* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  display: flex;
  height: 100vh;
  font-family: system-ui, sans-serif;
  font-size: 14px;
}

#sidebar {
  width: 360px;
  min-width: 360px;
  height: 100vh;
  overflow-y: auto;
  padding: 16px;
  background: #1e1e2e;
  color: #cdd6f4;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#sidebar h2 {
  font-size: 16px;
  color: #cba6f7;
  margin-bottom: 4px;
}

section {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  background: #313244;
  border-radius: 8px;
}

label { font-size: 12px; color: #a6adc8; }

input[type="number"], input[type="range"], input[type="text"] {
  width: 100%;
  padding: 6px 8px;
  background: #45475a;
  border: 1px solid #585b70;
  border-radius: 4px;
  color: #cdd6f4;
  font-size: 13px;
}

button {
  padding: 7px 12px;
  background: #89b4fa;
  color: #1e1e2e;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}

button:disabled {
  background: #45475a;
  color: #585b70;
  cursor: not-allowed;
}

button:hover:not(:disabled) { background: #b4d0fb; }

/* 航點清單 */
#waypoint-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }
#waypoint-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #1e1e2e;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
}
#waypoint-list li button {
  padding: 2px 6px;
  background: #f38ba8;
  font-size: 11px;
}

#speed-display { font-size: 12px; color: #89b4fa; }

#map-wrapper {
  flex: 1;
  position: relative;
  height: 100vh;
}

#map { width: 100%; height: 100%; }

#status-msg {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(30, 30, 46, 0.88);
  color: #a6e3a1;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 20px;
  border: 1px solid rgba(166, 227, 161, 0.25);
  backdrop-filter: blur(6px);
  white-space: nowrap;
  pointer-events: none;
  z-index: 10;
  opacity: 0;
  transition: opacity 0.2s ease;
}

/* 最愛地點 / 最愛路徑 清單 */
#fav-location-list,
#fav-route-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 160px;
  overflow-y: auto;
}

#fav-location-list li,
#fav-route-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #1e1e2e;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  gap: 4px;
}

#fav-location-list li span,
#fav-route-list li span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#fav-location-list li .btn-load,
#fav-route-list li .btn-load {
  padding: 2px 6px;
  background: #a6e3a1;
  color: #1e1e2e;
  font-size: 11px;
  flex-shrink: 0;
}

#fav-location-list li .btn-del,
#fav-route-list li .btn-del {
  padding: 2px 6px;
  background: #f38ba8;
  color: #1e1e2e;
  font-size: 11px;
  flex-shrink: 0;
}

/* 位置設定 — 操作按鈕列 */
#location-action-row { display: flex; gap: 6px; align-items: center; }
#btn-confirm-location { flex: 1; background: #a6e3a1; color: #1e1e2e; font-size: 13px; }
#btn-confirm-location:hover:not(:disabled) { background: #c4f0c0; }

/* 「↩ 上一次」— 圓形圖示按鈕（類似 Google Maps 定位按鈕） */
#btn-back-location {
  width: 36px; height: 36px; min-width: 36px;
  border-radius: 50%;
  background: #313244;
  color: #cdd6f4;
  font-size: 16px;
  padding: 0;
  font-weight: 400;
  border: 2px solid #585b70;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
  display: flex; align-items: center; justify-content: center;
}
#btn-back-location:hover:not(:disabled) {
  background: #f9e2af; color: #1e1e2e; border-color: #f9e2af;
}
#btn-back-location:disabled {
  background: #1e1e2e; color: #45475a; border-color: #313244; box-shadow: none;
  cursor: not-allowed;
}

/* 歷史記錄 <details> */
#history-details {
  background: #1e1e2e;
  border-radius: 4px;
  padding: 6px 8px;
}
#history-details summary {
  font-size: 12px; color: #a6adc8; cursor: pointer;
  user-select: none; list-style: none; padding: 2px 0;
}
#history-details summary::-webkit-details-marker { display: none; }
#history-details summary::before { content: '▶ '; font-size: 10px; color: #585b70; }
#history-details[open] summary::before { content: '▼ '; }

/* 歷史清單 */
#history-list {
  list-style: none; display: flex; flex-direction: column;
  gap: 4px; margin-top: 6px; max-height: 180px; overflow-y: auto;
}
#history-list .history-item {
  display: flex; justify-content: space-between; align-items: center;
  background: #313244; padding: 4px 8px; border-radius: 4px;
  font-size: 12px; gap: 4px;
}
#history-list .history-item span {
  flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-family: 'Courier New', monospace; color: #cdd6f4;
}
#history-list .history-item .btn-load {
  padding: 2px 6px; background: #a6e3a1; color: #1e1e2e;
  font-size: 11px; flex-shrink: 0;
}

/* Google Places Autocomplete 深色主題 */
.pac-container {
  background: #313244;
  border: 1px solid #585b70;
  border-radius: 4px;
  font-family: system-ui, sans-serif;
}
.pac-item {
  color: #cdd6f4;
  border-top: 1px solid #45475a;
  padding: 6px 8px;
  cursor: pointer;
}
.pac-item:hover { background: #45475a; }
.pac-item-query { color: #89b4fa; }
.pac-icon { display: none; }

/* ── 遠端控制 ── */
#remote-status {
  font-size: 12px;
  color: #a6adc8;
  margin-top: 4px;
}
#remote-device-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  padding: 6px 10px;
  background: #313244;
  border-radius: 8px;
  font-size: 13px;
}
#btn-unpair {
  margin-left: auto;
  background: #f38ba8;
  color: #1e1e2e;
  border: none;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 11px;
  cursor: pointer;
}

/* ── Header row（標題 + 語系切換） ── */
#header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#header-row h2 { margin: 0; }
#btn-lang-toggle {
  background: transparent;
  color: #a6adc8;
  border: 1px solid #45475a;
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
}
#btn-lang-toggle:hover {
  background: #45475a;
  color: #cdd6f4;
}