:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --accent: #2f6fed;
  --accent-2: #0ca678;
  --text: #1f2933;
  --muted: #6b7280;
  --danger: #e11d48;
  --topbar-bg: linear-gradient(90deg, #f7f9ff, #e7eeff);
  --topbar-fg: #0f172a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--topbar-bg);
  color: var(--topbar-fg);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 10px 20px rgba(0,0,0,0.12);
  border-bottom: 1px solid rgba(12,18,36,0.05);
}
.topbar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 8px;
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(12,18,36,0.06);
  border-radius: 14px;
}
.topbar nav a {
  color: #0b1224;
  font-weight: 600;
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 10px;
  position: relative;
  transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.topbar nav a.active {
  background: rgba(47, 111, 237, 0.12);
  color: #0b1224;
  box-shadow: inset 0 0 0 1px rgba(47, 111, 237, 0.2);
}
.topbar nav a::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 6px;
  height: 2px;
  background: transparent;
  border-radius: 999px;
  transition: background 0.2s ease;
}
.topbar nav a:hover {
  color: #0b1224;
  background: rgba(255,255,255,0.28);
  transform: translateY(-1px);
}
.topbar nav a:hover::after {
  background: var(--accent);
}
.nav-checkbox { display: none; }
.nav-toggle {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.24);
  color: #0b1224;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}
.nav-toggle:hover { background: rgba(255,255,255,0.32); transform: translateY(-1px); }
.nav-checkbox:checked + .nav-toggle {
  background: rgba(255,255,255,0.4);
  transform: translateY(-1px);
}
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-title { font-weight: 800; letter-spacing: 0.5px; font-size: 16px; }
.brand-sub { font-size: 13px; color: #0b1224; opacity: 0.75; }
.user-chip { background: rgba(255,255,255,0.22); padding: 8px 12px; border-radius: 12px; display: flex; flex-direction: column; gap: 4px; align-items: flex-end; }
.user-actions { display: flex; gap: 8px; font-size: 12px; }
.user-actions a { color: #0b1224; }

.page { padding: 20px; max-width: 1100px; margin: 0 auto; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.card { background: var(--card); padding: 16px; border-radius: 12px; box-shadow: 0 6px 16px rgba(0,0,0,0.04); }
.card h2 { margin: 6px 0 0; }
.card.highlight { border-left: 4px solid var(--danger); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; margin-top: 16px; }
.panel { background: var(--card); padding: 16px; border-radius: 12px; box-shadow: 0 6px 16px rgba(0,0,0,0.05); }

.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 8px; }
th, td { padding: 10px; border-bottom: 1px solid #e5e7eb; text-align: left; }
th { text-transform: uppercase; font-size: 12px; letter-spacing: 0.5px; color: var(--muted); }
tbody tr:nth-child(even) { background: #f8fafc; }
.hidden { display: none; }

.training-matrix { width: 100%; table-layout: auto; }
.training-matrix th.training-col { white-space: nowrap; min-width: 150px; }
.training-matrix th,
.training-matrix td.training-cell { white-space: nowrap; }
.training-matrix td.training-cell .badge,
.training-matrix td.training-cell .badge-detail {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.cell-overdue { background: transparent; }
.cell-due_soon { background: transparent; }
.cell-not_required { background: transparent; }

form { width: 100%; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.form-inline { display: flex; gap: 8px; align-items: center; }
.form-grid.inline { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.form-vertical { display: flex; flex-direction: column; gap: 8px; }
.form-stack { display: flex; flex-direction: column; gap: 10px; }
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.filter-bar select,
.filter-bar input[type="text"] {
  height: 42px;
  display: block;
}
input, select, textarea, button {
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  font-size: 14px;
}
textarea { resize: vertical; }
button, .btn {
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  text-align: center;
  padding: 10px 14px;
  border-radius: 8px;
  font-weight: 600;
}
.btn { display: inline-block; }
.btn.danger, button.danger { background: var(--danger); }
button:hover, .btn:hover { filter: brightness(0.95); }

.badge { padding: 6px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; color: #fff; }
.badge.ok { background: var(--accent-2); }
.badge.due_soon { background: #f59e0b; }
.badge.overdue { background: var(--danger); }
.badge.not-required { background: var(--accent-2); }
.badge-detail { border: none; cursor: pointer; }

.alert { padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
.alert-error { background: #fee2e2; color: #991b1b; }

.checkbox-group { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 6px; margin: 10px 0; }

.login-page { min-height: 100vh; margin: 0; background: linear-gradient(135deg, #f5f7fb, #eef2ff); display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-hero { width: 100%; max-width: 420px; }
.login-card { background: #ffffff; border: 1px solid #e5e7eb; padding: 24px; border-radius: 16px; box-shadow: 0 16px 40px rgba(0,0,0,0.08); color: #1f2933; }
.login-brand { margin-bottom: 12px; }
.login-title { display: block; font-size: 22px; font-weight: 800; letter-spacing: 0.6px; color: #0b132b; }
.login-sub { display: block; font-size: 14px; color: #4b5563; margin-top: 2px; }
.login-card label { color: #1f2933; }
.login-card input { background: #f8fafc; color: #111827; border: 1px solid #d1d5db; }
.login-card button { width: 100%; margin-top: 6px; }
.login-card .alert-error { background: #fee2e2; color: #991b1b; }

@media (max-width: 1100px) {
  .page { padding: 16px; }
  .cards { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
  .grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
}

@media (max-width: 900px) {
  .topbar { align-items: flex-start; flex-wrap: wrap; gap: 10px; }
  .nav-toggle { display: inline-flex; }
  .topbar nav {
    order: 3;
    width: 100%;
    display: none;
    flex-direction: column;
    gap: 8px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 14px;
    padding: 10px 12px;
  }
  .nav-checkbox:checked + .nav-toggle + nav { display: flex; }
  .topbar nav a { width: 100%; padding: 10px 12px; }
  .user-chip { order: 2; width: 100%; align-items: flex-start; }
  .page { padding: 14px; }
  table { font-size: 13px; }
  th, td { padding: 8px; }
  .table-wrapper { margin: 0 -6px; padding: 0 6px; }
}

@media (max-width: 720px) {
  .page { padding: 12px; }
  .form-inline { flex-direction: column; align-items: stretch; }
  .form-inline > * { width: 100%; }
  .form-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .cards { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
}

@media (max-width: 540px) {
  .topbar { padding: 12px; }
  .brand-title { font-size: 15px; }
  .brand-sub { font-size: 12px; }
  .user-chip { gap: 6px; }
  .table-wrapper { margin: 0 -12px; padding: 0 12px; }
  th, td { padding: 8px 6px; }
  .card { padding: 14px; }
  .login-card { padding: 20px; }
}

.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.45); display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal.hidden { display: none; }
.modal-content { background: #fff; padding: 20px; border-radius: 12px; max-width: 520px; width: 100%; position: relative; box-shadow: 0 10px 30px rgba(0,0,0,0.15); }
.modal-close { position: absolute; top: 10px; right: 10px; border: none; background: transparent; font-size: 20px; cursor: pointer; }
.muted { color: var(--muted); }