:root {
  --bg: #f4f6f4;
  --surface: #ffffff;
  --surface-2: #eef1ee;
  --text: #1c2620;
  --muted: #5d6b62;
  --accent: #2f7d5b;
  --accent-strong: #1b3a2f;
  --danger: #b3402f;
  --border: #dde3de;
  --shadow: 0 2px 10px rgba(0,0,0,.08);
}
html.dark {
  --bg: #11140f;
  --surface: #1a1f18;
  --surface-2: #232a20;
  --text: #e7ede7;
  --muted: #9aa79d;
  --accent: #4fae7e;
  --accent-strong: #6fc99a;
  --danger: #e07a64;
  --border: #2c352a;
  --shadow: 0 2px 12px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: env(safe-area-inset-bottom);
  -webkit-tap-highlight-color: transparent;
}
a { color: var(--accent); }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: .6rem 1rem; background: var(--accent-strong); color: #fff;
  position: sticky; top: 0; z-index: 5;
}
.brand { font-weight: 700; font-size: 1.15rem; display: flex; gap: .4rem; align-items: center; }
.top-actions { display: flex; gap: .25rem; }
.icon-btn {
  -webkit-appearance: none; appearance: none;
  background: rgba(255,255,255,.12); border: 0; color: #fff;
  font-size: 1.1rem; line-height: 1; padding: 0; margin: 0;
  width: 2.2rem; height: 2.2rem; min-width: 2.2rem; border-radius: 50%;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
}
.icon-btn:hover { background: rgba(255,255,255,.25); }

/* Stats */
.stats {
  display: flex; justify-content: space-around; gap: .5rem;
  padding: 1rem; max-width: 640px; margin: 0 auto;
}
.stat { display: flex; flex-direction: column; align-items: center; }
.stat-num { font-size: 1.5rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.stat-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }

/* Spectrogram */
.spectrogram-wrap { max-width: 640px; margin: 0 auto; padding: 0 1rem; }
#spectrogram {
  width: 100%; height: 110px; border-radius: 10px;
  background: #05070a; display: block; box-shadow: var(--shadow);
}

/* Controls */
.controls { text-align: center; padding: 1.25rem 1rem .5rem; }
.toggle-btn {
  font-size: 1.2rem; font-weight: 700; color: #fff; background: var(--accent);
  border: 0; border-radius: 999px; padding: .9rem 3rem; cursor: pointer;
  box-shadow: var(--shadow); transition: background .15s, transform .1s;
}
.toggle-btn:hover:not(:disabled) { background: var(--accent-strong); }
.toggle-btn:active:not(:disabled) { transform: scale(.97); }
.toggle-btn:disabled { opacity: .5; cursor: default; }
.toggle-btn.listening { background: var(--danger); }
.status { color: var(--muted); font-size: .85rem; min-height: 1.2em; margin: .6rem 0 0; }
.status.error { color: var(--danger); }

/* Detection list */
main { max-width: 640px; margin: 0 auto; padding: .5rem 1rem 2rem; }
.detection-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .55rem; }
.detection {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; box-shadow: var(--shadow);
  animation: pop .2s ease; transition: border-color .15s, transform .1s;
}
.detection:hover { border-color: var(--accent); transform: translateY(-1px); }
@keyframes pop { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.row-link {
  display: flex; align-items: center; gap: .8rem; width: 100%;
  padding: .55rem .7rem; color: inherit; text-decoration: none;
}
.thumb {
  width: 52px; height: 52px; border-radius: 8px; flex: 0 0 auto;
  background: var(--surface-2) center / cover no-repeat;
  display: grid; place-items: center; font-size: 1.5rem;
}
.thumb::after { content: "🐦"; }
.thumb.has-photo::after { content: ""; }
.ext { flex: 0 0 auto; color: var(--muted); font-size: .9rem; opacity: .6; }
.info { flex: 1 1 auto; min-width: 0; }
.name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sci { font-size: .78rem; color: var(--muted); font-style: italic; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.meta { text-align: right; flex: 0 0 auto; }
.conf { font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.time { font-size: .72rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.count {
  flex: 0 0 auto; background: var(--surface-2); color: var(--muted);
  border-radius: 999px; padding: .2rem .55rem; font-size: .8rem; font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.empty-state { text-align: center; color: var(--muted); padding: 2rem 1rem; }
.hidden { display: none !important; }

/* Settings drawer */
.settings {
  position: fixed; top: 0; right: 0; height: 100%; width: min(360px, 88vw);
  background: var(--surface); box-shadow: -4px 0 18px rgba(0,0,0,.2);
  padding: 1.2rem 1.2rem 2rem; overflow-y: auto; z-index: 20;
  transform: translateX(100%); transition: transform .22s ease;
}
.settings.open { transform: none; }
.settings h2 { margin-top: .2rem; }
.scrim {
  position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 15;
  opacity: 0; pointer-events: none; transition: opacity .22s;
}
.scrim.show { opacity: 1; pointer-events: auto; }

.field { display: flex; flex-direction: column; gap: .35rem; margin: 1.1rem 0; }
.field-label { font-weight: 600; display: flex; justify-content: space-between; align-items: baseline; }
.field-label em { font-style: normal; color: var(--accent); font-weight: 700; }
.field small { color: var(--muted); font-size: .76rem; line-height: 1.3; }
.field-row { flex-direction: row; flex-wrap: wrap; align-items: center; gap: .6rem; }
.field-row .field-label { flex: 1 1 auto; }
.field-row small { flex-basis: 100%; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
input[type="checkbox"] { width: 1.2rem; height: 1.2rem; accent-color: var(--accent); }
select, input[type="number"] {
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: .5rem; font-size: 1rem;
}
.geo-inputs { display: flex; gap: .4rem; flex-wrap: wrap; }
.geo-inputs input { flex: 1 1 6rem; min-width: 0; }
.small-btn {
  background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: .5rem .8rem; cursor: pointer; font-size: .85rem;
}
.credit { color: var(--muted); font-size: .72rem; margin-top: 1.5rem; line-height: 1.4; }

/* Loading overlay */
.loading-overlay {
  position: fixed; inset: 0; background: var(--accent-strong); color: #fff;
  display: grid; place-items: center; z-index: 50; transition: opacity .3s;
}
.loading-card { text-align: center; padding: 2rem; max-width: 340px; }
.loading-card .logo { font-size: 3rem; }
.loading-card h1 { margin: .3rem 0 1.2rem; }
.loading-card small { display: block; margin-top: 1rem; opacity: .75; font-size: .76rem; }
.progress { background: rgba(255,255,255,.2); border-radius: 999px; height: 10px; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: #fff; border-radius: 999px; transition: width .25s; }