/* ==========================================================================
   GPX Track Repair — browser console styles (T069).
   Design tokens first: every visual rule below references a token, never a
   raw value. Palette: warm paper console, signal-orange action color, and
   three semantic track states — original (slate), repaired (green), and
   anomaly (red/amber/blue by severity).
   ========================================================================== */

:root {
  /* Palette */
  --color-bg: #f4f1ea;
  --color-surface: #fffdf8;
  --color-sunken: #ece7dc;
  --color-ink: #23272f;
  --color-ink-soft: #4c525d;
  --color-ink-muted: #7b828e;
  --color-border: #ddd5c4;
  --color-border-strong: #b9ad94;

  --color-accent: #c2410c;
  --color-accent-strong: #9a3412;
  --color-accent-soft: #fbe8dc;

  --color-original: #64748b;      /* original track — slate */
  --color-repaired: #15803d;      /* repaired track — green */

  --color-anomaly-high: #dc2626;
  --color-anomaly-high-ring: #7f1d1d;
  --color-anomaly-high-ink: #991b1b;
  --color-anomaly-medium: #d97706;
  --color-anomaly-medium-ring: #78350f;
  --color-anomaly-medium-ink: #92400e;
  --color-anomaly-low: #0284c7;
  --color-anomaly-low-ring: #0c4a6e;
  --color-anomaly-low-ink: #075985;

  --color-ok-bg: #e5f3e8;
  --color-ok-ink: #166534;
  --color-error-bg: #fbe5e5;
  --color-error-ink: #b91c1c;
  --color-busy-bg: #fdf1e2;
  --color-busy-ink: #92400e;

  /* Typography */
  --font-display: "SFMono-Regular", ui-monospace, "Cascadia Mono", "JetBrains Mono",
      Menlo, Consolas, monospace;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Trebuchet MS",
      sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.85rem;
  --text-base: 0.95rem;
  --text-lg: 1.1rem;
  --text-xl: 1.35rem;

  /* Spacing (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* Shape and elevation */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgb(35 39 47 / 8%);
  --shadow-md: 0 12px 30px rgb(35 39 47 / 14%);
  --focus-ring: 0 0 0 3px rgb(194 65 12 / 28%);
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  color: var(--color-ink);
  background:
    radial-gradient(1100px 480px at 88% -12%, rgb(194 65 12 / 6%), transparent 62%),
    var(--color-bg);
  min-height: 100vh;
}

h1,
h2,
h3,
p {
  margin: 0;
}

a {
  color: var(--color-accent-strong);
}

:focus-visible {
  outline: 2px solid transparent;
  box-shadow: var(--focus-ring);
}

.skip-link {
  position: absolute;
  left: -100vw;
  top: 0;
  background: var(--color-accent);
  color: var(--color-surface);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 2000;
}

.skip-link:focus {
  left: var(--space-3);
  top: var(--space-3);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.app-header {
  position: sticky;
  top: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.brand-mark {
  color: var(--color-accent);
  flex: none;
}

.app-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.app-tagline {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  max-width: 56ch;
}

.language-switch {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */

.layout {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-6) var(--space-7);
  display: grid;
  grid-template-columns: minmax(340px, 430px) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}

.panel-column {
  display: grid;
  gap: var(--space-4);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
}

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-ink-soft);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-4);
  border-bottom: 1px dashed var(--color-border);
}

.app-footer {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-border);
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
}

.noscript-note {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-5);
  color: var(--color-error-ink);
  font-size: var(--text-sm);
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */

#repair-form,
#reopen-form {
  display: grid;
  gap: var(--space-4);
}

.field {
  display: grid;
  gap: var(--space-1);
}

.field-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink-soft);
}

.field-hint {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.field-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font: inherit;
  font-size: var(--text-sm);
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.field-input:focus {
  border-color: var(--color-accent);
}

.field-input:disabled {
  background: var(--color-sunken);
  cursor: not-allowed;
}

.field-input[type="file"]::file-selector-button {
  margin-right: var(--space-3);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-accent-strong);
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.button {
  justify-self: start;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease,
      color 120ms ease, transform 60ms ease;
}

.button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-surface);
}

.button-primary:hover:not(:disabled) {
  background: var(--color-accent-strong);
}

.button-primary:active:not(:disabled) {
  transform: translateY(1px);
}

.button-secondary {
  background: transparent;
  color: var(--color-ink-soft);
  border-color: var(--color-border-strong);
}

.button-secondary:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent-strong);
  background: var(--color-accent-soft);
}

.form-status {
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
}

.form-status--ok {
  background: var(--color-ok-bg);
  color: var(--color-ok-ink);
}

.form-status--error {
  background: var(--color-error-bg);
  color: var(--color-error-ink);
}

.form-status--busy {
  background: var(--color-busy-bg);
  color: var(--color-busy-ink);
}

/* --------------------------------------------------------------------------
   Summary
   -------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid transparent;
  border-radius: 999px;
}

.badge-repaired {
  color: var(--color-ok-ink);
  background: var(--color-ok-bg);
  border-color: rgb(22 101 52 / 30%);
}

.badge-failed {
  color: var(--color-error-ink);
  background: var(--color-error-bg);
  border-color: rgb(185 28 28 / 30%);
}

.fact-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-1) 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: var(--text-sm);
}

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

.fact-value {
  font-weight: 600;
  text-align: right;
  overflow-wrap: anywhere;
}

.counts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.count-tile {
  background: var(--color-sunken);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
}

.count-label {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.count-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}

.summary-reason {
  margin-top: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-error-ink);
}

.summary-message {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.empty-note {
  color: var(--color-ink-muted);
  font-size: var(--text-sm);
}

/* --------------------------------------------------------------------------
   Anomaly table
   -------------------------------------------------------------------------- */

.table-scroll {
  overflow-x: auto;
}

.anomaly-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.anomaly-table th {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: left;
  color: var(--color-ink-muted);
  padding: var(--space-2) var(--space-3);
  border-bottom: 2px solid var(--color-border-strong);
  white-space: nowrap;
}

.anomaly-table td {
  padding: var(--space-2) var(--space-3);
  border-top: 1px solid var(--color-border);
  vertical-align: top;
}

.anomaly-table tbody tr:hover {
  filter: brightness(0.985);
}

.anomaly-row-high {
  background: color-mix(in srgb, var(--color-anomaly-high) 7%, transparent);
  box-shadow: inset 3px 0 0 var(--color-anomaly-high);
}

.anomaly-row-medium {
  background: color-mix(in srgb, var(--color-anomaly-medium) 8%, transparent);
  box-shadow: inset 3px 0 0 var(--color-anomaly-medium);
}

.anomaly-row-low {
  background: color-mix(in srgb, var(--color-anomaly-low) 7%, transparent);
  box-shadow: inset 3px 0 0 var(--color-anomaly-low);
}

.anomaly-cell-type {
  font-weight: 600;
  white-space: nowrap;
}

.anomaly-confidence {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  white-space: nowrap;
}

.anomaly-range {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  white-space: nowrap;
}

.anomaly-cell-explanation {
  min-width: 16ch;
  color: var(--color-ink-soft);
}

.anomaly-badge {
  display: inline-block;
  padding: 1px var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 999px;
  white-space: nowrap;
}

.anomaly-badge-high {
  color: var(--color-anomaly-high-ink);
  background: color-mix(in srgb, var(--color-anomaly-high) 14%, transparent);
}

.anomaly-badge-medium {
  color: var(--color-anomaly-medium-ink);
  background: color-mix(in srgb, var(--color-anomaly-medium) 16%, transparent);
}

.anomaly-badge-low {
  color: var(--color-anomaly-low-ink);
  background: color-mix(in srgb, var(--color-anomaly-low) 12%, transparent);
}

/* --------------------------------------------------------------------------
   Downloads and history
   -------------------------------------------------------------------------- */

.download-list {
  display: grid;
  gap: var(--space-2);
}

.download-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font: inherit;
  font-size: var(--text-sm);
  text-align: left;
  text-decoration: none;
  color: var(--color-ink-soft);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 120ms ease, background-color 120ms ease,
      color 120ms ease;
}

.download-link::before {
  content: "↓";
  font-family: var(--font-display);
  color: var(--color-accent);
}

.download-link:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
}

/* --------------------------------------------------------------------------
   Map panel
   -------------------------------------------------------------------------- */

.map-panel {
  position: relative;
  z-index: 1;
}

.map {
  height: clamp(440px, calc(100vh - 210px), 780px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: var(--color-sunken);
  overflow: hidden;
}

/* Leaflet puts the leaflet-container class on the .map element itself, so any
   height/width here would override the .map sizing above; keep typography only. */
.leaflet-container {
  font-family: var(--font-body);
  font-size: var(--text-sm);
}

.leaflet-control-attribution {
  font-size: var(--text-xs);
}

.map-note {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 900;
  max-width: 38ch;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.map-legend {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  z-index: 900;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: var(--space-1) var(--space-2);
  margin: calc(-1 * var(--space-1)) calc(-1 * var(--space-2));
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.legend-item:hover {
  background: var(--color-border);
}

.legend-item:focus-visible {
  outline: 2px solid var(--color-primary, #2563eb);
  outline-offset: 1px;
}

.legend-item-hidden {
  opacity: 0.45;
}

.legend-item-hidden .legend-swatch {
  opacity: 0.3;
}

.legend-swatch {
  display: inline-block;
  width: 22px;
  height: 4px;
  border-radius: 2px;
}

.legend-swatch.track-original {
  background: var(--color-original);
}

.legend-swatch.track-repaired {
  background: var(--color-repaired);
}

.legend-swatch.legend-swatch-anomaly {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-anomaly-high);
}

/* Track polylines rendered by Leaflet as SVG paths: distinct visual states
   for the original and the repaired geometry. */

#map path.track-original {
  stroke: var(--color-original);
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

#map path.track-repaired {
  stroke: var(--color-repaired);
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

#map path.anomaly-marker {
  fill-opacity: 0.85;
}

#map path.anomaly-marker-high {
  stroke: var(--color-anomaly-high-ring);
  fill: var(--color-anomaly-high);
}

#map path.anomaly-marker-medium {
  stroke: var(--color-anomaly-medium-ring);
  fill: var(--color-anomaly-medium);
}

#map path.anomaly-marker-low {
  stroke: var(--color-anomaly-low-ring);
  fill: var(--color-anomaly-low);
}

/* --------------------------------------------------------------------------
   Footer, responsive behavior
   -------------------------------------------------------------------------- */

.app-footer {
  color: var(--color-ink-muted);
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .map {
    height: 440px;
  }
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4);
  }

  .layout {
    padding: var(--space-4);
  }

  .app-footer {
    padding: var(--space-4);
  }

  .map {
    height: 360px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .button,
  .download-link {
    transition: none;
  }
}