:root {
  --bg: #0f172a;
  --ink: #e2e8f0;
  --muted: #94a3b8;
  --card: #111827;
  --line: #334155;
  --accent: #f97316;
  --accent-2: #fb923c;
  --fit-good: #2f855a;
  --fit-warn: #b7791f;
  --fit-risk: #c53030;
}

.explorer-page {
  min-height: calc(100vh - 64px);
  background:
    radial-gradient(circle at 15% 15%, rgba(249, 115, 22, 0.2) 0, transparent 28%),
    radial-gradient(circle at 80% 10%, rgba(251, 146, 60, 0.16) 0, transparent 25%),
    var(--bg);
  color: var(--ink);
  padding: 2rem 1rem 3rem;
}

.explorer-shell {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.hero h1 {
  margin: 0.25rem 0;
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  line-height: 1.15;
}

.eyebrow {
  margin: 0;
  color: var(--accent-2);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.subtitle {
  margin: 0;
  max-width: 65ch;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(2, 6, 23, 0.35);
  padding: 1rem;
}

.section-tools {
  margin-bottom: 0.8rem;
}

.top-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.top-action-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0b1220;
  padding: 0.85rem;
  display: grid;
  gap: 0.7rem;
}

.quiz-card h3 {
  margin: 0;
  font-size: 1.02rem;
}

.quiz-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.87rem;
}

.btn-secondary {
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: rgba(249, 115, 22, 0.14);
  color: #fdba74;
  font-weight: 700;
  padding: 0.56rem 1rem;
  cursor: pointer;
  justify-self: start;
}

.control-grid,
.student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.8rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

input,
select {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.58rem 0.65rem;
  font-size: 0.95rem;
  background: #0b1220;
  color: var(--ink);
}

.actions {
  margin-top: 0.9rem;
  display: flex;
  gap: 0.8rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  border: none;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #0f172a;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.5rem 0.95rem;
  cursor: pointer;
}

.top-action-card .btn-primary {
  justify-self: start;
}

#searchBtn {
  justify-self: stretch;
  align-self: start;
  width: 100%;
  min-width: 0;
  white-space: nowrap;
  border-radius: 12px;
  padding: 0.72rem 1.15rem;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.25;
}

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

.quiz-modal[hidden] {
  display: none;
}

.quiz-modal {
  position: fixed;
  inset: 0;
  z-index: 45;
}

.quiz-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
}

.quiz-dialog {
  position: relative;
  max-width: 740px;
  margin: 7vh auto;
  background: #0b1220;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 16px 38px rgba(2, 6, 23, 0.45);
}

.quiz-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
}

.quiz-head h3 {
  margin: 0;
}

.quiz-close {
  border: none;
  background: transparent;
  color: #cbd5e1;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.quiz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
}

.quiz-actions {
  margin-top: 0.9rem;
  display: flex;
  justify-content: flex-end;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.6rem;
}

.section-head h2 {
  margin: 0;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.results-list {
  display: grid;
  gap: 0.7rem;
}

.results-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 0.8rem;
}

.school-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
  background: #0b1220;
  cursor: pointer;
}

.school-row.active {
  border-color: rgba(249, 115, 22, 0.95);
  box-shadow: 0 0 0 1px rgba(249, 115, 22, 0.55) inset;
}

.school-row h3 {
  margin: 0 0 0.2rem;
  font-size: 1.08rem;
}

.meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.metrics {
  margin: 0.6rem 0 0;
  display: flex;
  gap: 0.62rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.22rem 0.6rem;
  font-size: 0.8rem;
  border: 1px solid var(--line);
  color: #cbd5e1;
  background: #0f172a;
}

.compare-btn {
  align-self: center;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: rgba(249, 115, 22, 0.1);
  border-radius: 8px;
  padding: 0.45rem 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.compare-btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.compare-panel {
  overflow-x: auto;
}

.detail-panel {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.8rem;
  background: #0b1220;
  color: #cbd5e1;
  min-height: 220px;
  transition: all 0.3s ease;
}

.detail-panel.detail-panel-expanded {
  grid-column: 1 / -1;
  min-height: auto;
}

.expand-detail-btn {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  color: var(--accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  height: fit-content;
}

.expand-detail-btn:hover {
  background: rgba(249, 115, 22, 0.1);
  border-color: var(--accent);
}

.detail-panel h3 {
  margin: 0 0 0.35rem;
  color: #f8fafc;
}

.detail-panel p {
  margin: 0.25rem 0;
}

.demographics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

.donut-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0b1220;
  padding: 0.8rem;
}

.donut-card h5 {
  margin: 0;
  font-size: 0.92rem;
  color: #f8fafc;
}

.donut-subtitle {
  margin: 0.2rem 0 0.65rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.donut-ring {
  width: 112px;
  height: 112px;
  border-radius: 50%;
  margin: 0 auto 0.7rem;
  position: relative;
  display: grid;
  place-items: center;
}

.donut-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.donut-segment {
  cursor: pointer;
  transition: opacity 0.14s ease;
}

.donut-segment:hover {
  opacity: 0.82;
}

.donut-center {
  position: absolute;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #0b1220;
  border: 1px solid #1e293b;
  display: grid;
  place-items: center;
  text-align: center;
  line-height: 1.1;
  padding: 0.2rem;
}

.donut-center-value {
  font-size: 0.95rem;
  font-weight: 700;
  color: #f8fafc;
}

.donut-center-label {
  font-size: 0.65rem;
  color: var(--muted);
}

.donut-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.donut-legend li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: #cbd5e1;
  border-radius: 6px;
  padding: 0.2rem 0.25rem;
}

.donut-legend li:hover {
  background: #111827;
}

.swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.donut-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 0.5rem;
  font-size: 0.9rem;
  vertical-align: top;
}
.compare-table th {
  background: #1e293b;
  font-weight: 700;
  color: #cbd5e1;
  position: sticky;
  top: 0;
  white-space: nowrap;
}

.compare-table td {
  background: #0b1220;
}

.compare-table tbody tr:hover {
  background: #111827;
}

.fit-good {
  color: var(--fit-good);
  font-weight: 700;
}

.fit-warn {
  color: var(--fit-warn);
  font-weight: 700;
}

.fit-risk {
  color: var(--fit-risk);
  font-weight: 700;
}

@media (max-width: 720px) {
  .top-actions-grid {
    grid-template-columns: 1fr;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .school-row {
    grid-template-columns: 1fr;
  }

  .compare-btn {
    justify-self: start;
  }

  .donut-ring {
    width: 96px;
    height: 96px;
  }

  .donut-center {
    width: 56px;
    height: 56px;
  }

  .quiz-dialog {
    margin: 4vh 0.6rem;
  }
}