:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-hover: #243044;
  --border: #2d3a4f;
  --text: #e8edf4;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.15);
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --forma-a: #60a5fa;
  --forma-b: #34d399;
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 1.25rem 1rem 1rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h1 {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.sidebar-header p {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.filters {
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.filters input,
.filters select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.85rem;
}

.filters input:focus,
.filters select:focus {
  outline: 2px solid var(--accent);
  border-color: transparent;
}

.aula-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
}

.aula-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.75rem;
  margin-bottom: 0.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.aula-item:hover {
  background: var(--surface-hover);
}

.aula-item.active {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.aula-item-title {
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 0.35rem;
}

.aula-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-area {
  background: var(--accent-soft);
  color: var(--accent);
}

.badge-warn {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.score-pill {
  font-size: 0.7rem;
  color: var(--muted);
  margin-left: auto;
}

.main {
  overflow-y: auto;
  padding: 1.5rem 2rem 2rem;
}

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero {
  margin-bottom: 1.5rem;
}

.hero h2 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  max-width: 720px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  border: 1px solid;
}

.alert-warn {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.35);
  color: #fcd34d;
}

.alert-info {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.35);
  color: #93c5fd;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.metric-value {
  font-size: 1.35rem;
  font-weight: 600;
}

.metric-value.positive {
  color: var(--success);
}

.metric-value.neutral {
  color: var(--forma-a);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.card h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card h3 .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.dot-a {
  background: var(--forma-a);
}

.dot-b {
  background: var(--forma-b);
}

.bar-row {
  margin-bottom: 0.75rem;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  margin-bottom: 0.25rem;
}

.bar-label span:first-child {
  font-weight: 500;
}

.bar-label span:last-child {
  color: var(--muted);
}

.bar-track {
  height: 6px;
  background: var(--bg);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
}

.bar-fill-a {
  background: var(--forma-a);
}

.bar-fill-b {
  background: var(--forma-b);
}

.descritor-detail {
  margin-bottom: 1.5rem;
}

.descritor-detail h4 {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.descritor-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  font-size: 0.88rem;
}

.descritor-box strong {
  color: var(--accent);
}

.competencia {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

th {
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  padding: 0.5rem 0.4rem;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid rgba(45, 58, 79, 0.5);
}

td.score {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.transcricao {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.65;
  max-height: 200px;
  overflow-y: auto;
}

.actions {
  margin-top: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface-hover);
  transition: border-color 0.15s;
}

.btn:hover {
  border-color: var(--accent);
}

.footer-note {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}

/* Nav entre painéis */
.top-nav {
  display: flex;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.nav-link {
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface-hover);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: rgba(59, 130, 246, 0.35);
}

/* Painel cobertura */
.cobertura-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 2rem;
}

.page-header {
  margin-bottom: 1.25rem;
}

.page-header h1 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.page-header p {
  font-size: 0.85rem;
  color: var(--muted);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.summary-card.highlight-ok {
  border-color: rgba(34, 197, 94, 0.4);
}

.summary-card.highlight-pending {
  border-color: rgba(239, 68, 68, 0.35);
}

.summary-card .value {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.summary-card .value.ok {
  color: var(--success);
}

.summary-card .value.pending {
  color: var(--danger);
}

.summary-card .label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.25rem;
}

.tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.tab {
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.82rem;
  cursor: pointer;
}

.tab.active {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.toolbar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.toolbar input,
.toolbar select {
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.82rem;
}

.area-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
}

.area-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}

.area-header:hover {
  background: var(--surface-hover);
}

.area-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.area-stats {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-size: 0.78rem;
}

.progress-bar {
  width: 100px;
  height: 6px;
  background: var(--bg);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--success);
  border-radius: 3px;
}

.area-body {
  padding: 0.5rem;
}

.hab-row {
  border: 1px solid transparent;
  border-radius: 8px;
  margin-bottom: 0.35rem;
}

.hab-row.covered {
  border-color: rgba(34, 197, 94, 0.2);
  background: rgba(34, 197, 94, 0.04);
}

.hab-row.pending {
  border-color: rgba(239, 68, 68, 0.15);
  background: rgba(239, 68, 68, 0.03);
}

.hab-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem;
  cursor: pointer;
}

.hab-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 0.35rem;
  flex-shrink: 0;
}

.status-dot.covered {
  background: var(--success);
}

.status-dot.pending {
  background: var(--danger);
}

.hab-info {
  flex: 1;
  min-width: 0;
}

.hab-code {
  font-weight: 600;
  font-size: 0.88rem;
}

.hab-text {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.2rem;
  line-height: 1.4;
}

.hab-meta {
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
}

.hab-detail {
  padding: 0 0.75rem 0.75rem 2.35rem;
  display: none;
}

.hab-row.open .hab-detail {
  display: block;
}

.aula-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.65rem;
  margin-bottom: 0.25rem;
  border-radius: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  text-decoration: none;
  color: var(--text);
}

.aula-link:hover {
  border-color: var(--accent);
}

.aula-link .rank {
  color: var(--accent);
  font-weight: 600;
  margin-right: 0.5rem;
}

.empty-hab {
  font-size: 0.78rem;
  color: var(--muted);
  font-style: italic;
  padding: 0.25rem 0;
}

.disc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
}

.disc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}

.disc-card.covered {
  border-color: rgba(34, 197, 94, 0.35);
}

.disc-card.pending {
  border-color: rgba(239, 68, 68, 0.3);
  opacity: 0.85;
}

.disc-card h4 {
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.disc-card .sub {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.disc-aulas {
  font-size: 0.78rem;
}

.disc-aulas li {
  margin-left: 1rem;
  margin-bottom: 0.2rem;
}

.badge-covered {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
}

.badge-pending {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
}

.badge-relevancia {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  font-size: 0.72rem;
}

.metrics-relevancia {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(168, 85, 247, 0.08);
  border-radius: var(--radius);
  border: 1px solid rgba(168, 85, 247, 0.2);
}

/* Playlists (objetivo b) */
.filters textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
  resize: vertical;
  min-height: 4.2rem;
}

.filters textarea:focus {
  outline: 2px solid var(--accent);
  border-color: transparent;
}

.filter-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.filter-hint {
  font-size: 0.75rem;
  color: var(--muted);
}

.chk-vazias {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.btn-primary {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--text);
  cursor: pointer;
  width: 100%;
  justify-content: center;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: wait;
}

.hab-vazia {
  opacity: 0.65;
}

.empty-mini {
  font-size: 0.8rem;
  color: var(--muted);
  padding: 0.75rem;
}

.kicker {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.playlist-aulas {
  list-style: none;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.playlist-aula {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.playlist-aula-head {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  min-width: 0;
}

.playlist-n {
  flex: 0 0 auto;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  display: grid;
  place-items: center;
}

.sugestao-lista {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sugestao-item {
  text-align: left;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.sugestao-item:hover {
  border-color: var(--accent);
}

.sugestao-item .muted {
  font-size: 0.75rem;
  color: var(--muted);
}

.sugestao-texto {
  font-size: 0.85rem;
}

@media (max-width: 800px) {
  .playlist-layout.layout {
    grid-template-columns: 1fr;
  }
}