/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0f;
  --surface: #161625;
  --card: #1c1c30;
  --card-hover: #242440;
  --primary: #e94560;
  --secondary: #4ecdc4;
  --accent: #ffd93d;
  --text: #f0f0f0;
  --text-dim: #999;
  --text-muted: #555;
  --border: #2a2a40;
  --radius: 12px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: 0;
}

/* ===== Header ===== */
.hdr {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  padding-top: calc(8px + var(--safe-top));
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  min-height: 44px;
  gap: 12px;
  z-index: 800;
}
.hdr h1 { font-size: 17px; font-weight: 700; white-space: nowrap; }
.hdr-tools { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

.hdr-btn {
  background: var(--primary);
  border: 1px solid var(--primary);
  color: white;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.btn-icon {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  width: 32px; height: 32px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-sm {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  width: 32px; height: 32px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 500;
  width: 100%;
}

/* ===== Map ===== */
#map-wrap {
  flex: 1;
  position: relative;
  min-height: 0;
}
#map { position: absolute; inset: 0; background: #12141c; }

/* Readout chip */
.chip {
  position: absolute;
  right: 10px;
  bottom: 10px;
  background: rgba(22, 22, 37, 0.92);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text);
  z-index: 1100;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  max-width: 60%;
}
.chip.hidden { display: none; }
.chip b { color: var(--secondary); }

/* Legend */
.legend {
  position: absolute;
  right: 10px;
  top: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1100;
  font-size: 10px;
  color: var(--text-dim);
  gap: 2px;
}
.legend.hidden { display: none; }
.legend-bar {
  width: 10px;
  height: 90px;
  border-radius: 5px;
  background: linear-gradient(to top, #e94560 0%, #ff8c00 33%, #ffd93d 66%, #4ecdc4 100%);
  border: 1px solid var(--border);
}
.legend-label { font-variant-numeric: tabular-nums; }

/* Toast */
.toast {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  background: rgba(233, 69, 96, 0.95);
  color: white;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13px;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.toast.hidden { display: none; }
.toast-close { background: none; border: none; color: white; font-size: 16px; cursor: pointer; flex-shrink: 0; }

/* ===== Range / strip chart ===== */
.range {
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  height: 64px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  touch-action: none;
  padding: 0 22px;
}
#strip-canvas {
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 100%;
}
#range-track {
  position: absolute;
  left: 22px; right: 22px;
  top: 0; bottom: 0;
  pointer-events: none;
}
.handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 44px;
  margin-left: -22px;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  cursor: ew-resize;
  z-index: 10;
}
.handle::after {
  content: '';
  width: 6px;
  height: 44px;
  border-radius: 3px;
  background: var(--secondary);
  box-shadow: 0 0 8px rgba(78, 205, 196, 0.5);
}
#handle-start::after { background: #4caf50; box-shadow: 0 0 8px rgba(76,175,80,0.5); }
#handle-end::after { background: var(--primary); box-shadow: 0 0 8px rgba(233,69,96,0.5); }

/* ===== Stats bar ===== */
.stats-bar {
  flex-shrink: 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 6px 8px;
  padding-bottom: calc(6px + var(--safe-bottom));
  background: var(--surface);
  min-height: 40px;
}
.stat { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 1px; }
.stat-val { font-size: 14px; font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; }
.stat-label { font-size: 10px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.4px; }

/* ===== Settings bottom sheet ===== */
.sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-radius: 16px 16px 0 0;
  transform: translateY(100%);
  transition: transform 0.25s ease;
  z-index: 1200;
  max-height: 80%;
  display: flex;
  flex-direction: column;
  box-shadow: 0 -8px 30px rgba(0,0,0,0.5);
}
.sheet.open { transform: translateY(0); }
.sheet-handle {
  width: 36px; height: 4px; border-radius: 2px;
  background: var(--border);
  margin: 8px auto;
  flex-shrink: 0;
}
.sheet-body {
  padding: 4px 20px calc(20px + var(--safe-bottom));
  overflow-y: auto;
}
.sheet-header {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 15px; font-weight: 700; margin-bottom: 16px;
}
.sheet-body label {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin: 14px 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.sheet-body label.row-label {
  display: flex; align-items: center; justify-content: space-between;
  text-transform: none; font-size: 13px; color: var(--text);
}
.sheet-body input[type="range"] {
  width: 100%;
  -webkit-appearance: none; appearance: none;
  height: 8px; background: rgba(255,255,255,0.12);
  border-radius: 4px; outline: none; cursor: pointer;
}
.sheet-body input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--secondary); border: none;
  box-shadow: 0 0 8px rgba(78, 205, 196, 0.5);
  cursor: pointer;
}
.sheet-body select {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  width: 100%;
}
.sheet-body input[type="checkbox"] {
  width: 20px; height: 20px;
}
.sheet-body .btn { margin-top: 20px; }

.sheet-scrim {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1199;
}
.sheet-scrim.hidden { display: none; }