/* ===== STUDIO CSS ===== */
.studio-body { overflow: hidden; height: 100vh; display: flex; flex-direction: column; cursor: none; }

/* BACKGROUND VISUALIZER */
#visualizer-canvas { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

/* ===== LOADING SCREEN ===== */
.loading-screen {
  position: fixed; inset: 0; z-index: 999;
  background: var(--bg-primary);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.5rem;
  transition: opacity 0.5s ease, visibility 0.5s;
}
.loading-screen.done { opacity: 0; visibility: hidden; pointer-events: none; }
.loading-logo { display: flex; align-items: center; gap: 0.6rem; }
.loading-icon { font-size: 2.5rem; animation: float 2s ease-in-out infinite; }
.loading-text { font-family: var(--font-display); font-size: 2rem; font-weight: 700; background: linear-gradient(135deg, #A855F7, #06B6D4); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.loading-bars { display: flex; align-items: flex-end; gap: 4px; height: 30px; }
.loading-bars span { width: 5px; background: var(--accent-purple); border-radius: 3px; animation: loading-bar 0.8s ease-in-out infinite alternate; }
.loading-bars span:nth-child(1) { animation-delay: 0s; }
.loading-bars span:nth-child(2) { animation-delay: 0.1s; }
.loading-bars span:nth-child(3) { animation-delay: 0.2s; }
.loading-bars span:nth-child(4) { animation-delay: 0.3s; }
.loading-bars span:nth-child(5) { animation-delay: 0.4s; }
@keyframes loading-bar { from { height: 8px; opacity: 0.4; } to { height: 30px; opacity: 1; } }
.loading-status { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); }

/* ===== MODAL ===== */
.modal-box {
  background: var(--bg-modal); border: 1px solid var(--border-bright);
  border-radius: var(--radius-xl); box-shadow: 0 40px 80px rgba(0,0,0,0.7), 0 0 0 1px rgba(255,255,255,0.03);
  animation: scaleIn 0.25s ease;
  max-height: 90vh; overflow-y: auto;
}
.ai-modal-box { width: min(580px, 95vw); }
.modal-header {
  padding: 2rem 2rem 1.5rem; text-align: center;
  background: linear-gradient(180deg, rgba(168,85,247,0.08), transparent);
  border-bottom: 1px solid var(--border);
}
.modal-logo { display: flex; align-items: center; justify-content: center; gap: 0.4rem; margin-bottom: 1rem; }
.logo-text-sm { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; background: linear-gradient(135deg, #A855F7, #06B6D4); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.modal-header h2 { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; margin-bottom: 0.4rem; }
.modal-header p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.5; }
.modal-body { padding: 1.5rem 2rem; display: flex; flex-direction: column; gap: 1rem; }
.modal-footer { padding: 1rem 2rem 1.5rem; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border); gap: 1rem; }

/* FORMS */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.75rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.06em; }
.label-optional { text-transform: none; letter-spacing: 0; font-weight: 400; color: var(--text-muted); }
.label-optional a { color: var(--accent-cyan); text-decoration: none; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.75rem; }
textarea, select, input[type="text"], input[type="number"], input[type="password"] {
  background: rgba(255,255,255,0.04); border: 1px solid var(--border-bright);
  color: var(--text-primary); border-radius: var(--radius-md); padding: 0.65rem 0.85rem;
  font-family: var(--font-body); font-size: 0.88rem; outline: none; width: 100%;
  transition: border-color 0.2s, background 0.2s;
  -webkit-appearance: none; appearance: none;
}
textarea:focus, select:focus, input:focus { border-color: var(--accent-purple); background: rgba(168,85,247,0.05); }
textarea { resize: none; height: 80px; }
select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238080A8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; padding-right: 2rem; }
.input-with-unit { display: flex; align-items: center; background: rgba(255,255,255,0.04); border: 1px solid var(--border-bright); border-radius: var(--radius-md); overflow: hidden; transition: border-color 0.2s; }
.input-with-unit:focus-within { border-color: var(--accent-purple); }
.input-with-unit input { border: none; background: transparent; border-radius: 0; padding-right: 0.25rem; }
.input-unit { padding: 0 0.75rem; color: var(--text-muted); font-family: var(--font-mono); font-size: 0.75rem; flex-shrink: 0; }
.btn-full { width: 100%; padding: 0.9rem; font-size: 1rem; }

/* AI states */
.ai-loading { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem; color: var(--text-secondary); font-size: 0.88rem; justify-content: center; }
.ai-loading-bars { display: flex; align-items: flex-end; gap: 3px; height: 18px; }
.ai-loading-bars span { width: 4px; background: var(--accent-purple); border-radius: 2px; animation: loading-bar 0.7s ease-in-out infinite alternate; }
.ai-loading-bars span:nth-child(1){animation-delay:0s}
.ai-loading-bars span:nth-child(2){animation-delay:0.1s}
.ai-loading-bars span:nth-child(3){animation-delay:0.2s}
.ai-loading-bars span:nth-child(4){animation-delay:0.3s}
.ai-loading-bars span:nth-child(5){animation-delay:0.4s}
.ai-result { background: rgba(168,85,247,0.06); border: 1px solid rgba(168,85,247,0.18); border-radius: var(--radius-md); padding: 1rem; animation: fadeUp 0.3s ease; }
.ai-result-quote { font-style: italic; color: var(--text-primary); line-height: 1.6; margin-bottom: 0.75rem; font-size: 0.9rem; }
.ai-result-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }

/* SHORTCUTS MODAL */
.shortcuts-box { width: min(700px, 95vw); }
.shortcuts-header { display: flex; align-items: center; justify-content: space-between; padding: 1.5rem 2rem; border-bottom: 1px solid var(--border); }
.shortcuts-header h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; }
.btn-close { background: none; border: none; color: var(--text-muted); font-size: 1.1rem; cursor: pointer; width: 28px; height: 28px; border-radius: 6px; transition: background 0.15s, color 0.15s; display: flex; align-items: center; justify-content: center; }
.btn-close:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); }
.shortcuts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.shortcut-group { padding: 1.25rem 2rem; border-bottom: 1px solid var(--border); }
.shortcut-group:nth-child(odd):not(:last-child) { border-right: 1px solid var(--border); }
.shortcut-group-title { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-purple); margin-bottom: 0.75rem; }
.shortcut-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.3rem 0; }
.shortcut-row span { font-size: 0.82rem; color: var(--text-secondary); }
kbd { background: rgba(255,255,255,0.08); border: 1px solid var(--border-bright); border-radius: 4px; padding: 0.15rem 0.5rem; font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-primary); white-space: nowrap; }

/* PIANO ROLL */
.piano-roll-box { width: min(900px, 95vw); height: min(600px, 80vh); display: flex; flex-direction: column; }
.piano-roll-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.piano-roll-header h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 700; }
.piano-roll-controls { display: flex; gap: 0.5rem; }
.piano-roll-content { display: flex; flex: 1; overflow: hidden; }
.piano-roll-keys { width: 48px; flex-shrink: 0; background: var(--bg-surface); border-right: 1px solid var(--border); overflow-y: auto; }
.pr-key { height: 24px; display: flex; align-items: center; justify-content: flex-end; padding-right: 4px; font-family: var(--font-mono); font-size: 0.55rem; color: var(--text-muted); border-bottom: 1px solid rgba(255,255,255,0.03); }
.pr-key.black { background: rgba(0,0,0,0.3); color: var(--text-muted); }
.pr-key.c-note { color: var(--accent-cyan); border-bottom-color: rgba(6,182,212,0.2); }
.piano-roll-grid-wrap { flex: 1; overflow: auto; }
.piano-roll-grid { display: grid; position: relative; }
.pr-cell { height: 24px; border-right: 1px solid rgba(255,255,255,0.03); border-bottom: 1px solid rgba(255,255,255,0.03); cursor: pointer; transition: background 0.1s; }
.pr-cell:nth-child(4n) { border-right-color: rgba(255,255,255,0.08); }
.pr-cell:hover { background: rgba(168,85,247,0.1); }
.pr-cell.on { background: var(--accent-purple); border-color: rgba(168,85,247,0.8); box-shadow: 0 0 6px rgba(168,85,247,0.4); }

/* ===== TRANSPORT BAR ===== */
.transport-bar {
  position: relative; z-index: 10;
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0 0.75rem; height: 52px;
  background: rgba(8,8,14,0.9); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.transport-left { display: flex; align-items: center; gap: 0.75rem; min-width: 180px; }
.studio-logo { display: flex; align-items: center; gap: 0.3rem; color: var(--accent-purple); font-weight: 700; flex-shrink: 0; transition: opacity 0.2s; }
.studio-logo:hover { opacity: 0.8; }
.studio-logo .logo-mark { font-size: 1.2rem; }
.project-name-wrap { border-left: 1px solid var(--border); padding-left: 0.75rem; }
.project-name-input { background: none; border: none; color: var(--text-primary); font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; width: 130px; outline: none; cursor: text; border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.project-name-input:focus { border-bottom-color: var(--accent-purple); }

.transport-center { flex: 1; display: flex; align-items: center; justify-content: center; gap: 0.5rem; flex-wrap: nowrap; overflow: hidden; }
.transport-group { display: flex; align-items: center; gap: 0.3rem; padding: 0 0.5rem; border-right: 1px solid var(--border); }
.transport-group:last-child { border-right: none; }

.transport-btn {
  width: 30px; height: 30px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05); border: 1px solid var(--border-bright);
  color: var(--text-secondary); font-size: 0.75rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition-fast);
}
.transport-btn:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); border-color: var(--accent-purple); }
.transport-btn.active { background: rgba(168,85,247,0.2); border-color: var(--accent-purple); color: var(--accent-purple); }
.play-btn.playing { background: rgba(168,85,247,0.25); border-color: var(--accent-purple); color: var(--accent-purple); box-shadow: 0 0 12px rgba(168,85,247,0.3); }
.record-btn { color: var(--accent-pink); }
.record-btn.recording { background: rgba(236,72,153,0.2); border-color: var(--accent-pink); animation: pulse 1s infinite; }

.bpm-group { gap: 0; }
.bpm-adj { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1rem; width: 22px; height: 30px; display: flex; align-items: center; justify-content: center; transition: color 0.15s; }
.bpm-adj:hover { color: var(--accent-purple); }
.bpm-display { display: flex; flex-direction: column; align-items: center; min-width: 44px; cursor: pointer; }
.bpm-number { font-family: var(--font-mono); font-size: 1rem; font-weight: 700; color: var(--accent-purple); line-height: 1; transition: transform 0.1s; }
.bpm-number.beat-pulse { animation: bpm-beat 0.15s ease-out; }
@keyframes bpm-beat { 0%{transform:scale(1.4);color:var(--accent-cyan)} 100%{transform:scale(1);color:var(--accent-purple)} }
.bpm-unit { font-family: var(--font-mono); font-size: 0.55rem; color: var(--text-muted); line-height: 1; }

.time-sig-display { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); }
.step-counter { font-family: var(--font-mono); font-size: 0.7rem; display: flex; align-items: baseline; }
.step-num-val { color: var(--accent-cyan); font-weight: 700; }
.step-denom { color: var(--text-muted); }

.swing-wrap { display: flex; align-items: center; gap: 0.4rem; }
.swing-label { font-family: var(--font-mono); font-size: 0.55rem; color: var(--text-muted); letter-spacing: 0.06em; }
.swing-slider { -webkit-appearance: none; width: 50px; height: 3px; background: var(--border-bright); border-radius: 2px; cursor: pointer; border: none; }
.swing-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 10px; height: 10px; border-radius: 50%; background: var(--accent-amber); cursor: pointer; }
.swing-val { font-family: var(--font-mono); font-size: 0.6rem; color: var(--accent-amber); min-width: 24px; }

.transport-right { display: flex; align-items: center; gap: 0.4rem; min-width: 280px; justify-content: flex-end; }
.viz-mode-group { display: flex; background: rgba(255,255,255,0.04); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.viz-mode-btn { padding: 0 0.55rem; height: 28px; background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.7rem; transition: all 0.15s; font-family: var(--font-mono); }
.viz-mode-btn.active { background: rgba(168,85,247,0.2); color: var(--accent-purple); }
.viz-mode-btn:hover:not(.active) { color: var(--text-primary); }
.transport-action-btn { height: 28px; padding: 0 0.6rem; background: rgba(255,255,255,0.04); border: 1px solid var(--border); color: var(--text-secondary); font-size: 0.72rem; font-weight: 600; border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition-fast); white-space: nowrap; }
.transport-action-btn:hover { background: rgba(255,255,255,0.08); border-color: var(--border-bright); color: var(--text-primary); }
.export-btn {
  height: 30px; padding: 0 0.9rem;
  background: rgba(6,182,212,0.12); border: 1px solid rgba(6,182,212,0.3);
  color: var(--accent-cyan); font-family: var(--font-display); font-weight: 700; font-size: 0.75rem;
  border-radius: var(--radius-sm); cursor: pointer; transition: all var(--transition-fast);
  position: relative; overflow: hidden; white-space: nowrap;
}
.export-btn:hover { background: rgba(6,182,212,0.2); box-shadow: 0 0 12px rgba(6,182,212,0.2); }
.export-btn-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: rgba(6,182,212,0.2); transition: width 0.1s; pointer-events: none; }

/* DIRECTION BAR */
.direction-bar {
  z-index: 9; padding: 0.45rem 1rem; flex-shrink: 0;
  background: rgba(168,85,247,0.07); border-bottom: 1px solid rgba(168,85,247,0.12);
  display: flex; align-items: center; gap: 0.6rem;
  animation: fadeDown 0.3s ease;
}
.direction-icon { font-size: 0.9rem; flex-shrink: 0; }
.direction-content { flex: 1; font-size: 0.82rem; color: var(--text-secondary); line-height: 1.4; font-style: italic; }
.direction-dismiss { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.8rem; width: 20px; height: 20px; border-radius: 4px; transition: background 0.15s; display: flex; align-items: center; justify-content: center; }
.direction-dismiss:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); }

/* ===== STUDIO BODY LAYOUT ===== */
.studio-body-wrap {
  flex: 1; display: flex; overflow: hidden; position: relative; z-index: 1; min-height: 0;
}
.studio-left {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 0;
  overflow-y: auto; border-right: 1px solid var(--border);
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}
.studio-right {
  width: 290px; flex-shrink: 0;
  display: flex; flex-direction: column; gap: 0;
  overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
}

/* ===== PANELS ===== */
.studio-panel {
  background: rgba(8,8,14,0.6); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.45rem 0.75rem; border-bottom: 1px solid var(--border);
  gap: 0.5rem; min-height: 36px;
}
.panel-title-row { display: flex; align-items: center; gap: 0.4rem; }
.panel-icon { font-size: 0.85rem; }
.panel-title { font-family: var(--font-display); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--text-secondary); }
.panel-actions { display: flex; align-items: center; gap: 0.4rem; flex-wrap: nowrap; }
.panel-hint { font-size: 0.65rem; color: var(--text-muted); white-space: nowrap; }

/* Small controls */
.select-sm { background: rgba(255,255,255,0.04); border: 1px solid var(--border); color: var(--text-secondary); padding: 0.2rem 1.5rem 0.2rem 0.5rem; border-radius: 5px; font-size: 0.7rem; cursor: pointer; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238080A8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.4rem center; }
.select-label { font-size: 0.65rem; color: var(--text-muted); }
.action-btn-sm { background: rgba(255,255,255,0.04); border: 1px solid var(--border); color: var(--text-muted); padding: 0.2rem 0.55rem; border-radius: 5px; font-size: 0.7rem; font-weight: 600; cursor: pointer; transition: all var(--transition-fast); white-space: nowrap; }
.action-btn-sm:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); border-color: var(--border-bright); }
.action-btn-sm.accent { background: rgba(168,85,247,0.1); border-color: rgba(168,85,247,0.25); color: var(--accent-purple); }
.action-btn-sm.accent:hover { background: rgba(168,85,247,0.2); }

/* ===== CHORD PADS ===== */
.chord-panel { }
.chord-pads-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem;
  padding: 0.65rem 0.75rem;
}
.chord-pad {
  height: 62px; border-radius: var(--radius-md);
  background: rgba(168,85,247,0.07); border: 1px solid rgba(168,85,247,0.15);
  cursor: pointer; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  transition: transform 0.08s, background 0.12s, border-color 0.12s, box-shadow 0.12s;
  position: relative; overflow: hidden; user-select: none;
}
.chord-pad::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(168,85,247,0.1), transparent); opacity: 0; transition: opacity 0.2s; }
.chord-pad:hover::before { opacity: 1; }
.chord-pad:hover { border-color: rgba(168,85,247,0.35); transform: translateY(-2px); }
.chord-pad:active, .chord-pad.active { background: rgba(168,85,247,0.28); border-color: var(--accent-purple); box-shadow: 0 0 20px rgba(168,85,247,0.4), inset 0 0 12px rgba(168,85,247,0.1); transform: translateY(1px); }
.chord-pad-name { font-family: var(--font-mono); font-size: 0.9rem; font-weight: 700; color: var(--accent-purple); line-height: 1; }
.chord-pad-num { font-size: 0.6rem; color: var(--text-muted); }
.chord-ripple { position: absolute; border-radius: 50%; background: rgba(168,85,247,0.35); animation: ripple 0.6s ease-out forwards; pointer-events: none; width: 20px; height: 20px; }

/* ===== SEQUENCER ===== */
.sequencer-panel { flex: 1; min-height: 0; }
.sequencer-scroll { overflow-y: auto; max-height: 220px; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.sequencer { padding: 0.4rem 0.75rem 0.5rem; display: flex; flex-direction: column; gap: 3px; }
.seq-row { display: flex; align-items: center; gap: 0.4rem; }
.seq-row-label {
  width: 46px; font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-muted);
  text-align: right; padding-right: 0.3rem; flex-shrink: 0; cursor: pointer;
  transition: color 0.15s;
}
.seq-row-label:hover { color: var(--accent-purple); }
.seq-row-controls { display: flex; align-items: center; gap: 0.25rem; flex-shrink: 0; }
.seq-mute {
  width: 20px; height: 20px; border-radius: 4px; border: 1px solid var(--border);
  background: none; font-size: 0.5rem; font-weight: 700; cursor: pointer;
  color: var(--text-muted); transition: all var(--transition-fast); display: flex; align-items: center; justify-content: center;
}
.seq-mute:hover { border-color: var(--border-bright); color: var(--text-secondary); }
.seq-mute.muted { background: rgba(239,68,68,0.15); border-color: rgba(239,68,68,0.4); color: var(--accent-red); }
.seq-vol { -webkit-appearance: none; width: 36px; height: 3px; background: var(--border-bright); border-radius: 2px; cursor: pointer; }
.seq-vol::-webkit-slider-thumb { -webkit-appearance: none; width: 8px; height: 8px; border-radius: 50%; background: var(--accent-purple); cursor: pointer; }
.seq-piano-btn { width: 20px; height: 20px; border-radius: 4px; border: 1px solid var(--border); background: none; font-size: 0.55rem; cursor: pointer; color: var(--text-muted); transition: all var(--transition-fast); display: flex; align-items: center; justify-content: center; }
.seq-piano-btn:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

.seq-cells { display: flex; gap: 1.5px; flex: 1; }
.seq-cell {
  flex: 1; height: 26px; border-radius: 3px;
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
  cursor: pointer; transition: background 0.08s, border-color 0.08s, box-shadow 0.08s;
  position: relative;
}
.seq-cell:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); }
.seq-cell.beat-marker { border-left-color: rgba(255,255,255,0.12); }
.seq-cell.on { border-color: transparent; }
.seq-cell.playhead { filter: brightness(1.6); box-shadow: 0 0 8px currentColor, 0 0 2px currentColor; }
.seq-cell.playhead::after { content: ''; position: absolute; inset: -1px; border-radius: 4px; border: 1px solid rgba(255,255,255,0.4); pointer-events: none; }

/* Row type colors */
.row-kick .seq-cell.on    { background: var(--accent-amber); }
.row-snare .seq-cell.on   { background: #F97316; }
.row-hihat .seq-cell.on   { background: #EAB308; }
.row-perc .seq-cell.on    { background: #84CC16; }
.row-bass .seq-cell.on    { background: #8B5CF6; }
.row-lead .seq-cell.on    { background: var(--accent-cyan); }
.row-pad .seq-cell.on     { background: #6366F1; }
.row-melody .seq-cell.on  { background: var(--accent-green); }

/* ===== KEYBOARD ===== */
.keyboard-panel { flex-shrink: 0; }
.key-scale-select { display: flex; align-items: center; gap: 0.4rem; }
.oct-btn { background: rgba(255,255,255,0.04); border: 1px solid var(--border); color: var(--text-muted); padding: 0.2rem 0.5rem; border-radius: 5px; font-size: 0.68rem; cursor: pointer; transition: all var(--transition-fast); }
.oct-btn:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.oct-val { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); min-width: 34px; text-align: center; }
.record-label { display: flex; align-items: center; gap: 0.3rem; font-size: 0.68rem; color: var(--text-muted); cursor: pointer; }
.record-label input { accent-color: var(--accent-pink); cursor: pointer; }
.keyboard-scroll { padding: 0.5rem 0.75rem 0.75rem; overflow-x: auto; }

.keyboard { display: flex; position: relative; height: 82px; min-width: 640px; gap: 0; }
.octave-group { display: flex; position: relative; flex: 1; }
.white-key {
  flex: 1; min-width: 28px;
  background: linear-gradient(180deg, rgba(235,235,255,0.92) 0%, rgba(245,245,255,0.96) 100%);
  border: 1px solid rgba(0,0,0,0.25); border-radius: 0 0 6px 6px;
  cursor: pointer; position: relative; z-index: 1;
  display: flex; align-items: flex-end; justify-content: center; padding-bottom: 4px;
  transition: background 0.05s, transform 0.05s, box-shadow 0.05s;
}
.white-key.in-scale { background: linear-gradient(180deg, rgba(6,182,212,0.18) 0%, rgba(6,182,212,0.1) 100%); border-color: rgba(6,182,212,0.5); }
.white-key:hover { background: linear-gradient(180deg, rgba(168,85,247,0.3) 0%, rgba(168,85,247,0.2) 100%); }
.white-key.pressed { transform: translateY(2px); background: rgba(168,85,247,0.5) !important; box-shadow: 0 0 16px rgba(168,85,247,0.6), inset 0 2px 4px rgba(0,0,0,0.2); }
.black-key {
  position: absolute; width: 60%; height: 56%;
  background: linear-gradient(180deg, #1a1a2e 0%, #0a0a15 100%);
  border: 1px solid rgba(255,255,255,0.08); border-radius: 0 0 5px 5px;
  cursor: pointer; z-index: 2;
  transition: background 0.05s, transform 0.05s, box-shadow 0.05s;
  top: 0;
}
.black-key.in-scale { background: linear-gradient(180deg, rgba(6,182,212,0.5) 0%, rgba(6,182,212,0.3) 100%); border-color: rgba(6,182,212,0.5); }
.black-key:hover { background: linear-gradient(180deg, rgba(168,85,247,0.6) 0%, rgba(168,85,247,0.4) 100%); }
.black-key.pressed { transform: translateY(2px); background: var(--accent-purple) !important; box-shadow: 0 0 14px rgba(168,85,247,0.7); }
.key-label { font-family: var(--font-mono); font-size: 0.5rem; color: var(--text-muted); pointer-events: none; }

/* ===== DRUM MACHINE ===== */
.drum-pads-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.4rem; padding: 0.6rem 0.75rem; }
.drum-pad {
  height: 50px; border-radius: var(--radius-md); cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  border: 1px solid var(--border); font-size: 0.65rem; font-weight: 700; color: var(--text-muted);
  transition: all 0.08s; position: relative; overflow: hidden; user-select: none;
}
.drum-pad::before { content: ''; position: absolute; inset: 0; opacity: 0.08; }
.drum-pad:nth-child(4n+1)::before { background: var(--accent-amber); }
.drum-pad:nth-child(4n+2)::before { background: #F97316; }
.drum-pad:nth-child(4n+3)::before { background: #EAB308; }
.drum-pad:nth-child(4n+4)::before { background: #84CC16; }
.drum-pad:hover { transform: scale(0.97); border-color: var(--border-bright); }
.drum-pad.hit { transform: scale(0.93) !important; border-color: transparent !important; }
.drum-pad:nth-child(4n+1).hit { background: rgba(245,158,11,0.8); box-shadow: 0 0 20px rgba(245,158,11,0.5); color: #000; }
.drum-pad:nth-child(4n+2).hit { background: rgba(249,115,22,0.8); box-shadow: 0 0 20px rgba(249,115,22,0.5); color: #000; }
.drum-pad:nth-child(4n+3).hit { background: rgba(234,179,8,0.8); box-shadow: 0 0 20px rgba(234,179,8,0.5); color: #000; }
.drum-pad:nth-child(4n+4).hit { background: rgba(132,204,22,0.8); box-shadow: 0 0 20px rgba(132,204,22,0.5); color: #000; }
.drum-pad-label { font-size: 0.55rem; color: var(--text-muted); font-family: var(--font-mono); }
.drum-pad.hit .drum-pad-label { color: rgba(0,0,0,0.6); }

/* ===== MIXER ===== */
.mixer-strips { display: flex; gap: 0; overflow-x: auto; padding: 0.5rem 0.5rem 0; min-height: 110px; scrollbar-width: thin; }
.ch-strip { display: flex; flex-direction: column; align-items: center; gap: 0.3rem; min-width: 42px; padding: 0.3rem; border-right: 1px solid var(--border); }
.ch-label { font-family: var(--font-mono); font-size: 0.5rem; color: var(--text-muted); text-align: center; max-width: 36px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ch-meter { width: 5px; height: 48px; background: rgba(255,255,255,0.04); border-radius: 3px; overflow: hidden; position: relative; }
.ch-meter-fill { position: absolute; bottom: 0; left: 0; right: 0; border-radius: 3px; background: linear-gradient(to top, #10B981 0%, #F59E0B 70%, #EF4444 100%); transition: height 0.06s; height: 0%; }
.ch-fader { -webkit-appearance: none; writing-mode: vertical-lr; direction: rtl; width: 6px; height: 55px; background: rgba(255,255,255,0.06); border-radius: 3px; cursor: pointer; }
.ch-fader::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 7px; background: var(--text-secondary); border-radius: 3px; cursor: pointer; box-shadow: 0 1px 4px rgba(0,0,0,0.4); }
.ch-btns { display: flex; flex-direction: column; gap: 2px; }
.ch-btn { width: 20px; height: 13px; border-radius: 3px; border: 1px solid var(--border); background: none; font-size: 0.45rem; font-weight: 800; cursor: pointer; color: var(--text-muted); transition: all var(--transition-fast); display: flex; align-items: center; justify-content: center; }
.ch-btn.m-active { background: rgba(239,68,68,0.25); border-color: var(--accent-red); color: var(--accent-red); }
.ch-btn.s-active { background: rgba(234,179,8,0.25); border-color: #EAB308; color: #EAB308; }
.mini-fader { -webkit-appearance: none; width: 60px; height: 3px; background: var(--border-bright); border-radius: 2px; cursor: pointer; border: none; }
.mini-fader::-webkit-slider-thumb { -webkit-appearance: none; width: 11px; height: 11px; border-radius: 50%; background: var(--accent-purple); cursor: pointer; }

/* ===== EFFECTS ===== */
.effects-rack { padding: 0.5rem 0.75rem; display: flex; flex-direction: column; gap: 0.45rem; }
.effect-row { display: flex; align-items: center; gap: 0.5rem; }
.effect-toggle-label { position: relative; flex-shrink: 0; cursor: pointer; }
.effect-check { opacity: 0; width: 0; height: 0; position: absolute; }
.effect-toggle-track {
  display: block; width: 28px; height: 16px; background: var(--border-bright); border-radius: 8px;
  transition: background 0.2s; position: relative;
}
.effect-toggle-track::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 12px; height: 12px; border-radius: 50%; background: var(--text-muted);
  transition: transform 0.2s, background 0.2s;
}
.effect-check:checked + .effect-toggle-track { background: rgba(6,182,212,0.4); }
.effect-check:checked + .effect-toggle-track::after { transform: translateX(12px); background: var(--accent-cyan); }
.effect-name { font-size: 0.75rem; color: var(--text-secondary); min-width: 68px; }
.effect-slider { flex: 1; -webkit-appearance: none; height: 3px; background: var(--border-bright); border-radius: 2px; cursor: pointer; border: none; }
.effect-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; border-radius: 50%; background: var(--accent-cyan); cursor: pointer; transition: box-shadow 0.15s; }
.effect-slider::-webkit-slider-thumb:hover { box-shadow: 0 0 8px var(--accent-cyan); }
.effect-val { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); min-width: 28px; text-align: right; }

/* ===== AI TOOLS ===== */
.ai-tools-body { padding: 0.5rem 0.75rem; display: flex; flex-direction: column; gap: 0.5rem; }
.ai-tool-row { display: flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0; border-bottom: 1px solid var(--border); }
.ai-tool-row:last-child { border-bottom: none; }
.ai-tool-info { flex: 1; }
.ai-tool-name { font-size: 0.78rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.2rem; }
.ai-tool-desc { font-size: 0.68rem; color: var(--text-muted); font-family: var(--font-mono); }
.btn-sm-icon { width: 30px; height: 30px; padding: 0; font-size: 1rem; border-radius: var(--radius-sm); flex-shrink: 0; }
.arp-controls { display: flex; gap: 0.4rem; margin-top: 0.3rem; }
.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.72rem; height: auto; }

/* ===== PROJECT ===== */
.project-actions { display: flex; gap: 0.4rem; padding: 0.5rem 0.75rem; flex-wrap: wrap; }
.btn-xs { padding: 0.25rem 0.6rem; font-size: 0.72rem; height: 26px; border-radius: 5px; }
.saved-projects { max-height: 120px; overflow-y: auto; }
.saved-project-item { display: flex; align-items: center; justify-content: space-between; padding: 0.4rem 0.75rem; border-top: 1px solid var(--border); cursor: pointer; transition: background 0.15s; }
.saved-project-item:hover { background: rgba(168,85,247,0.06); }
.saved-project-name { font-size: 0.78rem; color: var(--text-secondary); }
.saved-project-date { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-muted); }

/* ===== RECORDING BAR ===== */
.recording-bar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  background: rgba(236,72,153,0.1); backdrop-filter: blur(12px);
  border-top: 1px solid rgba(236,72,153,0.25);
  padding: 0.5rem 1rem; display: flex; align-items: center; gap: 1rem;
  animation: fadeUp 0.3s ease;
}
.rec-indicator { display: flex; align-items: center; gap: 0.4rem; font-family: var(--font-mono); font-size: 0.7rem; font-weight: 700; color: var(--accent-pink); letter-spacing: 0.1em; }
.rec-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-pink); animation: pulse 1s infinite; }
.rec-timer { font-family: var(--font-mono); font-size: 1rem; font-weight: 700; color: var(--text-primary); min-width: 48px; }
.rec-waveform { flex: 1; display: flex; align-items: center; gap: 2px; height: 24px; }
.rec-waveform span { flex: 1; max-width: 4px; border-radius: 2px; background: rgba(236,72,153,0.4); animation: loading-bar 0.5s infinite alternate; }
.rec-waveform span:nth-child(odd) { animation-delay: 0.1s; }

/* ===== WELCOME MODAL ===== */
.welcome-box { width: min(640px, 95vw); }
.welcome-header { padding: 2rem 2rem 1.5rem; text-align: center; background: linear-gradient(180deg, rgba(168,85,247,0.08), transparent); border-bottom: 1px solid var(--border); }
.welcome-header h2 { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; margin: 0.75rem 0 0.4rem; }
.welcome-header p { color: var(--text-secondary); font-size: 0.88rem; }
.welcome-paths { padding: 1.25rem; display: flex; flex-direction: column; gap: 0.65rem; }
.welcome-path {
  display: flex; align-items: center; gap: 1rem;
  background: rgba(255,255,255,0.03); border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg); padding: 1rem 1.25rem;
  cursor: pointer; text-align: left; transition: background 0.2s, border-color 0.2s, transform 0.15s;
  width: 100%;
}
.welcome-path:hover { background: rgba(168,85,247,0.08); border-color: rgba(168,85,247,0.4); transform: translateY(-1px); }
.path-icon { font-size: 1.8rem; flex-shrink: 0; width: 44px; text-align: center; }
.path-content { flex: 1; }
.path-title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0.25rem; }
.path-desc { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.5; }
.path-arrow { font-size: 1.2rem; color: var(--accent-purple); opacity: 0; transition: opacity 0.2s, transform 0.2s; }
.welcome-path:hover .path-arrow { opacity: 1; transform: translateX(3px); }

/* ===== PRESET PICK MODAL ===== */
.preset-pick-box { width: min(580px, 95vw); }
.preset-pick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.65rem; padding: 1.25rem; }
.preset-pick-card {
  background: rgba(255,255,255,0.03); border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg); padding: 1.25rem 1rem;
  cursor: pointer; text-align: center; transition: all 0.2s; display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
}
.preset-pick-card:hover { background: rgba(168,85,247,0.1); border-color: rgba(168,85,247,0.45); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(168,85,247,0.18); }
.pp-emoji { font-size: 2rem; }
.pp-name { font-family: var(--font-display); font-size: 0.88rem; font-weight: 700; color: var(--text-primary); }
.pp-meta { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); }

/* ===== MISC ADDITIONS ===== */
.arp-row { display: flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0; flex-wrap: wrap; }
.arp-row-label { font-size: 0.7rem; color: var(--text-muted); white-space: nowrap; }
.rec-hint { font-size: 0.72rem; color: var(--text-muted); flex: 1; text-align: center; }
.keyboard-hint { padding: 0.3rem 0.75rem; font-size: 0.68rem; color: var(--text-muted); font-family: var(--font-mono); border-top: 1px solid var(--border); text-align: center; }
.panel-hint { font-size: 0.7rem; color: var(--text-muted); }
.panel-help { display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; background: rgba(255,255,255,0.06); border: 1px solid var(--border-bright); border-radius: 50%; font-size: 0.62rem; color: var(--text-muted); cursor: help; flex-shrink: 0; transition: background 0.15s, color 0.15s; }
.panel-help:hover { background: rgba(168,85,247,0.15); color: var(--accent-purple); }
.time-sig-display { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); }
.step-counter { display: flex; align-items: baseline; gap: 1px; font-family: var(--font-mono); font-size: 0.75rem; }
.step-num-val { color: var(--accent-cyan); font-weight: 700; font-size: 0.88rem; }
.step-denom { color: var(--text-muted); }
.viz-mode-group { display: flex; gap: 2px; background: rgba(255,255,255,0.04); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.viz-mode-btn { background: none; border: none; color: var(--text-muted); padding: 0 0.5rem; height: 28px; font-size: 0.75rem; cursor: pointer; transition: background 0.15s, color 0.15s; }
.viz-mode-btn.active, .viz-mode-btn:hover { background: rgba(168,85,247,0.18); color: var(--accent-purple); }
.transport-action-btn { background: rgba(255,255,255,0.04); border: 1px solid var(--border-bright); border-radius: var(--radius-sm); color: var(--text-secondary); padding: 0 0.7rem; height: 28px; font-size: 0.72rem; cursor: pointer; transition: all 0.15s; white-space: nowrap; }
.transport-action-btn:hover { background: rgba(168,85,247,0.12); color: var(--text-primary); border-color: rgba(168,85,247,0.35); }
.mini-fader { width: 70px; height: 4px; accent-color: var(--accent-purple); cursor: pointer; }
.hidden { display: none !important; }