:root {
  --bg: #f7fff5;
  --panel: #ffffff;
  --ink: #153223;
  --accent: #75ff35;
  --accent-dark: #44cc0f;
  --muted: #5f7b6e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(circle at top right, #e9ffe0 0%, var(--bg) 50%);
  color: var(--ink);
}

header {
  padding: 1rem 1.25rem 0.5rem;
}

header h1 {
  margin: 0;
}

header p {
  margin-top: 0.35rem;
  color: var(--muted);
}

main {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 1rem;
  padding: 0 1rem 1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid #dbf5cd;
  border-radius: 12px;
  box-shadow: 0 5px 16px rgb(24 87 12 / 8%);
}

.controls {
  padding: 1rem;
}

.file-row,
.playback-row {
  display: grid;
  gap: 0.8rem;
}

.file-row {
  grid-template-columns: 1fr;
}

label {
  display: grid;
  gap: 0.4rem;
  font-weight: 600;
}

button {
  font: inherit;
  border-radius: 8px;
}

fieldset {
  border: 1px solid #cbe8bf;
  padding: 0.45rem;
  background: #f7fff5;
}

.actions {
  display: flex;
  gap: 0.6rem;
  margin: 0.9rem 0;
}

button {
  border: 1px solid #91df6f;
  background: linear-gradient(to bottom, #c4ffa6, var(--accent));
  color: #153223;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  font-weight: 700;
}

button:hover:not(:disabled) {
  background: linear-gradient(to bottom, #a8ff80, var(--accent-dark));
}

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

.scrub-label {
  grid-column: 1 / -1;
}

#timelineTitle {
  display: inline-block;
  margin-bottom: 0.2rem;
}

#timeline {
  width: 100%;
  accent-color: #45cf0f;
}

.error-message {
  margin: 0.8rem 0 0;
  padding: 0.55rem 0.65rem;
  border: 1px solid #ef9a9a;
  border-radius: 8px;
  background: #fff1f1;
  color: #8f1d1d;
  font-size: 0.92rem;
  font-weight: 600;
}
.route-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.route-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 999px;
  border: 1px solid #11182766;
}

.route-a { background: #2563eb; }
.route-b { background: #a21caf; }

.file-name {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.9rem;
}

#speedGroup {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

#speedGroup legend {
  font-weight: 600;
  margin-right: 0.4rem;
}

#speedGroup label {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  font-weight: 600;
}

.stats-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: #1e3a2b;
}

.route-stats {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid #d9eed1;
  border-radius: 999px;
  padding: 0.2rem 0.45rem;
  background: #fbfff9;
  white-space: nowrap;
}

.route-stats .route-dot {
  width: 0.62rem;
  height: 0.62rem;
}

#map {
  width: 100%;
  min-height: 72vh;
  border-radius: 12px;
}

@media (max-width: 960px) {
  main {
    grid-template-columns: 1fr;
  }

  #map {
    min-height: 60vh;
  }
}


.file-picker-row {
  display: grid;
  gap: 0.35rem;
}

.file-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.file-input-hidden {
  display: none;
}

.file-trigger {
  padding: 0.42rem 0.7rem;
  font-weight: 600;
}


.map-panel {
  position: relative;
}

.map-footer {
  height: 0;
  position: relative;
}

.source-link {
  position: absolute;
  right: 0.7rem;
  top: 0.25rem;
  font-size: 0.72rem;
  color: #6f8a7f;
  text-decoration: none;
  opacity: 0.85;
}

.source-link:hover,
.source-link:focus-visible {
  text-decoration: underline;
  opacity: 1;
}