:root {
  --bg: #fbfbfa;
  --panel: #ffffff;
  --panel-2: #f4f4f2;
  --line: #e4e3df;
  --line-strong: #d3d2cc;
  --ink: #1c1c1a;
  --ink-dim: #6b6b64;
  --ink-faint: #9d9c95;
  --accent: #7C3AED;
  --accent-soft: #f5f3ff;
  --ca: #E11D48;
  --ca-soft: #fff1f2;
  --ca-mid: #fda4af;
  --cb: #2563EB;
  --cb-soft: #eff6ff;
  --cb-mid: #93c5fd;
  --teal: #0ea88e;
  --red: #dc2626;
  --radius: 12px;
  --disp: 'Space Grotesk', sans-serif;
  --body: 'IBM Plex Sans', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--body); }
::selection { background: var(--accent-soft); color: var(--accent); }

.ab-wrap { max-width: 860px; margin: 0 auto; }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px 24px;
  margin-bottom: 16px; box-shadow: 0 1px 4px rgba(0,0,0,.04);
}

/* ── Upload zones ─────────────────────────────────────── */
.zones-row {
  display: flex; align-items: stretch; gap: 0;
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line);
  margin-bottom: 14px;
  box-shadow: 0 1px 4px rgba(0,0,0,.04);
}

.drop-zone {
  flex: 1; padding: 40px 28px; text-align: center;
  background: var(--panel); cursor: pointer;
  transition: background .15s;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.drop-zone:hover { background: var(--panel-2); }
.drop-zone.drag-over { background: var(--accent-soft); border-color: var(--accent); }
.drop-zone.loaded-a { background: var(--ca-soft); }
.drop-zone.loaded-b { background: var(--cb-soft); }

.zone-badge {
  width: 52px; height: 52px; border-radius: 50%;
  font-family: var(--disp); font-size: 22px; font-weight: 800;
  display: flex; align-items: center; justify-content: center; color: #fff;
}
.a-badge { background: var(--ca); }
.b-badge { background: var(--cb); }

.zone-text { font-family: var(--body); font-size: 14px; color: var(--ink-dim); line-height: 1.6; }
.zone-link { color: var(--accent); text-decoration: underline; cursor: pointer; }
.zone-status { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.vs-divider {
  width: 52px; flex-shrink: 0;
  background: var(--panel-2); border-left: 1px solid var(--line); border-right: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--disp); font-size: 13px; font-weight: 800; color: var(--ink-faint);
  letter-spacing: 1px;
}

.upload-hint { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); text-align: center; }

@media (max-width: 600px) {
  .zones-row { flex-direction: column; }
  .vs-divider { width: 100%; height: 36px; border-left: none; border-right: none; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
}

/* ── Loading ──────────────────────────────────────────── */
.loading-inner {
  display: flex; align-items: center; gap: 10px; justify-content: center;
  padding: 28px; font-family: var(--mono); font-size: 13px; color: var(--ink-dim);
}
.spinner {
  width: 18px; height: 18px; border: 2.5px solid var(--line-strong);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Info bar ─────────────────────────────────────────── */
.info-bar { display: flex; gap: 16px; flex-wrap: wrap; padding: 16px 20px; }
.info-slot { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 200px; }
.slot-badge { width: 32px; height: 32px; border-radius: 8px; font-family: var(--disp); font-size: 14px; font-weight: 800; color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.slot-name { font-family: var(--mono); font-size: 12.5px; font-weight: 700; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 220px; }
.slot-meta { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); margin-top: 2px; }

/* ── Player card ──────────────────────────────────────── */
.player-card { padding: 20px 22px; }

.ab-toggle-row { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.now-playing-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: 1px; text-transform: uppercase; color: var(--ink-faint); }

.ab-toggle { display: flex; border: 1px solid var(--line-strong); border-radius: 8px; overflow: hidden; }
.ab-btn {
  flex: 1; padding: 10px 26px; border: none; cursor: pointer;
  font-family: var(--disp); font-size: 16px; font-weight: 800;
  background: var(--panel-2); color: var(--ink-faint);
  transition: all .15s; letter-spacing: .5px;
}
.ab-btn-a.active { background: var(--ca); color: #fff; }
.ab-btn-b.active { background: var(--cb); color: #fff; }
.ab-btn:hover:not(.active) { background: var(--line); color: var(--ink); }

.listening-badge {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--ink-dim);
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.a-dot { background: var(--ca); }
.b-dot { background: var(--cb); }

/* Transport */
.transport-row { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.tport-btn {
  width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--line-strong);
  background: var(--panel-2); color: var(--ink); cursor: pointer; font-size: 13px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: all .1s;
}
.tport-btn:hover { border-color: var(--accent); color: var(--accent); }
.tport-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.seek-bar {
  flex: 1; -webkit-appearance: none; appearance: none;
  height: 4px; background: var(--line-strong); border-radius: 2px;
  outline: none; cursor: pointer;
}
.seek-bar::-webkit-slider-thumb {
  -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 2px solid var(--accent); cursor: pointer;
  box-shadow: 0 1px 4px rgba(124,58,237,.2);
}
.seek-bar::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 2px solid var(--accent); cursor: pointer; }

.time-lbl { font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--ink-dim); white-space: nowrap; }
.time-sep { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }

/* Options */
.options-row { display: flex; gap: 8px; flex-wrap: wrap; }
.opt-btn {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  padding: 6px 12px; border-radius: 6px; border: 1px solid var(--line-strong);
  background: var(--panel-2); color: var(--ink-dim); cursor: pointer; transition: all .1s;
}
.opt-btn:hover { border-color: var(--accent); color: var(--accent); }
.opt-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.opt-btn.danger:hover { border-color: var(--red); color: var(--red); }

/* ── Waveform ─────────────────────────────────────────── */
.wave-card { padding: 18px 20px; }
.wave-row-wrap { display: flex; align-items: center; gap: 10px; }
.wave-label {
  font-family: var(--disp); font-size: 14px; font-weight: 800;
  width: 18px; text-align: center; flex-shrink: 0;
}
.a-text { color: var(--ca); }
.b-text { color: var(--cb); }

.wave-container {
  flex: 1; position: relative;
  border-radius: 6px; overflow: hidden;
  background: #100010;
}
.wave-bg-canvas, .wave-head-canvas {
  display: block; width: 100%;
}
.wave-head-canvas {
  position: absolute; top: 0; left: 0;
  pointer-events: none;
}

/* ── Stats ────────────────────────────────────────────── */
.stats-card { display: flex; gap: 0; padding: 0; }
.stats-col { flex: 1; padding: 18px 20px; }
.stats-divider { width: 1px; background: var(--line); flex-shrink: 0; }
.stats-heading { font-family: var(--disp); font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.stat-item { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 11.5px; padding: 5px 0; border-bottom: 1px solid var(--line); gap: 8px; }
.stat-lbl { color: var(--ink-faint); flex-shrink: 0; }
.stat-val { color: var(--ink); font-weight: 600; text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 160px; }

/* ── Blind test ───────────────────────────────────────── */
.blind-card { padding: 20px 22px; }
.blind-header { display: flex; align-items: baseline; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.blind-title { font-family: var(--disp); font-size: 15px; font-weight: 700; color: var(--ink); }
.blind-sub { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }

.blind-vote-row { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.vote-btn {
  flex: 1; padding: 12px 16px; border-radius: 8px; border: 2px solid var(--line-strong);
  font-family: var(--disp); font-size: 15px; font-weight: 800; cursor: pointer;
  background: var(--panel-2); color: var(--ink); transition: all .15s;
  min-width: 120px;
}
.vote-btn:hover { transform: translateY(-1px); box-shadow: 0 3px 10px rgba(0,0,0,.1); }
.vote-1:hover, .vote-1.chosen { background: var(--ca); border-color: var(--ca); color: #fff; }
.vote-2:hover, .vote-2.chosen { background: var(--cb); border-color: var(--cb); color: #fff; }
.vote-tie:hover, .vote-tie.chosen { background: var(--accent); border-color: var(--accent); color: #fff; }
.vote-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }

.blind-reveal { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; flex-wrap: wrap; }
.reveal-msg {
  flex: 1; font-family: var(--mono); font-size: 12.5px; color: var(--ink-dim);
  background: var(--panel-2); border-radius: 8px; padding: 10px 14px; border: 1px solid var(--line);
}
.reveal-msg strong { color: var(--accent); }
.blind-new-round-btn {
  padding: 9px 18px; border-radius: 8px; border: 1px solid var(--line-strong);
  background: var(--panel-2); color: var(--ink-dim); font-family: var(--mono); font-size: 12px; font-weight: 700;
  cursor: pointer; transition: all .1s; white-space: nowrap;
}
.blind-new-round-btn:hover { border-color: var(--accent); color: var(--accent); }

.score-row { display: flex; gap: 12px; flex-wrap: wrap; }
.score-item {
  flex: 1; text-align: center; padding: 10px 8px; border-radius: 8px;
  background: var(--panel-2); border: 1px solid var(--line);
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-dim); line-height: 1.8;
  min-width: 70px;
}
.score-item strong { display: block; font-size: 22px; font-weight: 800; line-height: 1.1; color: var(--ink); }
.score-item.a-text strong { color: var(--ca); }
.score-item.b-text strong { color: var(--cb); }
.score-item.dim strong { color: var(--ink-dim); }