/* Drop zone */
.mt-dropzone {
  border: 2px dashed rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 3.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
  margin-bottom: 1rem;
}
.mt-dropzone:hover, .mt-dropzone.drag-over {
  border-color: rgba(192,139,255,0.5);
  background: rgba(192,139,255,0.04);
}
.mt-file-input {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.mt-drop-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.mt-drop-text { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.4rem; }
.mt-drop-sub { font-size: 0.83rem; opacity: 0.5; }

/* Top bar */
.mt-topbar {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding: 0.85rem 1.25rem; margin-bottom: 0.75rem;
}
.mt-file-info { display: flex; align-items: center; gap: 0.75rem; min-width: 0; }
.mt-file-icon { font-size: 1.4rem; flex-shrink: 0; }
.mt-file-name { font-weight: 600; font-size: 0.92rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 180px; }
.mt-file-meta { font-size: 0.78rem; opacity: 0.55; margin-top: 0.1rem; }
.mt-playbar {
  flex: 1; display: flex; align-items: center; gap: 0.75rem; min-width: 0;
}
.mt-play-btn { flex-shrink: 0; font-size: 0.85rem; padding: 0.4rem 1rem; min-width: 80px; }
.mt-loop-btn {
  flex-shrink: 0; font-size: 0.8rem; padding: 0.4rem 0.7rem;
  border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.04);
}
.mt-loop-btn[aria-pressed="true"] {
  background: rgba(192,139,255,0.15); border-color: rgba(192,139,255,0.5); color: #c08bff;
}
.mt-vol-wrap { display: flex; align-items: center; gap: 6px; flex-shrink: 0; font-size: .85rem; opacity: .7; }
.mt-vol-wrap input[type=range] { width: 64px; accent-color: #c08bff; }
.mt-progress-wrap {
  flex: 1; height: 6px; border-radius: 3px;
  background: rgba(255,255,255,0.1); cursor: pointer; min-width: 60px;
  position: relative; overflow: hidden;
}
.mt-progress-fill {
  height: 100%; width: 0%; border-radius: 3px;
  background: linear-gradient(90deg, #c08bff, #60d5fa);
  transition: width 0.1s linear;
  pointer-events: none;
}
.mt-time { font-size: 0.78rem; opacity: 0.6; flex-shrink: 0; font-variant-numeric: tabular-nums; }
.mt-change-btn { font-size: 0.8rem; padding: 0.35rem 0.85rem; flex-shrink: 0; }

/* Tab bar */
.mt-tab-bar {
  display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 0.75rem;
}
.mt-tab {
  padding: 0.5rem 1.1rem;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: inherit; font-family: inherit; cursor: pointer;
  font-size: 0.85rem; font-weight: 500;
  transition: background 0.15s, border-color 0.15s;
}
.mt-tab:hover { background: rgba(255,255,255,0.08); }
.mt-tab.active {
  background: rgba(192,139,255,0.15);
  border-color: rgba(192,139,255,0.45);
  color: #c08bff;
}

/* Tab panels */
.mt-tab-panel { display: none; }
.mt-tab-panel.active { display: block; }

.mt-section-title { font-size: 0.95rem; font-weight: 700; margin: 0 0 1rem; }

/* Piano Roll */
.mt-roll-card { padding: 1rem; }
.mt-roll-controls {
  display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.75rem;
}
.mt-roll-ctrl-label { font-size: 0.75rem; opacity: 0.5; margin-right: 0.25rem; }
.mt-zoom-btn {
  font-size: 0.75rem; padding: 0.25rem 0.6rem;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
}
.mt-zoom-btn.active {
  background: rgba(192,139,255,0.15);
  border-color: rgba(192,139,255,0.5);
  color: #c08bff;
}
.mt-roll-scroll {
  overflow: auto;
  border-radius: 8px;
  background: #0a0d1a;
  max-height: 420px;
  cursor: grab;
  position: relative;
}
.mt-roll-playhead {
  position: absolute; top: 0; width: 2px;
  background: rgba(255,255,255,0.88);
  box-shadow: 0 0 6px rgba(255,255,255,0.5), 0 0 2px rgba(255,255,255,1);
  pointer-events: none; z-index: 5; display: none;
}
.mt-roll-scroll:active { cursor: grabbing; }
.mt-roll-canvas { display: block; }

/* Tracks */
.mt-track-list { display: flex; flex-direction: column; gap: 0.5rem; }
.mt-track-row {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
}
.mt-track-dot {
  width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0;
}
.mt-track-name { flex: 1; font-size: 0.88rem; font-weight: 500; }
.mt-track-meta { font-size: 0.75rem; opacity: 0.5; }
.mt-track-mute {
  font-size: 0.75rem; padding: 0.22rem 0.6rem;
  border: 1px solid rgba(255,255,255,0.12);
  background: transparent; color: inherit; font-family: inherit;
  border-radius: 6px; cursor: pointer;
  transition: background 0.15s;
}
.mt-track-mute:hover { background: rgba(255,255,255,0.08); }
.mt-track-mute.muted {
  background: rgba(255,100,100,0.12);
  border-color: rgba(255,100,100,0.3);
  color: #ff6b6b;
}
.mt-track-row.muted { opacity: 0.45; }

/* Transpose */
.mt-transpose-card { padding: 1.5rem; }
.mt-tp-row { display: flex; gap: 2rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.mt-tp-field { display: flex; flex-direction: column; gap: 0.5rem; }
.mt-tp-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.07em; opacity: 0.5; font-weight: 600; }
.mt-tp-stepper { display: flex; align-items: center; gap: 0.75rem; }
.mt-step-btn {
  width: 36px; height: 36px; padding: 0; font-size: 1.2rem; line-height: 1;
  border-radius: 8px;
}
.mt-step-val {
  font-size: 1.6rem; font-weight: 800; min-width: 50px; text-align: center;
  color: #c08bff;
}
.mt-tp-hint { font-size: 0.78rem; opacity: 0.5; }
.mt-tp-bpm-row { display: flex; align-items: center; gap: 0.75rem; }
.mt-bpm-input {
  width: 90px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px; padding: 0.5rem 0.7rem;
  color: inherit; font-family: inherit; font-size: 1.1rem; font-weight: 700;
  outline: none; text-align: center;
}
.mt-bpm-input:focus { border-color: rgba(192,139,255,0.4); }
.mt-bpm-orig { font-size: 0.78rem; opacity: 0.45; }
.mt-dl-btn { padding: 0.75rem 2rem; font-size: 0.95rem; font-weight: 700; }

/* Info */
.mt-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
}
.mt-info-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 10px; padding: 0.85rem 1rem;
}
.mt-info-key { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.07em; opacity: 0.45; margin-bottom: 0.35rem; }
.mt-info-val { font-size: 1.1rem; font-weight: 700; }