@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,600;0,700;1,400&display=swap');

/* ── Variables ── */
:root {
  --dark:        #0b2323;
  --mid:         #17524f;
  --accent:      #c8a84b;
  --accent-pale: #f5edd8;
  --bg:          #f2f4f0;
  --surface:     #ffffff;
  --text:        #1c2b1c;
  --text-muted:  #546454;
  --nav-w:       220px;
  --r:           14px;
  --sh:          0 4px 28px rgba(0,0,0,.09);
  --sh-lg:       0 10px 48px rgba(0,0,0,.14);
  --ease:        .22s ease;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

/* ── Hero ── */
.hero {
  background: linear-gradient(140deg, var(--dark) 0%, #1e6060 70%, #287070 100%);
  padding: 4.5rem 3rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: white;
  opacity: .05;
  pointer-events: none;
}
.hero::before { width: 480px; height: 480px; top: -160px; right: -100px; }
.hero::after  { width: 280px; height: 280px; bottom: -100px; left: 4%; }

.hero h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -.01em;
  line-height: 1.15;
  position: relative;
}

.hero-bar {
  width: 56px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: 1.25rem auto;
}

.hero .subtitle {
  font-size: .95rem;
  font-weight: 300;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  position: relative;
}

/* ── Shell ── */
.shell {
  display: flex;
  align-items: flex-start;
}

/* ── Sidebar nav ── */
nav {
  width: var(--nav-w);
  flex-shrink: 0;
  background: var(--dark);
  min-height: calc(100vh - 1px);
  padding: 2.5rem 0 3rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.nav-label {
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.28);
  padding: 0 1.5rem;
  margin-bottom: 1.1rem;
}

nav a {
  display: block;
  padding: .72rem 1.5rem;
  color: rgba(255,255,255,.68);
  font-size: .88rem;
  font-weight: 500;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

nav a:hover,
nav a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(200,168,75,.08);
}

/* ── Main ── */
main {
  flex: 1;
  padding: 2.5rem 2rem;
  min-width: 0;
}

/* ── Card ── */
.card {
  background: var(--surface);
  border-radius: var(--r);
  box-shadow: var(--sh);
  padding: 2.75rem;
  max-width: 860px;
}

.card h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 1.6rem;
}

.card p {
  margin-bottom: 1rem;
  color: var(--text);
}

.card a {
  color: var(--mid);
  font-weight: 500;
  text-underline-offset: 3px;
  transition: color var(--ease);
}
.card a:hover { color: var(--accent); }

.card ul,
.card ol {
  margin: 0 0 1rem 1.5rem;
}
.card li { margin-bottom: .4rem; }

/* ── Divider ── */
.section-divider {
  border: none;
  border-top: 1px solid #e5eae5;
  margin: 2.25rem 0;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .hero { padding: 3rem 1.5rem 2.5rem; }

  .shell { flex-direction: column; }

  nav {
    width: 100%;
    height: auto;
    position: static;
    min-height: unset;
    padding: 1rem 0 .5rem;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .nav-label { width: 100%; }

  nav a {
    border-left: none;
    border-bottom: 3px solid transparent;
    padding: .5rem .9rem;
    font-size: .82rem;
  }

  nav a:hover,
  nav a.active {
    border-left-color: transparent;
    border-bottom-color: var(--accent);
  }

  main { padding: 1rem; }
  .card { padding: 1.5rem; }
}