.use-case p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ============================================
   Quick Start
   ============================================ */

.quickstart {
    padding: 4rem 0;
    background: var(--bg-subtle);
}

.code-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    max-width: 700px;
    margin: 0 auto;
    overflow-x: auto;
}

.code-block pre {
    font-family: ui-monospace, 'Cascadia Code', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--text-muted);
}

.comment {
    color: var(--success);
}

/* ============================================
   Footer
   ============================================ */

footer {
    background: var(--bg-subtle);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.license {
    background: var(--bg-card);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 0.95rem;
}

.license a {
    color: var(--accent);
    text-decoration: none;
}

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.copyright a {
    color: var(--accent);
    text-decoration: none;
}

/* ============================================
   Mobile Responsive
   ============================================ */

@media (max-width: 768px) {
    .hero {
        padding: 3rem 0 2.5rem;
    }

    .stats {
        gap: 2rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.8rem;
    }

    .features-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .cta {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.25rem;
    }

    .stat-icon {
        width: 32px;
        height: 32px;
    }

    .stats {
        gap: 1.5rem;
    }

    .code-block {
        padding: 1.5rem;
    }
}