/* ═══════════════════════════════════════════
   CHRONOMIC MEDICINE — SHARED STYLES
   ═══════════════════════════════════════════ */
:root {
    --midnight: #060a14;
    --deep: #0c1220;
    --slate: #151d2e;
    --border: rgba(148, 163, 184, 0.07);
    --border-hover: rgba(212, 160, 64, 0.2);
    --muted: #8a96a8;
    --light: #c8d2df;
    --white: #eef1f6;
    --amber: #d4a040;
    --amber-soft: #e8c36e;
    --amber-glow: rgba(212, 160, 64, 0.08);
    --amber-glow-strong: rgba(212, 160, 64, 0.15);
    --serif: 'Cormorant Garamond', Georgia, serif;
    --sans: 'Outfit', system-ui, sans-serif;
    --max-w: 1040px;
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: var(--sans);
    background: var(--midnight);
    color: var(--light);
    line-height: 1.72;
    font-weight: 300;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { color: inherit; }
img { max-width: 100%; display: block; }

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 2px;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) { outline: none; }

/* ─── NAV ─── */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 0 2rem; height: 60px;
    display: flex; justify-content: space-between; align-items: center;
    transition: background 0.5s, box-shadow 0.5s;
}
nav.scrolled {
    background: rgba(6, 10, 20, 0.9);
    backdrop-filter: blur(24px) saturate(1.4);
    box-shadow: 0 1px 0 var(--border);
}
nav.nav-solid {
    background: #060a14;
    box-shadow: 0 1px 0 var(--border);
}
.nav-brand {
    font-family: var(--serif);
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--amber);
    text-decoration: none;
    letter-spacing: 0.01em;
}
.nav-links { display: flex; gap: 1.6rem; list-style: none; }
.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.3s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--amber); }
.nav-toggle {
    display: none; background: none; border: none;
    cursor: pointer; padding: 0.5rem; z-index: 1001;
}
.nav-toggle span {
    display: block; width: 20px; height: 1.5px;
    background: var(--light); margin: 5px 0;
    transition: all 0.3s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -5px); }

/* ─── SECTIONS ─── */
.section {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 6rem 2rem;
}
.page-header {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 8rem 2rem 3rem;
}
.section-label {
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 1.25rem;
    display: flex; align-items: center; gap: 0.75rem;
}
.section-label::before {
    content: '';
    width: 24px; height: 1px;
    background: var(--amber); opacity: 0.4;
}
.section h2,
.page-header h1 {
    font-family: var(--serif);
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    font-weight: 300;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 1rem;
}
.section-intro {
    color: var(--muted);
    font-size: 0.95rem;
    max-width: 600px;
}
.divider {
    max-width: var(--max-w);
    margin: 0 auto; padding: 0 2rem;
}
.divider-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* ─── FOOTER ─── */
footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid var(--border);
}
footer p {
    font-size: 0.72rem;
    color: rgba(138, 150, 168, 0.35);
    line-height: 1.8;
}
footer a { color: var(--amber); text-decoration: none; }
.footer-links {
    display: flex; justify-content: center;
    gap: 1.5rem; margin-bottom: 1rem;
}
.footer-links a {
    font-size: 0.72rem; color: var(--muted);
    text-decoration: none; letter-spacing: 0.06em;
    text-transform: uppercase; transition: color 0.3s;
}
.footer-links a:hover { color: var(--amber); }

/* ─── SCROLL ANIMATIONS ─── */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
}

/* ─── BADGES ─── */
.badge {
    font-size: 0.62rem; letter-spacing: 0.08em;
    text-transform: uppercase; padding: 0.2rem 0.6rem;
    border-radius: 2px; white-space: nowrap; font-weight: 500;
    display: inline-block;
}
.badge-amber { color: var(--amber); background: var(--amber-glow); }
.badge-green { color: #6ee7b7; background: rgba(110, 231, 183, 0.08); }
.badge-muted { color: var(--muted); background: rgba(148, 163, 184, 0.06); border: 1px solid var(--border); }

/* ─── LINK STYLE ─── */
.link-arrow {
    font-size: 0.78rem; color: var(--amber);
    text-decoration: none;
    border-bottom: 1px solid rgba(212, 160, 64, 0.2);
    transition: border-color 0.3s;
    display: inline-block;
}
.link-arrow:hover { border-color: var(--amber); }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
    nav { padding: 0 1.25rem; }
    .nav-links {
        flex-direction: column;
        position: fixed; top: 0; right: 0; bottom: 0;
        width: 260px;
        background: rgba(6, 10, 20, 0.96);
        backdrop-filter: blur(30px);
        padding: 5rem 2rem 2rem; gap: 1.25rem;
        border-left: 1px solid var(--border);
        transform: translateX(100%);
        visibility: hidden;
        transition: transform 0.4s var(--ease), visibility 0s 0.4s;
    }
    .nav-links.open {
        transform: translateX(0);
        visibility: visible;
        transition: transform 0.4s var(--ease), visibility 0s 0s;
    }
    .nav-toggle { display: block; }
    .section { padding: 4rem 1.25rem; }
    .page-header { padding: 6rem 1.25rem 2rem; }
}