:root {
  --bg: #f7f7f8;
  --panel: #ffffff;
  --sunken: #f0f0f2;
  --border: #e2e2e6;
  --text: #18181b;
  --muted: #6b6b76;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --ok: #15803d;
  --ok-bg: #dcfce7;
  --bad: #b91c1c;
  --bad-bg: #fee2e2;
  --warn: #a16207;
  --warn-bg: #fef3c7;
  --info: #1d4ed8;
  --info-bg: #dbeafe;
  --neutral-bg: #ececef;
  --ins-bg: #bbf7d0;
  --del-bg: #fecaca;
  --mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --panel: #18181b;
    --sunken: #1f1f23;
    --border: #2e2e33;
    --text: #ececef;
    --muted: #9b9ba5;
    --accent: #3b82f6;
    --ok: #4ade80;
    --ok-bg: #14532d66;
    --bad: #f87171;
    --bad-bg: #7f1d1d66;
    --warn: #fbbf24;
    --warn-bg: #78350f66;
    --info: #93c5fd;
    --info-bg: #1e3a8a66;
    --neutral-bg: #2a2a30;
    --ins-bg: #14532d;
    --del-bg: #7f1d1d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); }

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

button {
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 6px;
  padding: 6px 12px;
}
button:hover { background: var(--sunken); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.primary:hover { filter: brightness(1.08); }
button.ghost { background: transparent; border-color: transparent; }
button.small { padding: 3px 8px; font-size: 13px; }
button:disabled { opacity: 0.6; cursor: default; }

input[type=text], input[type=password], input[type=search], select, textarea {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  width: 100%;
}
textarea { font-family: var(--mono); font-size: 12.5px; resize: vertical; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.brand { font-weight: 650; text-decoration: none; color: var(--text); font-size: 15px; }
.brand span { color: var(--muted); font-weight: 450; }

main { flex: 1; min-height: 0; }

/* Login */
.login {
  max-width: 380px;
  margin: 12vh auto 0;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.login h1 { font-size: 18px; margin: 0 0 4px; }
.login p { color: var(--muted); margin: 0 0 16px; }
.login form { display: grid; gap: 10px; }

/* Layout */
.layout {
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  height: 100%;
}
.pane { overflow-y: auto; min-height: 0; }
.list-pane { border-right: 1px solid var(--border); background: var(--panel); display: flex; flex-direction: column; }
.detail-pane { padding: 20px 24px 48px; }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .list-pane { border-right: 0; }
  .layout.has-detail .list-pane { display: none; }
  .layout:not(.has-detail) .detail-pane { display: none; }
  .detail-pane { padding: 16px; }
}

.filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 10px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--panel);
  z-index: 1;
}
.filters input { grid-column: 1 / -1; }
.count { color: var(--muted); font-size: 12px; grid-column: 1 / -1; }

.sessions { list-style: none; margin: 0; padding: 0; }
.sessions li a {
  display: block;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: inherit;
  text-decoration: none;
}
.sessions li a:hover { background: var(--sunken); }
.sessions li a.selected { background: var(--info-bg); }
.row-head { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.snippet {
  margin-top: 3px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}
.snippet.empty { color: var(--muted); font-style: italic; }
.more { margin: 10px; }

.chip {
  display: inline-block;
  font-size: 11.5px;
  line-height: 1.6;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--neutral-bg);
  color: var(--text);
  white-space: nowrap;
}
.chip.ok { background: var(--ok-bg); color: var(--ok); }
.chip.bad { background: var(--bad-bg); color: var(--bad); }
.chip.warn { background: var(--warn-bg); color: var(--warn); }
.chip.info { background: var(--info-bg); color: var(--info); }

/* Detail */
.empty-state { color: var(--muted); margin-top: 20vh; text-align: center; }
.back { display: none; margin-bottom: 10px; }
@media (max-width: 800px) { .back { display: inline-block; } }

.detail-head h1 { font-size: 18px; margin: 0 0 6px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.meta { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px 20px; margin: 12px 0 0; font-size: 13px; }
.meta dt { color: var(--muted); font-size: 12px; }
.meta dd { margin: 0; overflow-wrap: anywhere; }
.mono { font-family: var(--mono); font-size: 12.5px; }

section { margin-top: 26px; }
section > h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); margin: 0 0 10px; font-weight: 600; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 10px;
}
.card.replay { border-color: var(--accent); }
.card.superseded { opacity: 0.7; }
.card-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); margin-bottom: 6px; }
.card-head .spacer { flex: 1; }

.text { white-space: pre-wrap; overflow-wrap: anywhere; }
.label { font-size: 12px; color: var(--muted); margin: 8px 0 2px; }
.errorbox { background: var(--bad-bg); color: var(--bad); border-radius: 6px; padding: 8px 10px; margin-top: 8px; white-space: pre-wrap; overflow-wrap: anywhere; }

details { margin-top: 6px; }
details > summary { cursor: pointer; color: var(--muted); font-size: 12.5px; user-select: none; }
details > summary:hover { color: var(--text); }
pre {
  background: var(--sunken);
  border-radius: 6px;
  padding: 8px 10px;
  margin: 6px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 420px;
  overflow-y: auto;
}

audio { width: 100%; max-width: 560px; }

.events { width: 100%; border-collapse: collapse; font-size: 13px; }
.events td { padding: 3px 8px 3px 0; vertical-align: top; border-bottom: 1px solid var(--border); }
.events td.t { color: var(--muted); white-space: nowrap; font-family: var(--mono); font-size: 12px; }
.events tr.partial td.txt { color: var(--muted); }

/* Replay form */
.replay-form { display: grid; gap: 10px; }
.field-head { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.field-head label { font-weight: 550; font-size: 13px; margin-right: auto; }
.hint { color: var(--muted); font-size: 12px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 600px) { .row2 { grid-template-columns: 1fr; } }
.check { display: flex; gap: 6px; align-items: center; font-size: 13px; }
.actions { display: flex; gap: 10px; align-items: center; }
.actions.export { margin-top: 10px; }

.diff { white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.7; }
ins { background: var(--ins-bg); text-decoration: none; border-radius: 3px; }
del { background: var(--del-bg); border-radius: 3px; }
.same-note { color: var(--ok); font-size: 13px; }