:root {
  color-scheme: light;
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --border: #d7dae0;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #1a56db;
  --primary-hover: #1544ab;
  --danger: #b3261e;
  --danger-bg: #fbeaea;
  --success: #14532d;
  --success-bg: #e8f5ea;
  --warning: #7a4b00;
  --warning-bg: #fdf1dc;
  --info: #1e3a5f;
  --info-bg: #e6eef8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Auth pages (login, 2FA): centered narrow card. */
body.auth {
  display: flex;
  align-items: center;
  justify-content: center;
}

body.auth .page {
  width: 100%;
  max-width: 420px;
  padding: 24px;
}

.auth-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
}

/* Authenticated app pages: full-width sidebar layout. */
body.app .page {
  width: 100%;
  max-width: none;
  padding: 0;
}

body.app .flashes {
  margin: 16px 32px 0;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
}

.app-brand {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 24px;
  padding: 0 8px;
}

.app-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.app-nav-link {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
}

.app-nav-link:hover { background: var(--bg); }

.app-nav-link.active {
  background: var(--primary);
  color: #fff;
}

.app-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 16px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
}

/* Profile menu — <details>/<summary>, no JavaScript. Native <details>
   doesn't auto-close on an outside click (only re-toggling <summary>
   does); accepted deliberately rather than adding JS just for that,
   consistent with this app's near-total avoidance of it. */
.profile-menu {
  position: relative;
}

.profile-menu-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

.profile-menu-trigger::-webkit-details-marker { display: none; }
.profile-menu-trigger::marker { content: ""; }

.profile-menu-trigger::after {
  content: "▾";
  font-size: 0.7rem;
  color: var(--muted);
}

.profile-menu-trigger:hover,
.profile-menu[open] .profile-menu-trigger {
  background: var(--bg);
}

.profile-menu-panel {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 180px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  padding: 6px;
  z-index: 20;
}

.profile-menu-item {
  display: block;
  width: 100%;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 400;
  font-family: inherit;
  color: var(--text);
  text-decoration: none;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
}

.profile-menu-item:hover { background: var(--bg); }

.app-content {
  padding: 32px;
  flex: 1;
}

.btn-link {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

.training-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.training-table th, .training-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.training-table th {
  background: var(--bg);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--muted);
}

.training-table tr:last-child td { border-bottom: none; }
.training-table tr.overdue td { color: var(--danger); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 8px;
}

.badge-overdue {
  background: var(--danger-bg);
  color: var(--danger);
}

/* CSS-only tabs (Outstanding / Completed) — radio inputs + labels,
   no JavaScript. Inputs must come before the tab-bar/panels in the DOM
   for the ~ sibling selectors below to work. */
.tabs input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.tab-bar {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

.tab-label {
  display: inline-block;
  padding: 10px 16px;
  margin: 0 0 -1px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  cursor: pointer;
}

.tab-label:hover { color: var(--text); }

.tab-panel { display: none; }

#tab-outstanding:checked ~ .tab-panel.panel-outstanding { display: block; }
#tab-completed:checked ~ .tab-panel.panel-completed { display: block; }

#tab-outstanding:checked ~ .tab-bar label[for="tab-outstanding"],
#tab-completed:checked ~ .tab-bar label[for="tab-completed"] {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

#tab-outstanding:focus-visible ~ .tab-bar label[for="tab-outstanding"],
#tab-completed:focus-visible ~ .tab-bar label[for="tab-completed"] {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@media (max-width: 720px) {
  .app-shell { flex-direction: column; }
  .app-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .app-nav { flex-direction: row; flex-wrap: wrap; }
  .app-topbar, .app-content { padding-left: 16px; padding-right: 16px; }
  body.app .flashes { margin-left: 16px; margin-right: 16px; }
}

h1 {
  font-size: 1.4rem;
  margin: 0 0 8px;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0;
}

.field {
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
}

input[type="text"], input[type="password"], input[type="email"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
}

input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

.field-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 4px 0 0;
}

.btn-primary {
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
}

.btn-primary:hover { background: var(--primary-hover); }

.btn-primary:disabled {
  background: var(--border);
  color: var(--muted);
  cursor: not-allowed;
}

.btn-secondary {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  background: transparent;
  color: var(--primary);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.btn-secondary:hover { background: var(--info-bg); }

/* Training sign-off page */
.detail-meta {
  display: flex;
  gap: 32px;
  margin: 16px 0 24px;
}

.detail-meta > div { display: flex; flex-direction: column; }

.detail-meta dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 2px;
}

.detail-meta dd { margin: 0; font-size: 0.95rem; }

.panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 20px;
  max-width: 640px;
}

/* Home page: one small summary card per module the logged-in user has
   access to (see app/main.py) — unlike .panel above, these sit side by
   side in a grid, not stacked full-width. */
.home-panels {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 240px));
  gap: 16px;
}

.home-panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  color: var(--text);
}

.home-panel:hover {
  border-color: var(--primary);
}

.home-panel-count {
  font-size: 2rem;
  font-weight: 600;
  color: var(--primary);
}

.home-panel-label {
  color: var(--muted);
  font-size: 0.9rem;
}

.panel h2 {
  font-size: 1.05rem;
  margin: 0 0 16px;
}

.document-list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.document-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.document-list li:last-child { border-bottom: none; }

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

.checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 400;
  cursor: pointer;
}

.checkbox-field input[type="checkbox"] {
  margin-top: 2px;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.attestation-heading {
  font-weight: 600;
  margin-bottom: 4px;
}

.attestation-text {
  color: var(--muted);
  font-size: 0.9rem;
  border-left: 3px solid var(--border);
  padding-left: 12px;
  margin-bottom: 20px;
}

/* Deliberately hardcoded #fff, not var(--card-bg) — same reasoning as
   the JS baking a white background into the exported PNG itself (see
   signature-pad.js): a signature should look like ink on paper
   regardless of theme, not adopt the dark-mode card color. */
.signature-pad-wrap {
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: #fff;
  display: inline-block;
  margin-bottom: 8px;
}

#signature-pad {
  display: block;
  touch-action: none;
  cursor: crosshair;
}

.signature-preview {
  display: block;
  max-width: 320px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  margin-top: 12px;
}

.signoff-submit-row { margin-top: 20px; }

.signoff-submit-row .btn-primary {
  width: auto;
  padding-left: 28px;
  padding-right: 28px;
}

.flashes {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.flash-danger { background: var(--danger-bg); color: var(--danger); }
.flash-success { background: var(--success-bg); color: var(--success); }
.flash-warning { background: var(--warning-bg); color: var(--warning); }
.flash-info { background: var(--info-bg); color: var(--info); }

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #14161b;
    --card-bg: #1c1f26;
    --border: #2c303a;
    --text: #e6e8ec;
    --muted: #9aa1ad;
    /* Foreground (text) colors, not just their tinted backgrounds —
       the light-mode values (e.g. --success: #14532d, a dark green)
       are tuned for use as text on a light card and become very
       low-contrast, hard-to-read text once the card itself goes dark.
       Every semantic color gets a real dark-mode counterpart here, not
       just the *-bg half of each pair. */
    --primary: #5b8def;
    --primary-hover: #79a4f2;
    --danger: #f87171;
    --danger-bg: #3a1f1e;
    --success: #4ade80;
    --success-bg: #1c3324;
    --warning: #fbbf24;
    --warning-bg: #3a2c10;
    --info: #7dd3fc;
    --info-bg: #16283e;
  }
}