/* === Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sc1: #374E55;
  --sc2: #DF8F44;
  --sc3: #00A1D5;
  --sc4: #B24745;
  --bg: #fafafa;
  --text: #222;
  --muted: #666;
  --border: #ddd;
  --accent: #0072B5;
  --danger: #c0392b;
  --font: 'Segoe UI', Arial, Helvetica, sans-serif;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px 40px;
}

/* === Disclaimer Banner === */
#disclaimer-banner {
  background: #fff3cd;
  color: #856404;
  border-bottom: 1px solid #ffc107;
  text-align: center;
  padding: 6px 12px;
  font-size: 13px;
  position: sticky;
  top: 0;
  z-index: 100;
  margin: 0 -16px;
}

/* === Header === */
#app-header {
  text-align: center;
  padding: 24px 0 8px;
}

#app-header h1 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.subtitle {
  font-size: 14px;
  color: var(--muted);
  margin-top: 4px;
}

/* === Abstract === */
#abstract-section {
  margin: 12px 0 20px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
  padding: 12px 16px;
}

#abstract-section summary {
  cursor: pointer;
  font-size: 15px;
}

#abstract-content {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #444;
  white-space: pre-line;
}

/* === Controls === */
#controls {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  flex-wrap: wrap;
}

#control-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#control-row-presets, #control-row-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.control-group-label {
  font-size: 12px;
  color: var(--muted);
  margin-right: 2px;
}

.btn-preset {
  font-weight: 600;
  min-width: 44px;
  text-align: center;
}

.btn-preset.active {
  color: #fff;
  border-color: transparent;
}

#btn-perturb {
  margin-left: 4px;
  font-style: italic;
  color: var(--muted);
  border-style: dashed;
}

button, #csv-upload-label {
  font-family: var(--font);
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover, #csv-upload-label:hover {
  background: #f0f0f0;
}

#csv-upload {
  display: none;
}

#csv-upload-label {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
#csv-upload-label:hover {
  background: #005f96;
}

/* === Result Panel === */
#result-panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  min-width: 280px;
}

#result-sc {
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-label {
  color: var(--muted);
  font-size: 13px;
}

/* Distance bars */
#distance-bars {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 2px;
}

.dist-bar-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
}

.dist-bar-label {
  width: 28px;
  text-align: right;
  font-weight: 600;
  color: var(--muted);
}

.dist-bar-track {
  flex: 1;
  height: 10px;
  background: #eee;
  border-radius: 3px;
  overflow: hidden;
}

.dist-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}

.dist-bar-value {
  width: 36px;
  text-align: right;
  font-size: 10px;
  color: var(--muted);
}

#result-sc-value {
  font-weight: 700;
  font-size: 18px;
  padding: 2px 10px;
  border-radius: 4px;
}

#result-details {
  font-size: 12px;
  color: var(--muted);
}

/* === Charts === */
#charts {
  margin: 8px 0;
}

.chart-impact-legend {
  font-size: 11px;
  color: #999;
  margin-bottom: 8px;
}

.chart-category-header {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 16px 0 6px;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--border);
}

.chart-category-header:first-child {
  margin-top: 0;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
}

.chart-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 8px 4px;
}

.chart-panel .chart-title {
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 0;
}

.chart-impact {
  font-size: 10px;
  color: var(--muted);
  text-align: center;
  margin-bottom: 2px;
}

.chart-impact.negligible {
  color: #bbb;
  font-style: italic;
}

.chart-panel svg {
  display: block;
}

/* SVG styling */
.trajectory-line { fill: none; stroke-width: 2; opacity: 0.85; }
.trajectory-band { opacity: 0.12; }
.patient-line { fill: none; stroke: #111; stroke-width: 2.5; stroke-dasharray: 6 3; }
.chart-panel {
  touch-action: pan-x pan-y;
}

.chart-panel svg {
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.drag-overlay {
  cursor: crosshair;
}

.axis text { font-size: 10px; }
.axis path, .axis line { stroke: #ccc; }

/* === Legend === */
#legend {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin: 12px 0;
  font-size: 13px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: default;
}

.legend-swatch {
  width: 14px;
  height: 14px;
  border-radius: 2px;
}

.legend-label { color: var(--muted); }

/* === Footer === */
footer {
  text-align: center;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}

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

.github-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #24292e;
  color: #fff !important;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
}
.github-btn:hover { background: #444; text-decoration: none !important; }
.github-btn svg { vertical-align: middle; }

.disclaimer-footer {
  margin-top: 8px;
  font-size: 11px;
  color: #999;
}


/* === Responsive === */
@media (max-width: 500px) {
  .chart-grid { grid-template-columns: 1fr; }
  #controls { flex-direction: column; align-items: flex-start; }
}