/* ═══════════════════════════════════════
   FAUNARIS AI — Design System
   ═══════════════════════════════════════ */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-card: #16161f;
    --bg-card-hover: #1c1c28;
    --border: #232333;
    --border-light: #2a2a3d;
    --text-primary: #e8e8f0;
    --text-secondary: #9090a8;
    --text-muted: #606078;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --accent-glow-strong: rgba(99, 102, 241, 0.3);
    --teal: #2dd4bf;
    --teal-glow: rgba(45, 212, 191, 0.15);
    --amber: #f59e0b;
    --amber-glow: rgba(245, 158, 11, 0.12);
    --font-display: 'Instrument Serif', Georgia, serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --max-width: 1200px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

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

/* Noise texture overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
}

a { color: inherit; }

/* ── Navigation ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 0.9rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--text-primary);
}

.nav-logo img {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    object-fit: cover;
}

.nav-logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 0.25rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.01em;
    padding: 0.5rem 0.9rem;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    background: rgba(255,255,255,0.04);
}

.nav-cta {
    background: var(--accent) !important;
    color: #fff !important;
    font-weight: 500 !important;
    transition: all 0.2s !important;
}

.nav-cta:hover {
    background: var(--accent-light) !important;
    box-shadow: 0 0 20px var(--accent-glow-strong) !important;
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ── Page layout ── */
.page-top { padding-top: 5rem; }
section { padding: 5rem 2rem; }
.container { max-width: var(--max-width); margin: 0 auto; }

/* ── Typography ── */
.section-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 0.75rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.section-desc {
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 3rem;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.6rem;
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 0.92rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.25s ease;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 0 30px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-light);
    box-shadow: 0 0 40px var(--accent-glow-strong);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    border-color: var(--text-muted);
    background: var(--bg-card);
}

/* ── Cards ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.card:hover {
    border-color: var(--border-light);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

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

/* ── Tags / Pills ── */
.tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.22rem 0.6rem;
    border-radius: 6px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    color: var(--text-muted);
    display: inline-block;
}

.tag-accent {
    background: var(--accent-glow);
    border-color: rgba(99, 102, 241, 0.2);
    color: var(--accent-light);
}

.metric-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.75rem;
    padding: 0.3rem 0.7rem;
    background: rgba(45, 212, 191, 0.08);
    border: 1px solid rgba(45, 212, 191, 0.15);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--teal);
}

/* ── Footer ── */
footer {
    border-top: 1px solid var(--border);
    padding: 2.5rem 2rem;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.footer-left img {
    width: 28px;
    height: 28px;
    border-radius: 7px;
}

.footer-left span {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.2s;
}

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

/* ── Scroll reveal ── */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Animations ── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* ── Glows ── */
.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
}

/* ── Mobile ── */
@media (max-width: 768px) {
    nav { padding: 0.75rem 1.25rem; }
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: rgba(10, 10, 15, 0.97);
        backdrop-filter: blur(24px);
        padding: 1.25rem;
        border-bottom: 1px solid var(--border);
        gap: 0.25rem;
    }

    .nav-links.open a {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }

    section { padding: 3.5rem 1.25rem; }
    .page-top { padding-top: 4.5rem; }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}