:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #d9dde7;
  --accent: #2454d6;
  --accent-dark: #173ea6;
  --warning-bg: #fff7ed;
  --warning-border: #fed7aa;
  --warning-text: #7c2d12;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-header {
  padding: 28px 32px;
  background: linear-gradient(135deg, #111827, #1d4ed8);
  color: white;
}

.app-header h1 {
  margin: 0 0 6px;
  font-size: 2rem;
}

.subtitle {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.app-shell {
  width: min(1400px, calc(100% - 32px));
  margin: 24px auto 48px;
}

.panel,
.notice,
.summary-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel {
  padding: 20px;
  margin-bottom: 18px;
}

.upload-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.upload-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.file-picker input {
  display: none;
}

.file-picker span,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: white;
  font-weight: 650;
  cursor: pointer;
}

button:hover,
.file-picker span:hover {
  background: var(--accent-dark);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.secondary-button {
  background: #e5e7eb;
  color: #111827;
}

.secondary-button:hover {
  background: #d1d5db;
}

.file-status,
.muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.notice {
  padding: 16px 18px;
  margin-bottom: 18px;
  background: var(--warning-bg);
  border-color: var(--warning-border);
  color: var(--warning-text);
  line-height: 1.45;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.summary-card {
  padding: 18px;
}

.summary-card .label {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.summary-card .value {
  font-size: 1.35rem;
  font-weight: 750;
  word-break: break-word;
}

.filters-panel h2,
.panel h2 {
  margin: 0 0 14px;
}

.filters-grid,
.plot-controls {
  display: grid;
  grid-template-columns: repeat(6, minmax(120px, 1fr));
  gap: 12px;
  align-items: end;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

input,
select {
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 10px;
  background: white;
  color: var(--text);
  font-size: 0.95rem;
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0 0 18px;
}

.tab-button {
  background: #e5e7eb;
  color: #111827;
}

.tab-button.active {
  background: var(--accent);
  color: white;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

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

.table-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  max-height: 620px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead {
  position: sticky;
  top: 0;
  background: #f9fafb;
  z-index: 1;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}

th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

td.data-cell {
  font-family:
    "Cascadia Code",
    "SFMono-Regular",
    Consolas,
    monospace;
}

.pagination-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
}

.plot-controls {
  grid-template-columns: 1fr 1fr auto;
  margin-bottom: 16px;
}

.chart-wrap {
  height: 460px;
}

.warnings-list {
  display: grid;
  gap: 10px;
}

.warning-item {
  padding: 12px;
  border-radius: 12px;
  background: #f9fafb;
  border: 1px solid var(--border);
}

.warning-item code {
  display: block;
  margin-top: 6px;
  white-space: pre-wrap;
  color: #374151;
}

.debug-json {
  overflow: auto;
  max-height: 620px;
  padding: 16px;
  border-radius: 12px;
  background: #111827;
  color: #e5e7eb;
  font-size: 0.85rem;
}

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

  .filters-grid,
  .plot-controls {
    grid-template-columns: 1fr 1fr;
  }

  .plot-controls button,
  .filters-grid button {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .app-header {
    padding: 22px 18px;
  }

  .app-shell {
    width: calc(100% - 20px);
    margin-top: 14px;
  }

  .summary-grid,
  .filters-grid,
  .plot-controls {
    grid-template-columns: 1fr;
  }

  .chart-wrap {
    height: 360px;
  }
}

.section-subhead {
  margin-top: 24px !important;
}

.decoded-controls {
  grid-template-columns: 1fr auto auto;
}

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