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

:root {
  --blue: #005bbb;
  --yellow: #ffd700;
  --cream: #fdf8f0;
  --dark: #1a1a2e;
  --muted: #555;
  --radius: 10px;
}

body {
  font-family: Georgia, 'Times New Roman', serif;
  background: var(--cream);
  color: var(--dark);
  line-height: 1.7;
}

/* ── Nav ── */
header {
  background: var(--blue);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 4px solid var(--yellow);
}

header .logo {
  color: var(--yellow);
  font-size: 1.4rem;
  font-weight: bold;
  padding: 1rem 0;
  text-decoration: none;
  letter-spacing: 0.03em;
}

nav a {
  color: #fff;
  text-decoration: none;
  padding: 1rem 0.9rem;
  display: inline-block;
  font-size: 0.95rem;
  transition: color 0.2s;
}

nav a:hover, nav a.active {
  color: var(--yellow);
}

/* ── Hero ── */
.hero {
  background: linear-gradient(160deg, var(--blue) 50%, var(--yellow) 50%);
  padding: 5rem 2rem 4rem;
  text-align: center;
  color: #fff;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  text-shadow: 0 2px 6px rgba(0,0,0,.3);
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.15rem;
  max-width: 560px;
  margin: 0 auto 2rem;
  text-shadow: 0 1px 3px rgba(0,0,0,.25);
}

.hero a.btn {
  background: var(--yellow);
  color: var(--dark);
  padding: 0.7rem 2rem;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: opacity 0.2s;
}

.hero a.btn:hover { opacity: 0.85; }

/* ── Page hero (sub-pages) ── */
.page-hero {
  background: var(--blue);
  color: #fff;
  padding: 3.5rem 2rem 2.5rem;
  text-align: center;
  border-bottom: 4px solid var(--yellow);
}

.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
.page-hero p  { margin-top: 0.6rem; opacity: 0.88; font-size: 1.05rem; }

/* ── Content ── */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  box-shadow: 0 2px 10px rgba(0,0,0,.08);
  border-top: 4px solid var(--yellow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0,0,0,.12);
}

.card-icon { font-size: 2.2rem; margin-bottom: 0.7rem; }
.card h2   { font-size: 1.15rem; margin-bottom: 0.5rem; color: var(--blue); }
.card p    { font-size: 0.92rem; color: var(--muted); }

/* ── Nav cards (index → sub-pages) ── */
.nav-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.nav-card {
  display: block;
  text-decoration: none;
  background: var(--blue);
  color: #fff;
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: background 0.2s, transform 0.2s;
}

.nav-card:hover { background: #004499; transform: translateY(-3px); }
.nav-card .icon { font-size: 2.5rem; display: block; margin-bottom: 0.6rem; }
.nav-card span  { font-size: 1.1rem; font-weight: bold; }

/* ── Sections inside sub-pages ── */
.section {
  margin-top: 2.5rem;
}

.section h2 {
  font-size: 1.5rem;
  color: var(--blue);
  border-bottom: 2px solid var(--yellow);
  padding-bottom: 0.3rem;
  margin-bottom: 1rem;
}

.section p, .section li {
  color: var(--muted);
  font-size: 0.97rem;
}

.section ul {
  padding-left: 1.3rem;
}

.section ul li { margin-bottom: 0.4rem; }

.highlight-box {
  background: #fff;
  border-left: 5px solid var(--yellow);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.2rem 1.5rem;
  margin-top: 1.2rem;
  box-shadow: 0 2px 8px rgba(0,0,0,.07);
  color: var(--muted);
  font-size: 0.95rem;
}

/* ── Footer ── */
footer {
  background: var(--dark);
  color: #aaa;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
}

footer span { color: var(--yellow); }