:root {
  --bg: #12141c;
  --card: #1b1e2b;
  --accent: #ef7c00;
  --accent2: #00a4e8;
  --text: #e8e9ef;
  --muted: #8b8fa3;
  --danger: #e0435c;
  --border: #2a2e40;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 28px 24px 12px;
  text-align: center;
}
header h1 { margin: 0; font-size: 1.8rem; }
.subtitle { color: var(--muted); margin: 4px 0 0; }

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
}
.card h2 { margin: 0 0 12px; font-size: 1.05rem; }
.hint { color: var(--muted); font-weight: normal; font-size: 0.8rem; }

.row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.row:last-child { margin-bottom: 0; }

.btn {
  background: var(--accent2);
  color: #041018;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.btn:hover { filter: brightness(1.1); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-small { padding: 6px 12px; font-size: 0.85rem; }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-record { background: var(--accent); color: #1a0f00; }
.btn-record.recording { background: var(--danger); color: white; animation: pulse 1.2s infinite; }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(224,67,92,0.5); }
  70% { box-shadow: 0 0 0 10px rgba(224,67,92,0); }
  100% { box-shadow: 0 0 0 0 rgba(224,67,92,0); }
}

.status { color: var(--muted); font-size: 0.9rem; }
.timer { font-variant-numeric: tabular-nums; color: var(--muted); }

select, input[type="text"] {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
  flex: 1;
  min-width: 140px;
}

input[type="range"] { flex: 1; min-width: 100px; }
label { color: var(--muted); font-size: 0.85rem; }

.pads-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
@media (max-width: 480px) {
  .pads-grid { grid-template-columns: repeat(2, 1fr); }
}

.pad {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 8px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.08s ease;
  user-select: none;
}
.pad:active, .pad.playing { transform: scale(0.95); border-color: var(--accent); }
.pad .pad-key {
  display: block;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 6px;
}
.pad .pad-name {
  display: block;
  font-size: 0.85rem;
  min-height: 2.2em;
}
.pad .pad-assign {
  margin-top: 8px;
  width: 100%;
  font-size: 0.75rem;
  background: var(--card);
  color: var(--muted);
  border: 1px solid var(--border);
}

.library-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 340px;
  overflow-y: auto;
}
.lib-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
}
.lib-item .lib-info { flex: 1; min-width: 0; }
.lib-item .lib-name { font-weight: 600; font-size: 0.9rem; }
.lib-item .lib-tags { color: var(--muted); font-size: 0.75rem; }
.lib-item select { flex: none; width: 90px; min-width: 0; padding: 4px 6px; font-size: 0.8rem; }
.lib-item button { flex: none; padding: 4px 8px; font-size: 0.9rem; }

#resultPlayer { width: 100%; }

.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  width: 90%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.modal-box h3 { margin: 0 0 6px; }