:root {
  --primary: #123a6b;
  --primary-dark: #0b2547;
  --accent: #c99a2e;
  --bg: #f4f6f9;
  --card-bg: #ffffff;
  --text: #1e2430;
  --text-muted: #5a6472;
  --border: #e1e5eb;
  --success: #1f8a4c;
  --success-bg: #e6f6ec;
  --danger: #c0392b;
  --danger-bg: #fbeceb;
  --pending: #b8860b;
  --pending-bg: #fbf3de;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(18, 58, 107, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Sarabun", "Segoe UI", Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 16px 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
}
.brand .badge-logo {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 1.1rem;
}
.site-nav a {
  color: #f0f3f8;
  margin-left: 18px;
  font-weight: 500;
}
.site-nav a:hover { color: var(--accent); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary), #1c4c8c);
  color: #fff;
  padding: 56px 0 64px;
}
.hero h1 { font-size: 2rem; margin: 0 0 12px; }
.hero p { font-size: 1.05rem; color: #dce6f5; max-width: 720px; }
.hero .actions { margin-top: 24px; display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 8px;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 1rem;
}
.btn-accent { background: var(--accent); color: var(--primary-dark); }
.btn-accent:hover { background: #dcae3d; text-decoration: none; }
.btn-outline { background: transparent; border-color: #fff; color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.12); text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); text-decoration: none; }
.btn-sm { padding: 7px 14px; font-size: .88rem; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }

/* Sections */
.section { padding: 48px 0; }
.section-title { font-size: 1.5rem; margin: 0 0 6px; color: var(--primary-dark); }
.section-sub { color: var(--text-muted); margin-bottom: 28px; }

/* Stat cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  margin-bottom: 8px;
}
.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  border-top: 4px solid var(--accent);
}
.stat-card .num { font-size: 2rem; font-weight: 800; color: var(--primary-dark); }
.stat-card .label { color: var(--text-muted); font-size: .92rem; margin-top: 4px; }

.two-col {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
}
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } }

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.card h3 { margin-top: 0; color: var(--primary-dark); }

.major-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.major-bar-row .name { width: 160px; flex-shrink: 0; font-size: .92rem; }
.major-bar-track { flex: 1; background: #eef1f6; border-radius: 6px; height: 12px; overflow: hidden; }
.major-bar-fill { background: var(--accent); height: 100%; border-radius: 6px; }
.major-bar-row .count { width: 30px; text-align: right; font-weight: 700; color: var(--primary-dark); }

.approved-list { list-style: none; margin: 0; padding: 0; }
.approved-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: .94rem;
}
.approved-list li:last-child { border-bottom: none; }
.approved-list .muted { color: var(--text-muted); font-size: .85rem; }

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 700;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-pending { background: var(--pending-bg); color: var(--pending); }

/* Forms */
.form-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
}
fieldset {
  border: none;
  border-top: 3px solid var(--accent);
  padding: 20px 0 4px;
  margin: 0 0 24px;
}
legend {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary-dark);
  padding: 0 4px 0 0;
}
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
label { font-weight: 600; font-size: .92rem; }
label .req { color: var(--danger); }
input[type=text], input[type=email], input[type=tel], input[type=password],
input[type=date], input[type=search], select, textarea {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: .95rem;
  font-family: inherit;
  width: 100%;
}
textarea { resize: vertical; min-height: 80px; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(18,58,107,.12);
}
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px 16px;
}
.checkbox-item { display: flex; align-items: flex-start; gap: 8px; font-weight: 400; font-size: .92rem; }
.checkbox-item input { width: auto; margin-top: 3px; }
.consent-box { background: #f7f9fc; border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 20px; }
.hint { color: var(--text-muted); font-size: .85rem; margin-top: 4px; }

.alert { padding: 14px 18px; border-radius: 8px; margin-bottom: 20px; font-size: .93rem; }
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid #bfe6cd; }
.alert-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid #f0c4bf; }
.alert-info { background: #e8f0fc; color: var(--primary); border: 1px solid #c6d9f2; }
.alert ul { margin: 6px 0 0; padding-left: 20px; }

.ref-box {
  background: var(--primary-dark);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  margin-bottom: 24px;
}
.ref-box .code { font-size: 2rem; font-weight: 800; letter-spacing: 2px; color: var(--accent); margin: 8px 0; }

/* Tables */
.table-wrap { overflow-x: auto; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: .9rem; }
th { background: #f0f3f8; color: var(--primary-dark); font-weight: 700; white-space: nowrap; }
tr:hover td { background: #fafbfd; }

.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.filters select, .filters input { padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; }

.pagination { display: flex; gap: 6px; margin-top: 18px; flex-wrap: wrap; }
.pagination a, .pagination span {
  padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border);
  font-size: .88rem; color: var(--text);
}
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: #cdd8ea;
  padding: 28px 0;
  margin-top: 48px;
  font-size: .88rem;
}
.site-footer a { color: #fff; }

/* Admin layout */
.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 230px;
  background: var(--primary-dark);
  color: #fff;
  flex-shrink: 0;
  padding: 20px 0;
}
.admin-sidebar .brand { padding: 0 20px 20px; font-size: .95rem; border-bottom: 1px solid rgba(255,255,255,.12); margin-bottom: 10px;}
.admin-sidebar nav a {
  display: block;
  padding: 11px 20px;
  color: #d7e0f0;
  font-size: .92rem;
  font-weight: 500;
}
.admin-sidebar nav a:hover, .admin-sidebar nav a.active {
  background: rgba(255,255,255,.08);
  color: #fff;
  text-decoration: none;
  border-left: 3px solid var(--accent);
}
.admin-main { flex: 1; min-width: 0; }
.admin-topbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.admin-content { padding: 24px; }
.admin-topbar .who { font-size: .9rem; color: var(--text-muted); }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 20px;
}
.login-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.login-card h2 { margin-top: 0; color: var(--primary-dark); text-align: center; }

.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px 24px; margin-bottom: 18px; }
.detail-grid .item .label { font-size: .78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .03em; }
.detail-grid .item .value { font-size: .96rem; font-weight: 600; }

.note-item { border-bottom: 1px solid var(--border); padding: 12px 0; }
.note-item:last-child { border-bottom: none; }
.note-item .meta { font-size: .78rem; color: var(--text-muted); margin-top: 4px; }

@media (max-width: 720px) {
  .admin-shell { flex-direction: column; }
  .admin-sidebar { width: 100%; }
}