:root {
  --panel: rgba(15, 23, 42, 0.78);
  --panel-strong: rgba(30, 41, 59, 0.92);
  --line: rgba(148, 163, 184, 0.22);
  --muted: #94a3b8;
  --text: #e2e8f0;
  --primary: #38bdf8;
  --secondary: #a78bfa;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #fb7185;
}

body {
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.16), transparent 32rem),
    radial-gradient(circle at 80% 10%, rgba(167, 139, 250, 0.18), transparent 28rem),
    linear-gradient(135deg, #020617 0%, #0f172a 52%, #111827 100%);
}

.compact-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: end;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: flex-end;
}

.control-row,
.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin: 1.25rem 0;
}

.control-row label,
.form-grid label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.control-row select,
.form-grid input,
.form-grid select {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.62rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  font: inherit;
}

.control-row select {
  min-width: 220px;
}

.small-btn {
  padding: 0.65rem 0.9rem;
  align-self: flex-end;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.panel,
.metric-card,
.learning-guide {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  box-shadow: 0 18px 45px rgba(2, 6, 23, 0.28);
}

.panel {
  padding: 1.1rem;
}

.panel h2,
.learning-guide h3 {
  margin: 0 0 0.9rem;
  color: #f8fafc;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.helper-text,
.metric-card small {
  color: var(--muted);
}

.toggle-label {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 0.72rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.55);
}

.toggle-label input {
  width: auto;
  margin: 0;
  accent-color: var(--primary);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 1rem 0;
}

.metric-card {
  padding: 1rem;
  min-height: 128px;
}

.metric-card span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.metric-card strong {
  display: block;
  margin: 0.35rem 0;
  color: #f8fafc;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

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

.wide-panel {
  margin-top: 1rem;
}

canvas {
  width: 100%;
  height: auto;
  min-height: 240px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(2, 6, 23, 0.55);
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.swatch {
  display: inline-block;
  width: 0.8rem;
  height: 0.8rem;
  margin-right: 0.35rem;
  border-radius: 999px;
}

.swatch.mean { background: var(--success); }
.swatch.threshold { background: var(--danger); }
.swatch.low { background: var(--primary); }
.swatch.high { background: var(--secondary); }

.data-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 14px;
}

.data-table th,
.data-table td {
  padding: 0.7rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-size: 0.88rem;
  text-align: right;
}

.data-table th {
  color: #cbd5e1;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(30, 41, 59, 0.7);
}

.data-table td:first-child,
.data-table th:first-child {
  text-align: left;
}

.insight-list {
  display: grid;
  gap: 0.75rem;
}

.insight-list p {
  margin: 0;
  padding: 0.9rem;
  border-left: 4px solid var(--primary);
  border-radius: 12px;
  background: rgba(56, 189, 248, 0.08);
  color: #dbeafe;
}

.insight-list p.warning {
  border-left-color: var(--warning);
  background: rgba(251, 191, 36, 0.08);
}

.insight-list p.success {
  border-left-color: var(--success);
  background: rgba(52, 211, 153, 0.08);
}

.attribution-note {
  margin-top: 1rem;
  background: rgba(56, 189, 248, 0.08);
}

@media (max-width: 1100px) {
  .compact-hero,
  .grid-two {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .metrics-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .form-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .data-table {
    display: block;
    overflow-x: auto;
  }
}