:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --text: #14231a;
  --muted: #5b6b62;
  --line: #e2e8e4;
  --accent: #16a34a;
  --accent-hover: #15803d;
  --accent-soft: #eafaf0;
  --danger: #dc2626;
  --shadow: 0 6px 28px rgba(20, 35, 26, 0.14);
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
}

/* Full-screen map behind everything */
#map {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: #dfe7e2;
}

/* Floating control panel */
.panel {
  position: fixed;
  z-index: 1000;
  top: 14px;
  left: 14px;
  width: 340px;
  max-width: calc(100vw - 28px);
  max-height: calc(100vh - 28px);
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.panel-head h1 {
  font-size: 1.2rem;
  margin: 0 0 2px;
  letter-spacing: -0.01em;
}
.panel-head p { margin: 0 0 14px; color: var(--muted); font-size: 0.9rem; }

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  border-radius: 10px;
}

.locate {
  width: 100%;
  padding: 12px;
  background: var(--accent-soft);
  color: var(--accent-hover);
  border: 1px solid #cdeede;
  font-weight: 600;
  margin-bottom: 10px;
}
.locate:hover { background: #dff5e8; }
.locate.on { background: var(--accent); color: #fff; border-color: var(--accent); }

.search-row input {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.95rem;
}
.search-row input:focus { outline: 2px solid var(--accent); border-color: transparent; }

.search-results { margin: 6px 0 0; }
.search-results button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 9px 10px;
  background: #f6faf7;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text);
  line-height: 1.3;
}
.search-results button:hover { background: var(--accent-soft); }

.dist-label { margin: 16px 0 8px; font-weight: 600; font-size: 0.9rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 10px 14px;
  background: #f4f7f5;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}
.chip:hover { border-color: var(--accent); }
.chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.chip-input {
  width: 78px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
}
.chip-input:focus { outline: 2px solid var(--accent); border-color: transparent; }

.toggle {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 16px 0;
  font-size: 0.88rem;
  color: var(--muted);
  cursor: pointer;
}
.toggle input { width: 18px; height: 18px; accent-color: var(--accent); }

.go {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}
.go:hover:not(:disabled) { background: var(--accent-hover); }
.go:disabled { opacity: 0.5; cursor: default; }

.status { margin-top: 12px; min-height: 20px; font-size: 0.9rem; color: var(--muted); }
.status.error { color: var(--danger); }

.spinner {
  display: inline-block; width: 14px; height: 14px;
  border: 2px solid #bcd; border-top-color: transparent;
  border-radius: 50%; animation: spin 0.7s linear infinite;
  vertical-align: -2px; margin-right: 7px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.download {
  width: 100%;
  margin-top: 10px;
  padding: 13px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.98rem;
}
.download:hover { background: var(--accent-hover); }
.export-note {
  margin: 7px 0 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
}

/* Elevation profile — a quick visual proof of how flat a loop is */
.elevation {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
}
.elevation svg { display: block; width: 100%; height: 60px; }
.elevation .elev-area { fill: var(--accent-soft); }
.elevation .elev-line { fill: none; stroke: var(--accent); stroke-width: 2; }
.elevation .elev-meta {
  margin-top: 6px;
  font-size: 0.78rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

/* Secondary "ghost" buttons (directions toggle, more routes) */
.ghost-btn {
  width: 100%;
  margin-top: 10px;
  padding: 11px;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--line);
  font-weight: 600;
  font-size: 0.9rem;
}
.ghost-btn:hover { background: var(--accent-soft); border-color: var(--accent); }

/* Turn-by-turn list */
.directions {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  max-height: 40vh;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}
.directions li {
  display: flex;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
}
.directions li:last-child { border-bottom: 0; }
.directions .dir-dist {
  flex: none;
  min-width: 56px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.results { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.route-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}
.route-card:hover { border-color: var(--accent); }
.route-card.active { border-color: var(--accent); background: var(--accent-soft); }
.route-card .rc-main { font-weight: 700; }
.route-card .rc-sub { font-size: 0.82rem; color: var(--muted); }
.route-card .rc-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-flat { background: var(--accent-soft); color: var(--accent-hover); }
.badge-rolling { background: #fff4e5; color: #b45309; }
.badge-hilly { background: #fde8e8; color: #b91c1c; }

/* Grab handle for the mobile bottom sheet (hidden on desktop) */
.handle { display: none; }

/* Mobile: dock the panel to the bottom like a sheet */
@media (max-width: 560px) {
  .panel {
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    max-width: 100%;
    max-height: 80vh;
    padding-top: 6px;
    border-radius: 16px 16px 0 0;
    border-left: 0; border-right: 0; border-bottom: 0;
    transition: max-height 0.2s ease;
  }
  .handle {
    display: block;
    width: 100%;
    background: transparent;
    padding: 6px 0 12px;
    border: 0;
    cursor: pointer;
  }
  .handle::before {
    content: "";
    display: block;
    width: 44px; height: 5px;
    margin: 0 auto;
    border-radius: 999px;
    background: var(--line);
  }
  /* Collapsed: hide the controls, keep the route cards + handle visible so
     the map (and the route you just made) fills the screen. */
  .panel.collapsed { max-height: 46vh; }
  .panel.collapsed .panel-body { display: none; }
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1613; --panel: #16201b; --text: #e7efe9; --muted: #93a89b;
    --line: #26332c; --accent: #22c55e; --accent-hover: #16a34a;
    --accent-soft: #16281d; --shadow: 0 6px 28px rgba(0,0,0,0.5);
  }
  .chip { background: #1b271f; }
  .chip-input, .search-row input { background: #0f1613; color: var(--text); }
  .search-results button { background: #1b271f; }
  .route-card { background: #16201b; }
  .locate { background: var(--accent-soft); border-color: #234; color: #7ee2a6; }
}