:root {
  --bg: #f4f4f2;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-solid: #ffffff;
  --text: #16161a;
  --muted: #6b6b75;
  --line: rgba(0, 0, 0, 0.08);
  --hover: rgba(0, 0, 0, 0.045);
  --accent: #e5484d;
  --accent-soft: rgba(229, 72, 77, 0.16);
  --accent-text: #ffffff;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.08);
  --tiles: grayscale(0.85) contrast(0.9) brightness(1.04);
  --radius: 16px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1b1f;
    --surface: rgba(28, 28, 32, 0.92);
    --surface-solid: #1f1f24;
    --text: #ececf1;
    --muted: #9a9aa5;
    --line: rgba(255, 255, 255, 0.09);
    --hover: rgba(255, 255, 255, 0.06);
    --accent: #ff6369;
    --accent-soft: rgba(255, 99, 105, 0.2);
    --accent-text: #1b1b1f;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.4);
    --tiles: grayscale(1) invert(1) brightness(0.82) contrast(0.85);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
}

button { font: inherit; color: inherit; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.muted { color: var(--muted); }

#map {
  position: fixed;
  inset: 0;
  background: var(--bg);
}

/* ---------- panel ---------- */

.panel {
  position: fixed;
  z-index: 1000;
  top: 16px;
  left: 16px;
  bottom: 16px;
  width: 340px;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-head { padding: 16px 16px 12px; }

.sheet-toggle { display: none; }

.title-row { display: flex; flex-direction: column; gap: 2px; }

h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
h1 a { color: inherit; text-decoration: none; }
h1 span { color: var(--muted); font-weight: 500; }
h1 .stats-link { margin-left: 6px; font-size: 13px; font-weight: 500; color: var(--accent); }
h1 .stats-link:hover { text-decoration: underline; }

.stats { margin: 0; font-size: 12px; color: var(--muted); }

.search {
  width: 100%;
  margin-top: 12px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--hover);
  color: var(--text);
  font: inherit;
  outline: none;
}
.search:focus { border-color: var(--accent); background: transparent; }

.panel-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 8px 12px;
}

.tabs {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  gap: 4px;
  padding: 0 8px 8px;
  background: var(--surface-solid);
  background: linear-gradient(var(--surface-solid) 80%, transparent);
}
.tab {
  flex: 1;
  padding: 6px 10px;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
}
.tab span { font-size: 12px; opacity: 0.7; }
.tab[aria-selected="true"] { background: var(--hover); color: var(--text); font-weight: 600; }

/* ---------- lists ---------- */

.list { list-style: none; margin: 0; padding: 0; }

.city {
  margin: 14px 8px 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.item {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 8px;
  border: 0;
  border-radius: 8px;
  background: none;
  text-align: left;
  cursor: pointer;
}
.item:hover, .item:focus-visible { background: var(--hover); outline: none; }
.item .count {
  flex: none;
  min-width: 24px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--hover);
  color: var(--muted);
  font-size: 12px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.empty { padding: 16px 8px; }

/* ---------- artist detail ---------- */

.detail { padding: 0 8px; }
.back {
  margin: 0 0 8px -8px;
  padding: 4px 8px;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--accent);
  cursor: pointer;
}
.back:hover { background: var(--hover); }
.detail h2 { margin: 0; font-size: 20px; letter-spacing: -0.01em; }
.detail .muted { margin: 2px 0 12px; font-size: 13px; }

.concert-list { list-style: none; margin: 0; padding: 0; }
.concert-list .item { align-items: baseline; justify-content: flex-start; margin-left: -8px; width: calc(100% + 16px); }
.concert-list time {
  flex: none;
  width: 84px;
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.concert-list small { display: block; color: var(--muted); }

/* ---------- markers & clusters ---------- */

.pin {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--surface-solid);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
  transition: transform 0.15s;
}
.pin:hover { transform: scale(1.25); }
.pin.approx { border-style: dashed; border-color: var(--accent); background: var(--accent-soft); }

.cluster {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 650;
  font-size: 13px;
  box-shadow: 0 0 0 6px var(--accent-soft), 0 2px 6px rgba(0, 0, 0, 0.25);
  font-variant-numeric: tabular-nums;
}

/* ---------- leaflet overrides ---------- */

.leaflet-container { font: inherit; background: var(--bg); }
.leaflet-tile-pane { filter: var(--tiles); }

.leaflet-bar, .leaflet-bar a {
  border: 0 !important;
  background: var(--surface-solid);
  color: var(--text);
}
.leaflet-bar { border-radius: 10px !important; overflow: hidden; box-shadow: var(--shadow) !important; }
.leaflet-bar a:hover { background: var(--hover); color: var(--text); }

.leaflet-control-attribution {
  background: var(--surface) !important;
  color: var(--muted);
  border-radius: 6px 0 0 0;
}
.leaflet-control-attribution a { color: inherit; }

.leaflet-popup-content-wrapper, .leaflet-popup-tip {
  background: var(--surface-solid);
  color: var(--text);
  box-shadow: var(--shadow);
}
.leaflet-popup-content-wrapper { border-radius: 14px; }
.leaflet-popup-content { margin: 14px 16px; font-size: 14px; line-height: 1.4; min-width: 220px; }
.leaflet-container a.leaflet-popup-close-button { color: var(--muted); top: 6px; right: 6px; }

.popup h3 { margin: 0 20px 0 0; font-size: 16px; }
.popup .sub { margin: 0 0 10px; color: var(--muted); font-size: 13px; }
.popup ol {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 240px;
  overflow-y: auto;
}
.popup li {
  display: flex;
  gap: 10px;
  padding: 4px 6px;
  margin: 0 -6px;
  border-radius: 6px;
}
.popup li.hit { background: var(--accent-soft); }
.popup time { flex: none; width: 78px; color: var(--muted); font-variant-numeric: tabular-nums; }
.popup small { display: block; color: var(--muted); }
.popup .artist {
  padding: 0;
  border: 0;
  background: none;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
}
.popup .artist:hover { color: var(--accent); text-decoration-color: currentColor; }
.popup .approx-note { margin: 10px 0 0; font-size: 12px; color: var(--muted); }

/* ---------- mobile: bottom sheet ---------- */

@media (max-width: 720px) {
  .panel {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    max-height: 70vh;
    border-radius: var(--radius) var(--radius) 0 0;
    border-width: 1px 0 0;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .panel-head { padding: 4px 16px 12px; }
  .sheet-toggle {
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 6px 0 10px;
    border: 0;
    background: none;
    cursor: pointer;
  }
  .grabber { width: 40px; height: 5px; border-radius: 3px; background: var(--muted); opacity: 0.4; }
  .panel-body { display: none; }
  .panel.open .panel-body { display: block; height: 55vh; }
  .leaflet-bottom { bottom: var(--sheet-h, 0px); }
  .leaflet-popup-content { min-width: 200px; }
}