/* RealEstateHQ Exam Fast Track — Course 1 */
:root {
  --ink: #0f172a;
  --paper: #f8fafc;
  --accent: #1d4ed8;
  --accent-hover: #1e40af;
  --muted: #64748b;
  --border: #e2e8f0;
  --card: #ffffff;
  --ok: #15803d;
  --warn: #b45309;
  --bad: #b91c1c;
  --soft: #eff6ff;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --disclosure-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
  min-height: 100vh;
}

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

#app { min-height: 100vh; display: flex; flex-direction: column; }

/* —— Layout —— */
.shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-bottom: calc(var(--disclosure-h) + 16px);
}

.topbar {
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  position: sticky;
  top: 0;
  z-index: 40;
}

.topbar-brand {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  color: #fff;
  text-decoration: none;
}
.topbar-brand span { color: #93c5fd; font-weight: 500; }

.topnav {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.topnav a {
  color: #cbd5e1;
  font-size: 0.82rem;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  text-decoration: none;
}
.topnav a:hover, .topnav a.active {
  background: rgba(255,255,255,0.1);
  color: #fff;
  text-decoration: none;
}

.main {
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
  flex: 1;
}

.page-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--card);
}
.page-footer a { color: var(--accent); }

.sticky-disclosure {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: #fffbeb;
  border-top: 1px solid #fcd34d;
  color: #78350f;
  font-size: 0.72rem;
  line-height: 1.4;
  padding: 0.55rem 1rem;
  text-align: center;
}

/* —— Login —— */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: linear-gradient(160deg, var(--paper) 0%, #e2e8f0 100%);
}

.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem;
  width: 100%;
  max-width: 420px;
}

.login-card h1 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
}
.login-card .sub {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

/* —— Forms & buttons —— */
label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="text"], input[type="password"] {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}
input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--ink);
}
.btn-ghost:hover { background: #f1f5f9; }
.btn-danger {
  background: #fef2f2;
  color: var(--bad);
  border-color: #fecaca;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.err {
  color: var(--bad);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}
.hint {
  color: var(--muted);
  font-size: 0.85rem;
}

/* —— Cards & grid —— */
h1.page-title {
  margin: 0 0 0.5rem;
  font-size: 1.6rem;
}
h2 {
  margin: 1.5rem 0 0.75rem;
  font-size: 1.15rem;
}
.lead {
  color: var(--muted);
  margin: 0 0 1.25rem;
  font-size: 0.95rem;
}

.banner {
  background: var(--soft);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}
.banner-warn {
  background: #fffbeb;
  border-color: #fcd34d;
  color: #78350f;
}
.banner-ok {
  background: #f0fdf4;
  border-color: #86efac;
  color: #14532d;
}
.banner-target {
  background: #eff6ff;
  border: 1px solid #93c5fd;
  color: var(--ink);
  font-weight: 600;
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.85rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.card h3 {
  margin: 0;
  font-size: 1rem;
}
.card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  flex: 1;
}
.card .card-actions { margin-top: 0.5rem; }

.topic-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.topic-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.topic-list li:last-child { border-bottom: none; }
.mastery {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: #f1f5f9;
  color: var(--muted);
}
.mastery.ok { background: #dcfce7; color: var(--ok); }
.mastery.weak { background: #fef3c7; color: var(--warn); }

/* —— Quiz UI —— */
.quiz-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
}
.timer {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--ink);
  background: #f1f5f9;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
}
.timer.urgent { background: #fef2f2; color: var(--bad); }

.stem {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.choices {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.choice {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  width: 100%;
}
.choice:hover:not(:disabled) { border-color: var(--accent); background: var(--soft); }
.choice.selected { border-color: var(--accent); background: var(--soft); }
.choice.correct { border-color: var(--ok); background: #f0fdf4; }
.choice.wrong { border-color: var(--bad); background: #fef2f2; }
.choice:disabled { cursor: default; }
.choice .letter {
  font-weight: 700;
  color: var(--muted);
  min-width: 1.2rem;
}

.explain {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: #f8fafc;
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  font-size: 0.9rem;
}

.progress-bar {
  height: 6px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 1rem;
}
.progress-bar > span {
  display: block;
  height: 100%;
  background: var(--accent);
  transition: width 0.2s ease;
}

.score-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}
.score-table th, .score-table td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
}
.score-table th { color: var(--muted); font-weight: 600; }

.plan-day {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.plan-day strong { color: var(--accent); }
.plan-day.today { background: var(--soft); margin: 0 -0.5rem; padding-left: 0.5rem; padding-right: 0.5rem; border-radius: 6px; }

.coming-soon {
  opacity: 0.65;
  pointer-events: none;
}
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: #e2e8f0;
  color: var(--muted);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
}

.lesson-body {
  white-space: pre-wrap;
  font-size: 0.95rem;
  margin: 1rem 0 1.5rem;
  line-height: 1.6;
}

.loading, .empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
}

.name-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.name-row input { max-width: 220px; }

@media (max-width: 640px) {
  .topbar { padding: 0.65rem 0.85rem; }
  .main { padding: 1.1rem 0.85rem 1.5rem; }
  .sticky-disclosure { font-size: 0.68rem; padding: 0.45rem 0.65rem; }
  :root { --disclosure-h: 88px; }
  h1.page-title { font-size: 1.35rem; }
}

/* —— Multi-course path selector —— */
.path-grid .path-card {
  text-decoration: none;
  color: inherit;
}
.path-card.path-available:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(29, 78, 216, 0.12);
}
.path-card .card-meta {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0;
}
.path-card .card-note {
  font-size: 0.78rem;
  color: var(--warn);
  margin: 0;
}
.badge-live {
  background: #dbeafe;
  color: var(--accent);
}
.soft-recommend {
  font-size: 0.9rem;
  color: var(--warn);
  margin: 0 0 1rem;
}
.crumb {
  font-size: 0.85rem;
  margin: 0 0 0.75rem;
}
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--accent); }

:root {
  --disclosure-h: 96px;
}
@media (max-width: 640px) {
  :root { --disclosure-h: 120px; }
}


/* —— Checklists (Sim1) —— */
.checklist-bullets {
  margin: 1rem 0 1.5rem;
  padding-left: 1.25rem;
}
.checklist-bullets li {
  margin: 0.45rem 0;
}
.btn[aria-disabled="true"] {
  opacity: 0.55;
  pointer-events: none;
  cursor: not-allowed;
}