/* RevLab — Shared Design System */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0a0a0f;
    --bg-raised: #12121a;
    --bg-card: #1a1a25;
    --text: #e8e8ed;
    --text-muted: #8888a0;
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --green: #10b981;
    --orange: #f59e0b;
    --border: #2a2a3a;
    --pink: #ec4899;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    line-height: 1.15;
}

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

/* ========== NAV ========== */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 28px 32px;
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

.logo span { color: var(--accent); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: color 0.2s;
    position: relative;
}

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

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

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
}

.nav-cta {
    font-size: 0.85rem !important;
    color: var(--text) !important;
    background: var(--accent);
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.nav-cta:hover { opacity: 0.9; }

/* Mobile hamburger */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 1000;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

.mobile-nav .nav-cta {
    font-size: 1.1rem !important;
    padding: 12px 32px;
    margin-top: 16px;
}

/* ========== COMMON SECTIONS ========== */
.section-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 20px;
}

.section-label.accent { color: var(--accent); }
.section-label.green { color: var(--green); }
.section-label.orange { color: var(--orange); }
.section-label.pink { color: var(--pink); }

.divider {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

.divider hr {
    border: none;
    border-top: 1px solid var(--border);
}

/* ========== PAGE HERO ========== */
.page-hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 32px 60px;
}

.page-hero h1 {
    font-size: clamp(2.4rem, 4.5vw, 3.6rem);
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    max-width: 800px;
}

.page-hero h1 em {
    font-style: normal;
    background: linear-gradient(135deg, var(--accent) 0%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-hero p {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 640px;
    line-height: 1.7;
}

/* ========== CARDS ========== */
.card {
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    transition: border-color 0.2s;
}

.card:hover { border-color: rgba(99, 102, 241, 0.4); }

.card-accent-top {
    position: relative;
    overflow: hidden;
}

.card-accent-top::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.card-accent-top.indigo::before { background: var(--accent); }
.card-accent-top.green::before { background: var(--green); }
.card-accent-top.orange::before { background: var(--orange); }
.card-accent-top.pink::before { background: var(--pink); }

/* ========== TAGS ========== */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tags span {
    font-size: 0.75rem;
    padding: 4px 12px;
    border-radius: 100px;
    background: var(--bg-card);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 28px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }

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

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

.btn-ghost {
    background: transparent;
    color: var(--accent);
    padding: 14px 0;
}

.btn-ghost:hover { color: var(--text); }

/* ========== FOOTER ========== */
footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 32px;
    border-top: 1px solid var(--border);
}

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

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

footer .logo { font-size: 1.1rem; }
footer .copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 24px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
    .page-hero {
        padding: 60px 24px 40px;
    }

    nav {
        padding: 20px 24px;
    }

    .nav-links { display: none; }
    .hamburger { display: block; }

    footer {
        padding: 32px 24px;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .page-hero h1 { font-size: 2.2rem; }
}