:root {
  color-scheme: dark;
  --bg: #0a0c12;
  --card: #121722;
  --card-alt: #0f1520;
  --line: #222b3d;
  --text: #d7deea;
  --muted: #92a2b8;
  --primary: #00ffcc;
  --secondary: #3bc2ff;
  --danger: #ff3860;
  --accent: #ff9d3f;
  --accent-soft: rgba(255, 157, 63, 0.18);
  --accent-strong: rgba(255, 157, 63, 0.44);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #101726 0%, var(--bg) 36%);
  color: var(--text);
}

code {
  font-family: "SFMono-Regular", ui-monospace, monospace;
}

.page-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  padding: 24px 28px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 12, 18, 0.88);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.eyebrow {
  color: var(--secondary);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.page-header h1 {
  margin: 8px 0 4px;
  font-size: 28px;
}

.page-header p,
.chart-header p,
.boundaries-header p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(340px, 420px) minmax(0, 1fr);
  gap: 18px;
  padding: 24px 28px 32px;
}

.card {
  background: linear-gradient(180deg, rgba(18, 23, 34, 0.98) 0%, rgba(14, 19, 28, 0.98) 100%);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.22);
}

.controls-card,
.boundaries-card {
  padding: 20px;
}

.chart-card {
  padding: 20px;
  grid-column: 2;
  grid-row: 1 / span 2;
}

.controls-card h2,
.chart-card h2,
.boundaries-card h2 {
  margin: 0 0 14px;
  font-size: 20px;
}

.file-grid {
  display: grid;
  gap: 14px;
}

.file-picker {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card-alt);
}

.file-picker span,
.summary-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #aebfd3;
}

.file-picker input,
.boundary-time-input,
.trial-time-input {
  width: 100%;
  background: #121925;
  color: var(--text);
  border: 1px solid #273247;
  border-radius: 10px;
  padding: 10px 12px;
}

.file-picker small {
  color: var(--muted);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.summary-box {
  padding: 14px;
  border-radius: 14px;
  background: var(--card-alt);
  border: 1px solid var(--line);
  display: grid;
  gap: 6px;
}

.summary-box strong {
  font-size: 18px;
}

.guide-card,
.option-card {
  margin-top: 16px;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid #25354d;
  background: linear-gradient(180deg, #101827 0%, #0d1420 100%);
}

.option-list {
  display: grid;
  gap: 12px;
}

.cut-range-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.cut-card-copy {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.5;
}

.cut-range-summary {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 157, 63, 0.22);
  background: rgba(255, 157, 63, 0.08);
  color: #ffe8cd;
  font-size: 13px;
  line-height: 1.5;
}

.option-field {
  display: grid;
  gap: 8px;
}

.option-field span {
  display: block;
  color: #e4edf8;
  font-size: 14px;
  font-weight: 700;
}

.option-field input {
  width: 100%;
  background: #121925;
  color: var(--text);
  border: 1px solid #273247;
  border-radius: 10px;
  padding: 10px 12px;
}

.guide-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.guide-card-header h3 {
  margin: 0;
  font-size: 16px;
}

.guide-card-header span,
.shortcut-list span {
  color: var(--muted);
  font-size: 13px;
}

.guide-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  color: #dbe7f4;
}

.shortcut-list {
  margin-top: 12px;
  display: grid;
  gap: 6px;
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  min-height: 24px;
  padding: 0 6px;
  border-radius: 8px;
  border: 1px solid #33415c;
  background: #162033;
  color: #f2f7ff;
  font-size: 12px;
  font-weight: 700;
}

.notice {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid #26364f;
  background: rgba(12, 18, 27, 0.85);
  color: #dbe7f4;
  line-height: 1.5;
}

.notice.error {
  border-color: rgba(255, 56, 96, 0.5);
  color: #ffd5dd;
}

.toolbar,
.boundary-toolbar,
.boundary-nav-group,
.chart-controls,
.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.toolbar {
  margin-top: 16px;
}

.toolbar-tight {
  margin-top: 12px;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 14px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
}

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

.btn-primary {
  background: linear-gradient(135deg, #0fe3b6 0%, #20b5ff 100%);
  color: #04111b;
}

.btn-secondary {
  background: #151d2a;
  border-color: #2a3850;
  color: var(--text);
}

.btn-danger {
  background: rgba(255, 56, 96, 0.14);
  border-color: rgba(255, 56, 96, 0.38);
  color: #ffd5dd;
}

.chart-header,
.plot-panel-header,
.boundaries-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.chart-header-side {
  display: grid;
  gap: 10px;
  justify-items: end;
}

.chart-legend-note,
.viewport-pill {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid #2a3750;
  background: rgba(10, 17, 27, 0.9);
  color: var(--muted);
  font-size: 13px;
}

.chart-legend-note strong,
.viewport-pill strong {
  color: #f6fbff;
}

.chart-shell {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.time-scroll-wrap {
  display: grid;
  gap: 8px;
  padding: 14px 16px 8px;
  border-radius: 16px;
  border: 1px solid #25354d;
  background: linear-gradient(180deg, #0f1624 0%, #0c121d 100%);
}

.time-scroll-wrap label {
  color: #dbe7f5;
  font-size: 13px;
  font-weight: 700;
}

.time-scroll-wrap input[type="range"] {
  width: 100%;
  accent-color: #3bc2ff;
}

.time-scroll-hint {
  color: var(--muted);
  font-size: 12px;
}

.plot-panel {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid #25354d;
  background: linear-gradient(180deg, #0f1624 0%, #0c121d 100%);
}

.plot-panel-header h3 {
  margin: 0;
  font-size: 16px;
}

.plot-panel-header span {
  color: var(--muted);
  font-size: 13px;
}

.plot-canvas-wrap {
  margin-top: 12px;
  border: 1px solid #223046;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(8, 12, 19, 0.95), rgba(11, 17, 26, 0.98));
  overflow: hidden;
}

.plot-canvas-wrap-wide {
  min-height: 220px;
}

.plot-canvas-wrap-tall {
  min-height: 760px;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.pressure-preview-wrap {
  margin-top: 12px;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border: 1px solid #223046;
  border-radius: 16px;
  background:
    radial-gradient(circle at top, rgba(59, 194, 255, 0.08), transparent 38%),
    linear-gradient(180deg, rgba(8, 12, 19, 0.95), rgba(11, 17, 26, 0.98));
  overflow: hidden;
}

#pressureCanvas {
  width: 480;
  height: 320px;
  max-width: 100%;
  flex: 0 0 auto;
}

.boundary-toolbar {
  justify-content: space-between;
  margin-top: 14px;
}

.boundary-list {
  margin-top: 16px;
  display: grid;
  gap: 10px;
  max-height: 780px;
  overflow: auto;
  padding-right: 4px;
}

.boundary-list.empty {
  padding: 16px;
  border: 1px dashed #30435f;
  border-radius: 14px;
  color: var(--muted);
}

.boundary-card,
.trial-card {
  padding: 14px;
  border-radius: 14px;
  border: 1px solid #25354d;
  background: linear-gradient(180deg, #0f1725 0%, #0d131d 100%);
  cursor: pointer;
}

.boundary-card:hover,
.trial-card:hover {
  border-color: #355074;
}

.boundary-card.selected,
.trial-card.selected {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(255, 157, 63, 0.55);
  background: linear-gradient(180deg, rgba(47, 27, 8, 0.9), rgba(24, 16, 10, 0.95));
}

.boundary-card-header,
.trial-card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.boundary-card-title,
.trial-card-title {
  font-weight: 700;
  color: #f7fbff;
}

.boundary-card-badge,
.trial-card-badge {
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(59, 194, 255, 0.12);
  color: #99e6ff;
  font-size: 12px;
  font-weight: 700;
}

.boundary-card-meta,
.trial-card-meta {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.boundary-card-inputs,
.trial-card-inputs {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.boundary-card-inputs label,
.trial-card-inputs label {
  display: grid;
  gap: 6px;
  color: #c7d5e6;
  font-size: 12px;
  font-weight: 700;
}

.boundary-card-note,
.trial-card-note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1320px) {
  .page-grid {
    grid-template-columns: 1fr;
  }

  .chart-card {
    grid-column: auto;
    grid-row: auto;
  }

  .chart-header,
  .plot-panel-header,
  .boundaries-header {
    flex-direction: column;
  }

  .chart-header-side {
    justify-items: start;
  }

  .boundary-list {
    max-height: 360px;
  }
}

@media (max-width: 720px) {
  .page-header,
  .page-grid {
    padding-left: 16px;
    padding-right: 16px;
  }

  .summary-grid,
  .trial-card-inputs,
  .cut-range-grid {
    grid-template-columns: 1fr;
  }
}