:root {
  --navy: #0b2545;
  --navy-dark: #081a33;
  --gold: #c99a3b;
  --bg-soft: #f6f7fb;
  --text-body: #2a2f3a;
}

body {
  font-family: 'Noto Sans Thai', system-ui, sans-serif;
  color: var(--text-body);
  background: var(--bg-soft);
  line-height: 1.8;
}

/* Navbar */
.navbar { background: var(--navy); }
.navbar-brand { font-weight: 600; }
.navbar-nav .nav-link { color: rgba(255,255,255,.8); font-weight: 500; padding: .5rem 1rem; }
.navbar-nav .nav-link:hover { color: #fff; }
.navbar-nav .nav-link.active { color: var(--gold); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  padding: 4.5rem 0 5rem;
}
.hero h1 { font-weight: 700; }
.hero .lead { color: rgba(255,255,255,.85); }
.badge-gold { background: var(--gold); color: var(--navy-dark); font-weight: 600; }

/* Cards */
.topic-card {
  background: #fff;
  border-radius: 14px;
  border: 1px solid #e7e9f0;
  padding: 1.75rem;
  height: 100%;
  transition: transform .15s ease, box-shadow .15s ease;
}
.topic-card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(11,37,69,.08); }
.topic-card .icon-wrap {
  width: 52px; height: 52px; border-radius: 12px;
  background: rgba(11,37,69,.08); color: var(--navy);
  display: flex; align-items: center; justify-content: center; font-size: 1.4rem;
  margin-bottom: 1rem;
}

/* Page content wrapper */
.page-header { background: var(--navy); color: #fff; padding: 3rem 0; }
.content-wrap {
  background: #fff;
  border-radius: 14px;
  border: 1px solid #e7e9f0;
  padding: 2.25rem;
}
.content-h2 { color: var(--navy); font-weight: 700; font-size: 1.4rem; margin: 1.75rem 0 1rem; }
.content-h2:first-child { margin-top: 0; }
.content-h3 { color: var(--navy); font-weight: 600; font-size: 1.15rem; margin: 1.25rem 0 .75rem; }
.content-list { padding-left: 1.25rem; }
.content-list li { margin-bottom: .5rem; }
.content-tip {
  background: #eef4ff; border-left: 4px solid #3b6fd1;
  padding: .9rem 1.1rem; border-radius: 8px; margin: 1rem 0; font-size: .96rem;
}
.content-alert.alert-warning {
  border-left: 4px solid #c99a3b; border-radius: 8px; font-size: .96rem;
}

/* Checklist page */
.checklist-item {
  background: #fff; border: 1px solid #e7e9f0; border-radius: 12px;
  padding: 1.1rem 1.25rem; display: flex; gap: .75rem; align-items: flex-start; margin-bottom: .75rem;
}
.checklist-item i { color: #1d9e75; font-size: 1.2rem; margin-top: 2px; }

/* Footer */
.site-footer { background: var(--navy-dark); color: rgba(255,255,255,.75); }
.footer-heading { color: #fff; font-weight: 600; margin-bottom: 1rem; }
.footer-link { color: rgba(255,255,255,.7); text-decoration: none; }
.footer-link:hover { color: var(--gold); }

a { color: #1a4fa0; }
a:hover { color: var(--navy); }