:root[data-theme="light"] {
  --bg: #f2f5f9;
  --bg-elevated: #ffffff;
  --text: #10151b;
  --text-muted: #5b6b7c;
  --accent: #1c6fd6;
  --border: #dbe3ec;
  --danger: #c62828;
  --danger-bg: #fdecea;
}

:root[data-theme="dark"] {
  /* Pure black background per OLED-battery-saving request */
  --bg: #000000;
  --bg-elevated: #111417;
  --text: #f2f5f9;
  --text-muted: #99a6b3;
  --accent: #5aa2f0;
  --border: #24292f;
  --danger: #ff6b6b;
  --danger-bg: #2a1414;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header.app-header {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.app-logo {
  height: 28px;
  width: auto;
  display: block;
}

#location-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

main {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  padding-bottom: 5rem;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

nav.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}

nav.tab-bar button {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 0.6rem 0 0.5rem;
  font-size: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  cursor: pointer;
}

nav.tab-bar button .tab-icon {
  font-size: 1.2rem;
}

nav.tab-bar button.active {
  color: var(--accent);
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.card h2 {
  font-size: 0.95rem;
  margin: 0 0 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.alert-banner {
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 10px;
  padding: 0.6rem 0.8rem;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.stale-banner {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 10px;
  padding: 0.5rem 0.8rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
  display: none;
}

.stale-banner.visible {
  display: block;
}

.current-conditions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.current-conditions .symbol {
  font-size: 3rem;
  line-height: 1;
}

.current-conditions .temp {
  font-size: 2.5rem;
  font-weight: 600;
}

.current-conditions .meta {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.upcoming-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.75rem;
}

.upcoming-grid .item {
  text-align: center;
}

.upcoming-grid .item .label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.upcoming-grid .item .value {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0.25rem 0;
}

.upcoming-grid .item .sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.radar-box img {
  width: 100%;
  border-radius: 8px;
  display: block;
}

.hourly-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.hourly-inner {
  min-width: 100%;
}

.hourly-columns {
  display: flex;
}

.hourly-col {
  width: 62px;
  flex: 0 0 62px;
  text-align: center;
  font-size: 0.75rem;
  padding-top: 0.25rem;
}

.hourly-symbol {
  font-size: 1.4rem;
}

.hourly-pop {
  color: var(--accent);
  min-height: 1.1em;
}

.hourly-rh {
  color: var(--text-muted);
}

.hourly-wind {
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 0.15rem;
}

.hourly-wind .wind-arrow {
  display: inline-block;
  font-size: 0.9rem;
}

.hourly-time {
  color: var(--text-muted);
  margin-top: 0.35rem;
  border-top: 1px solid var(--border);
  padding-top: 0.25rem;
}

.daily-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.daily-columns {
  display: flex;
}

.daily-col {
  width: 68px;
  flex: 0 0 68px;
  text-align: center;
  font-size: 0.8rem;
}

.daily-day-label {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.daily-symbol {
  font-size: 1.5rem;
  line-height: 1.3;
}

.daily-symbol-night {
  font-size: 1.15rem;
  opacity: 0.85;
}

.daily-precip-label {
  color: var(--accent);
  font-size: 0.7rem;
  min-height: 1.1em;
  margin-bottom: 0.15rem;
}

.daily-high {
  font-weight: 600;
}

.daily-bar-track {
  position: relative;
  width: 6px;
  margin: 0.35rem auto;
  border-radius: 3px;
  background: var(--border);
}

.daily-bar {
  position: absolute;
  left: 0;
  width: 100%;
  border-radius: 3px;
  background: linear-gradient(to bottom, #f2b705, #5aa2f0);
}

.daily-low {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.card label {
  display: inline-block;
  padding: 0.15rem 0;
}

.favorite-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
}

.favorite-row button {
  background: none;
  border: 1px solid var(--border);
  color: var(--danger);
  border-radius: 6px;
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  cursor: pointer;
}

.add-favorite {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.add-favorite input {
  flex: 1;
  padding: 0.4rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

.add-favorite button {
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.geocode-result {
  margin-top: 0.4rem;
}

.add-result-btn {
  width: 100%;
  text-align: left;
  padding: 0.4rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 0.8rem;
}

.map-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
}

.map-controls button {
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 0.85rem;
}

.leaflet-control-layers,
.leaflet-bar {
  color: #10151b;
}

.loading,
.error {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 1rem 0;
}

.error {
  color: var(--danger);
}