/* ── Magnetic Tape Emulator — Stylesheet ───────────────────────── */
:root {
  --bg: #020617;
  --panel: #0f172a;
  --line: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --accent-dk: #0e7490;
  --record: #ef4444;
  --danger: #dc2626;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at 20% 10%, #0b2342 0, #020617 45%);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  padding: 20px;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
}

/* ── Top Bar ── */
.bar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.bar .title {
  margin-left: auto;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  font-family: monospace;
}

.btn {
  background: #06b6d4;
  color: #03202a;
  border: 0;
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.9rem;
}

.btn.alt {
  background: #1e293b;
  color: var(--text);
  border: 1px solid var(--line);
}

/* ── Canvas Card ── */
.card {
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
}

canvas {
  display: block;
  width: 100%;
  max-width: 1024px;
  height: auto;
  border-radius: 8px;
  background: #000;
  cursor: crosshair;
}

/* ── Transport Controls ── */
.controls {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.transport {
  display: flex;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 12px;
}

.transport-btn {
  width: 52px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #1e293b;
  color: var(--text);
  font-size: 1.3rem;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.transport-btn:hover {
  background: #334155;
  border-color: var(--accent);
}

.transport-btn:active {
  transform: scale(0.95);
}

.transport-btn.primary {
  background: var(--accent-dk);
  border-color: var(--accent);
  color: #fff;
}

.transport-btn.primary:hover {
  background: var(--accent);
  color: #03202a;
}

.transport-btn.rec {
  color: var(--record);
}

.transport-btn.rec:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--record);
}

.transport-btn.eject {
  font-size: 1.5rem;
}

.transport-btn.active {
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.4);
  border-color: var(--accent);
  background: rgba(34, 211, 238, 0.15);
}

.transport-btn.rec.active {
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.4);
  border-color: var(--record);
  background: rgba(239, 68, 68, 0.15);
  animation: rec-pulse 1s infinite;
}

@keyframes rec-pulse {
  0%, 100% { box-shadow: 0 0 12px rgba(239, 68, 68, 0.4); }
  50% { box-shadow: 0 0 24px rgba(239, 68, 68, 0.7); }
}

.transport-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ── File Controls ── */
.file-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.file-btn {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #1e293b;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.file-btn:hover {
  background: #334155;
  border-color: var(--accent);
}

.file-btn.danger {
  color: var(--record);
  border-color: rgba(239, 68, 68, 0.3);
}

.file-btn.danger:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--record);
}

/* ── Status Bar ── */
.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 8px;
}

.status-bar .shortcuts {
  font-size: 0.75rem;
  opacity: 0.6;
  font-family: monospace;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  body { padding: 10px; }
  .controls { flex-direction: column; }
  .transport-btn { width: 44px; height: 38px; font-size: 1.1rem; }
  .bar .title { margin-left: 0; }
}