:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1b1f24;
  --muted: #667085;
  --line: #e3e6ea;
  --accent: #2f6fde;
  --accent-soft: #e6eefc;
  --ok: #1f8a4c;
  --warn: #b25e09;
  --danger: #c4372b;
  --wave: #9db5e3;
  --wave-played: #2f6fde;
  --radius: 8px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171b;
    --panel: #1c2026;
    --text: #e6e8eb;
    --muted: #8b939e;
    --line: #2c323a;
    --accent: #6b9cf5;
    --accent-soft: #233150;
    --ok: #4cc283;
    --warn: #e5a04e;
    --danger: #f07167;
    --wave: #3b4f78;
    --wave-played: #6b9cf5;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
}

button, input, textarea { font: inherit; color: inherit; }

code, pre, kbd { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }

[hidden] { display: none !important; }

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.topbar h1 { font-size: 15px; margin: 0; font-weight: 650; }

.remote {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex: 1;
}

.labeller { display: flex; align-items: center; gap: 8px; color: var(--muted); }
.labeller input { width: 150px; }

input[type="text"], input[type="search"], textarea {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 9px;
  outline: none;
}
input[type="text"]:focus, input[type="search"]:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.labeller input.missing { border-color: var(--warn); }

button {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.primary:hover:not(:disabled) { filter: brightness(1.08); }
button.ghost { background: transparent; }
button.small { padding: 3px 9px; font-size: 12.5px; }

/* ---------- modes ---------- */

body[data-mode="annotate"] .browse-only,
body[data-mode="browse"] .annotate-only,
body:not([data-mode]) .annotate-only { display: none !important; }

.mode-badge {
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12.5px;
  font-weight: 600;
  background: var(--accent-soft);
  border-color: transparent;
  color: var(--accent);
}

.modes { max-width: 720px; width: 100%; }
.modes h2 { font-size: 18px; margin: 0 0 16px; text-align: center; }
.mode-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.mode-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
  padding: 22px 22px 24px;
  border-radius: 12px;
  background: var(--panel);
}
.mode-card:hover:not(:disabled) { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.mode-title { font-size: 17px; font-weight: 650; }
.mode-text { color: var(--muted); }
.mode-status { color: var(--muted); text-align: center; min-height: 1.4em; margin-top: 14px; }

/* ---------- connect view ---------- */

.connect { flex: 1; display: grid; place-items: center; padding: 24px 16px; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px 28px;
  max-width: 620px;
  width: 100%;
}
.card h2 { margin: 0 0 6px; font-size: 18px; }
.card p { color: var(--muted); margin: 0 0 12px; }
.steps { padding-left: 20px; margin: 16px 0; }
.steps li { margin-bottom: 12px; }
.steps pre {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  margin: 6px 0 0;
  overflow-x: auto;
}
.steps var { color: var(--accent); font-style: normal; }
.steps a { color: var(--accent); }
.connect-form { display: flex; gap: 8px; }
.connect-form input { flex: 1; min-width: 0; }
.error { color: var(--danger); min-height: 1.4em; margin-top: 10px !important; }

/* ---------- workspace ---------- */

.workspace {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  min-height: 0;
}

.browser {
  background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.browser-tools { display: flex; align-items: center; gap: 8px; padding: 12px 12px 8px; }
.browser-tools input { flex: 1; min-width: 0; }
.progress { color: var(--muted); font-size: 12px; white-space: nowrap; }

.files { list-style: none; margin: 0; padding: 0 6px 12px; overflow-y: auto; flex: 1; }
.files li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
}
.files li:hover { background: var(--bg); }
.files li.active { background: var(--accent-soft); }
.files .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files .lines { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.files .lines .name { flex: none; }
.files .sub { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files .icon { width: 14px; text-align: center; color: var(--muted); flex: none; }
.files .dot { align-self: center; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--muted); flex: none; }
.files .dot.done { background: var(--ok); border-color: var(--ok); }
.files .size { color: var(--muted); font-size: 11.5px; }
.files .dot.none { border-style: dashed; }
.files li.missing .name { color: var(--muted); }
.files .placeholder { color: var(--muted); cursor: default; }
.files .placeholder:hover { background: none; }

.editor { overflow-y: auto; padding: 18px 24px 32px; min-width: 0; }
.empty { color: var(--muted); display: grid; place-items: center; height: 60%; }

.file-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.file-head h2 { margin: 0; font-size: 17px; word-break: break-all; }
.meta { color: var(--muted); font-size: 12.5px; }
.nav-buttons { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.nav-buttons .check { margin-right: 6px; color: var(--muted); }

.meta-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 14px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.meta-body { flex: 1; min-width: 0; }
.photo {
  flex: none;
  width: 260px;
  padding: 0;
  border: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg);
  cursor: zoom-in;
}
.photo img { display: block; width: 100%; height: auto; max-height: 260px; object-fit: cover; }
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .85);
  display: grid;
  place-items: center;
  padding: 24px;
  cursor: zoom-out;
  z-index: 10;
}
.lightbox img { max-width: 100%; max-height: 100%; object-fit: contain; }
.meta-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 16px;
  margin: 0;
}
.meta-list dt { color: var(--muted); }
.meta-list dd { margin: 0; }
.meta-flags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 10px; }
.meta-flags:empty { display: none; }
.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 9px;
  font-size: 12px;
  color: var(--muted);
}
.chip.warn { border-color: var(--warn); color: var(--warn); font-weight: 600; }
.chip-detail { color: var(--warn); font-size: 12.5px; }

.no-audio {
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 0;
  color: var(--muted);
}

.player, .notes {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.wave-wrap { position: relative; }
.wave { width: 100%; height: 110px; display: block; cursor: pointer; border-radius: 6px; background: var(--bg); }
body[data-mode="annotate"] .wave { height: 28px; background: none; }
body[data-mode="annotate"] .load-status { position: static; display: block; text-align: center; min-height: 1.2em; }
.load-status {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  pointer-events: none;
  font-size: 13px;
}

.transport { display: flex; align-items: center; gap: 16px; margin-top: 12px; flex-wrap: wrap; }
.play {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  padding: 0;
  background: var(--accent);
  border-color: var(--accent);
}
.play svg { fill: #fff; }
.time { font-variant-numeric: tabular-nums; min-width: 92px; }
.check { display: flex; align-items: center; gap: 5px; }

.segmented { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.segmented label { padding: 4px 10px; cursor: pointer; }
.segmented input { display: none; }
.segmented label:has(input:checked) { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.slider { display: flex; align-items: center; gap: 8px; color: var(--muted); }
.slider input { width: 120px; accent-color: var(--accent); }
.slider output { color: var(--text); font-variant-numeric: tabular-nums; min-width: 40px; }

.spatial {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.dial { width: 180px; height: 180px; cursor: grab; touch-action: none; flex: none; }
.dial:active { cursor: grabbing; }
.spatial-controls { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.spatial-controls .slider input { width: 200px; }
.doa { margin: 0; font-variant-numeric: tabular-nums; min-height: 1.4em; }
.hint { margin: 0; color: var(--muted); font-size: 12.5px; max-width: 320px; }

.notes { margin-top: 16px; }
.notes-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 8px; }
.notes-head h3 { margin: 0; font-size: 14px; }
.note-status { color: var(--muted); font-size: 12.5px; }
.note-status.dirty { color: var(--warn); }
.note-status.saved { color: var(--ok); }
.note-status.error { color: var(--danger); }
.notes textarea { width: 100%; min-height: 180px; resize: vertical; line-height: 1.5; }
.notes-list { display: flex; flex-direction: column; gap: 10px; }
.annotation { border-left: 3px solid var(--accent-soft); padding: 2px 0 2px 12px; }
.annotation header { display: flex; gap: 10px; align-items: baseline; font-size: 12.5px; }
.annotation header span { color: var(--muted); }
.annotation p { margin: 4px 0 0; white-space: pre-wrap; }
.notes-actions { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.keys { color: var(--muted); font-size: 12px; flex: 1; }
kbd {
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0 4px;
  font-size: 11px;
  background: var(--bg);
}

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--panel);
  padding: 8px 14px;
  border-radius: 6px;
  max-width: calc(100% - 32px);
  box-shadow: 0 6px 20px rgba(0,0,0,.2);
}

/* ---------- narrow screens ---------- */

@media (max-width: 760px) {
  .topbar { flex-wrap: wrap; }
  .remote { order: 3; flex-basis: 100%; }
  .workspace { grid-template-columns: 1fr; grid-template-rows: 38vh 1fr; }
  .browser { border-right: 0; border-bottom: 1px solid var(--line); }
  .editor { padding: 14px 16px 24px; }
  .spatial { flex-direction: column; align-items: flex-start; }
  .spatial-controls .slider input { width: 150px; }
  .keys { display: none; }
  .meta-list { grid-template-columns: 1fr; gap: 0; }
  .meta-card { flex-direction: column; }
  .photo { width: 100%; }
  .mode-cards { grid-template-columns: 1fr; }
  .meta-list dd { margin-bottom: 6px; }
}