* { box-sizing: border-box; margin: 0; padding: 0; }
  :root {
    --bg: #0f1117; --bg2: #1a1d27; --bg3: #22263a; --bg4: #2d3250;
    --accent: #7c6af7; --accent2: #a78bfa;
    --tonic: #3b82f6; --tonic-light: #93c5fd;
    --subdom: #10b981; --subdom-light: #6ee7b7;
    --dominant: #f59e0b; --dominant-light: #fcd34d;
    --modal: #ec4899; --modal-light: #f9a8d4;
    --secondary: #8b5cf6;
    --text: #e2e8f0; --text2: #94a3b8; --text3: #64748b;
    --border: #2d3250; --danger: #ef4444; --success: #22c55e;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
  }
  body { font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); height: 100vh; display: flex; flex-direction: column; overflow: hidden; }

  header { background: var(--bg2); border-bottom: 1px solid var(--border); padding: 8px 16px; display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .logo { font-size: 1.05rem; font-weight: 700; background: linear-gradient(135deg, var(--accent), var(--modal)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; white-space: nowrap; }
  .song-title-input { background: var(--bg3); border: 1px solid var(--border); color: var(--text); padding: 5px 10px; border-radius: 8px; font-size: 0.85rem; width: 170px; outline: none; transition: border-color 0.2s; }
  .song-title-input:focus { border-color: var(--accent); }
  .meta-item { display: flex; align-items: center; gap: 5px; background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; padding: 4px 8px; font-size: 0.78rem; }
  .meta-item label { color: var(--text2); font-size: 0.7rem; }
  .meta-item input, .meta-item select { background: transparent; border: none; color: var(--text); font-size: 0.8rem; outline: none; width: 46px; }
  .meta-item select { width: 66px; cursor: pointer; }
  .btn { padding: 6px 12px; border-radius: 8px; border: none; cursor: pointer; font-size: 0.78rem; font-weight: 600; transition: all 0.2s; display: inline-flex; align-items: center; gap: 5px; }
  .btn-primary { background: var(--accent); color: white; }
  .btn-primary:hover { background: var(--accent2); transform: translateY(-1px); }
  .btn-ghost { background: var(--bg3); color: var(--text2); border: 1px solid var(--border); }
  .btn-ghost:hover { background: var(--bg4); color: var(--text); }
  .btn-danger { background: rgba(239,68,68,0.15); color: var(--danger); border: 1px solid rgba(239,68,68,0.3); }
  .btn-danger:hover { background: rgba(239,68,68,0.25); }
  .btn-sm { padding: 4px 8px; font-size: 0.72rem; }
  .btn-projects { background: linear-gradient(135deg, rgba(124,106,247,0.2), rgba(236,72,153,0.2)); border: 1px solid rgba(124,106,247,0.4); color: var(--accent2); }
  .btn-projects:hover { background: linear-gradient(135deg, rgba(124,106,247,0.35), rgba(236,72,153,0.35)); }
  .header-right { display: flex; align-items: center; gap: 7px; margin-left: auto; }

  .save-indicator { font-size: 0.68rem; color: var(--text3); display: flex; align-items: center; gap: 4px; }
  .save-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); }
  .save-dot.unsaved { background: var(--dominant); }

  .legend { display: flex; align-items: center; gap: 10px; padding: 5px 16px; background: var(--bg2); border-bottom: 1px solid var(--border); flex-shrink: 0; flex-wrap: wrap; }
  .legend-item { display: flex; align-items: center; gap: 4px; font-size: 0.68rem; color: var(--text2); }
  .legend-dot { width: 9px; height: 9px; border-radius: 2px; }

  .main { display: flex; flex: 1; overflow: hidden; }

  .sections-panel { width: 205px; background: var(--bg2); border-right: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; flex-shrink: 0; }
  .panel-header { padding: 9px 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
  .panel-title { font-size: 0.73rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text2); }
  .sections-list { flex: 1; overflow-y: auto; padding: 6px; }
  .section-item { background: var(--bg3); border: 2px solid transparent; border-radius: 10px; padding: 8px 10px; margin-bottom: 5px; cursor: pointer; transition: all 0.2s; position: relative; user-select: none; }
  .section-item:hover { border-color: var(--border); background: var(--bg4); }
  .section-item.active { border-color: var(--accent); background: rgba(124,106,247,0.1); }
  .section-item.dragging { opacity: 0.4; }
  .section-item.drag-over { border-color: var(--accent2); border-style: dashed; }
  .section-name { font-size: 0.8rem; font-weight: 600; margin-bottom: 3px; padding-right: 20px; }
  .section-meta { font-size: 0.67rem; color: var(--text2); display: flex; align-items: center; gap: 5px; flex-wrap: wrap; }
  .section-key-badge { background: var(--bg4); padding: 1px 5px; border-radius: 4px; font-size: 0.65rem; color: var(--accent2); font-weight: 600; }
  .section-drag-handle { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); color: var(--text3); font-size: 0.82rem; cursor: grab; }
  .key-change-badge { display: inline-flex; align-items: center; gap: 3px; background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.3); color: var(--dominant-light); padding: 1px 5px; border-radius: 5px; font-size: 0.6rem; font-weight: 600; }
  .add-section-area { padding: 8px; border-top: 1px solid var(--border); }

  .editor-panel { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
  .editor-header { padding: 11px 16px; border-bottom: 1px solid var(--border); background: var(--bg2); display: flex; align-items: center; gap: 10px; flex-shrink: 0; flex-wrap: wrap; }
  .section-name-input { font-size: 0.98rem; font-weight: 700; background: transparent; border: none; color: var(--text); outline: none; border-bottom: 2px solid transparent; padding-bottom: 2px; transition: border-color 0.2s; width: 130px; }
  .section-name-input:focus { border-color: var(--accent); }
  .key-selector-group { display: flex; align-items: center; gap: 7px; margin-left: auto; flex-wrap: wrap; }
  .key-label { font-size: 0.73rem; color: var(--text2); font-weight: 600; }
  .key-select, .mode-select { background: var(--bg3); border: 1px solid var(--border); color: var(--text); padding: 5px 8px; border-radius: 8px; font-size: 0.8rem; outline: none; cursor: pointer; }
  .key-select:focus, .mode-select:focus { border-color: var(--accent); }
  .bars-input { background: var(--bg3); border: 1px solid var(--border); color: var(--text); padding: 5px 8px; border-radius: 8px; font-size: 0.8rem; outline: none; width: 52px; text-align: center; }
  .editor-body { flex: 1; overflow-y: auto; padding: 14px 16px; }
  .empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; color: var(--text3); text-align: center; gap: 10px; }
  .empty-state-icon { font-size: 2.5rem; }
  .empty-state h3 { font-size: 0.93rem; color: var(--text2); }
  .empty-state p { font-size: 0.78rem; max-width: 250px; line-height: 1.5; }

  .progression-label { font-size: 0.7rem; color: var(--text2); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
  .progression-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }
  .chord-slots { display: flex; flex-wrap: wrap; gap: 7px; min-height: 80px; padding: 10px; background: var(--bg2); border: 2px dashed var(--border); border-radius: 12px; margin-bottom: 10px; transition: border-color 0.2s, background 0.2s; align-items: flex-start; align-content: flex-start; }
  .chord-slots.drag-target { border-color: var(--accent); background: rgba(124,106,247,0.05); }
  .chord-slots.empty-hint::after { content: 'Drag chords here or click them in the palette →'; color: var(--text3); font-size: 0.76rem; display: flex; align-items: center; width: 100%; justify-content: center; padding: 18px 0; }

  .chord-card { position: relative; border-radius: 10px; padding: 7px 10px; cursor: grab; user-select: none; transition: all 0.2s; min-width: 66px; text-align: center; border: 2px solid transparent; }
  .chord-card:active { cursor: grabbing; transform: scale(0.95); }
  .chord-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
  .chord-card.dragging { opacity: 0.3; }
  .chord-card.tonic { background: rgba(59,130,246,0.15); border-color: rgba(59,130,246,0.4); }
  .chord-card.subdominant { background: rgba(16,185,129,0.15); border-color: rgba(16,185,129,0.4); }
  .chord-card.dominant { background: rgba(245,158,11,0.15); border-color: rgba(245,158,11,0.4); }
  .chord-card.modal { background: rgba(236,72,153,0.15); border-color: rgba(236,72,153,0.4); }
  .chord-card.secondary { background: rgba(139,92,246,0.15); border-color: rgba(139,92,246,0.4); }
  .chord-numeral { font-size: 0.6rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 1px; }
  .chord-card.tonic .chord-numeral { color: var(--tonic-light); }
  .chord-card.subdominant .chord-numeral { color: var(--subdom-light); }
  .chord-card.dominant .chord-numeral { color: var(--dominant-light); }
  .chord-card.modal .chord-numeral { color: var(--modal-light); }
  .chord-card.secondary .chord-numeral { color: #c4b5fd; }
  .chord-name { font-size: 0.93rem; font-weight: 700; color: var(--text); }
  .chord-quality { font-size: 0.58rem; color: var(--text2); margin-top: 1px; }
  .chord-function { font-size: 0.56rem; margin-top: 2px; opacity: 0.7; }
  .chord-card.tonic .chord-function { color: var(--tonic); }
  .chord-card.subdominant .chord-function { color: var(--subdom); }
  .chord-card.dominant .chord-function { color: var(--dominant); }
  .chord-card.modal .chord-function { color: var(--modal); }
  .chord-remove { position: absolute; top: -6px; right: -6px; width: 16px; height: 16px; background: var(--danger); border-radius: 50%; display: none; align-items: center; justify-content: center; font-size: 0.56rem; cursor: pointer; color: white; font-weight: 700; }
  .chord-card:hover .chord-remove { display: flex; }
  .chord-play-btn { position: absolute; bottom: -6px; left: 50%; transform: translateX(-50%); width: 18px; height: 18px; background: var(--accent); border-radius: 50%; display: none; align-items: center; justify-content: center; font-size: 0.52rem; cursor: pointer; color: white; border: none; }
  .chord-card:hover .chord-play-btn { display: flex; }
  .chord-bars-select { background: transparent; border: none; color: var(--text3); font-size: 0.56rem; cursor: pointer; outline: none; padding: 0; margin-top: 2px; }

  .presets-section { margin-top: 14px; }
  .presets-grid { display: flex; flex-wrap: wrap; gap: 7px; }
  .preset-btn { background: var(--bg2); border: 1px solid var(--border); color: var(--text2); padding: 6px 10px; border-radius: 8px; font-size: 0.72rem; cursor: pointer; transition: all 0.15s; display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
  .preset-btn:hover { background: var(--bg4); color: var(--text); border-color: var(--accent); }
  .preset-name { font-weight: 600; }
  .preset-chords { color: var(--text3); font-size: 0.63rem; }

  .palette-panel { width: 252px; background: var(--bg2); border-left: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; flex-shrink: 0; }
  .palette-tabs { display: flex; border-bottom: 1px solid var(--border); }
  .palette-tab { flex: 1; padding: 7px 4px; font-size: 0.66rem; font-weight: 600; text-align: center; cursor: pointer; color: var(--text3); border-bottom: 2px solid transparent; transition: all 0.2s; text-transform: uppercase; letter-spacing: 0.04em; }
  .palette-tab.active { color: var(--accent2); border-bottom-color: var(--accent); }
  .palette-tab:hover:not(.active) { color: var(--text2); }
  .palette-body { flex: 1; overflow-y: auto; padding: 8px; }
  .palette-section-title { font-size: 0.63rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text3); margin: 8px 0 5px; display: flex; align-items: center; gap: 5px; }
  .palette-section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }
  .palette-chords { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; margin-bottom: 6px; }
  .palette-chord { border-radius: 8px; padding: 6px 7px; cursor: pointer; user-select: none; transition: all 0.15s; text-align: center; border: 1px solid transparent; position: relative; }
  .palette-chord:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
  .palette-chord.tonic { background: rgba(59,130,246,0.12); border-color: rgba(59,130,246,0.3); }
  .palette-chord.subdominant { background: rgba(16,185,129,0.12); border-color: rgba(16,185,129,0.3); }
  .palette-chord.dominant { background: rgba(245,158,11,0.12); border-color: rgba(245,158,11,0.3); }
  .palette-chord.modal { background: rgba(236,72,153,0.12); border-color: rgba(236,72,153,0.3); }
  .palette-chord.secondary { background: rgba(139,92,246,0.12); border-color: rgba(139,92,246,0.3); }
  .palette-chord .chord-numeral { font-size: 0.56rem; font-weight: 700; }
  .palette-chord.tonic .chord-numeral { color: var(--tonic-light); }
  .palette-chord.subdominant .chord-numeral { color: var(--subdom-light); }
  .palette-chord.dominant .chord-numeral { color: var(--dominant-light); }
  .palette-chord.modal .chord-numeral { color: var(--modal-light); }
  .palette-chord.secondary .chord-numeral { color: #c4b5fd; }
  .palette-chord .chord-name { font-size: 0.8rem; font-weight: 700; }
  .palette-chord .chord-quality { font-size: 0.56rem; color: var(--text2); }
  .palette-play-btn { position: absolute; top: 2px; right: 2px; width: 14px; height: 14px; background: rgba(124,106,247,0.6); border-radius: 50%; display: none; align-items: center; justify-content: center; font-size: 0.48rem; cursor: pointer; color: white; border: none; }
  .palette-chord:hover .palette-play-btn { display: flex; }
  .theory-tip { background: rgba(124,106,247,0.08); border: 1px solid rgba(124,106,247,0.2); border-radius: 8px; padding: 7px 9px; font-size: 0.68rem; color: var(--text2); line-height: 1.5; margin-top: 8px; }
  .theory-tip strong { color: var(--accent2); }

  .custom-chord-builder { background: var(--bg3); border: 1px solid var(--border); border-radius: 10px; padding: 9px; margin-top: 6px; }
  .custom-chord-row { display: flex; gap: 5px; margin-bottom: 5px; align-items: center; }
  .custom-chord-row label { font-size: 0.68rem; color: var(--text2); width: 46px; }
  .custom-select { flex: 1; background: var(--bg4); border: 1px solid var(--border); color: var(--text); padding: 3px 5px; border-radius: 6px; font-size: 0.72rem; outline: none; cursor: pointer; }

  .overview-panel { height: 100px; background: var(--bg2); border-top: 1px solid var(--border); display: flex; flex-direction: column; flex-shrink: 0; }
  .overview-header { padding: 5px 14px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
  .overview-title { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text2); }
  .overview-body { flex: 1; display: flex; align-items: center; gap: 4px; padding: 6px 14px; overflow-x: auto; }
  .overview-section { display: flex; flex-direction: column; align-items: center; gap: 3px; flex-shrink: 0; cursor: pointer; transition: opacity 0.2s; }
  .overview-section:hover { opacity: 0.8; }
  .overview-section.active .overview-section-label { color: var(--accent2); }
  .overview-section-label { font-size: 0.6rem; font-weight: 700; color: var(--text2); text-transform: uppercase; }
  .overview-section-key { font-size: 0.56rem; color: var(--text3); }
  .overview-chords { display: flex; gap: 2px; }
  .overview-chord { width: 25px; height: 25px; border-radius: 5px; display: flex; align-items: center; justify-content: center; font-size: 0.5rem; font-weight: 700; color: white; }
  .overview-chord.tonic { background: var(--tonic); }
  .overview-chord.subdominant { background: var(--subdom); }
  .overview-chord.dominant { background: var(--dominant); }
  .overview-chord.modal { background: var(--modal); }
  .overview-chord.secondary { background: var(--secondary); }
  .overview-arrow { color: var(--text3); font-size: 0.72rem; flex-shrink: 0; margin-top: 13px; }

  /* PROJECTS MODAL */
  .modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.75); z-index: 200; display: none; align-items: center; justify-content: center; }
  .modal-overlay.show { display: flex; }
  .modal { background: var(--bg2); border: 1px solid var(--border); border-radius: 16px; padding: 0; width: 620px; max-width: 95vw; max-height: 85vh; overflow: hidden; display: flex; flex-direction: column; }
  .modal-header { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
  .modal-title { font-size: 0.98rem; font-weight: 700; }
  .modal-close { cursor: pointer; background: none; border: none; color: var(--text2); padding: 4px 8px; border-radius: 6px; font-size: 1rem; }
  .modal-close:hover { background: var(--bg3); color: var(--text); }
  .modal-body { flex: 1; overflow-y: auto; padding: 16px 18px; }
  .modal-section-title { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text3); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
  .modal-section-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

  .new-project-btn { width: 100%; padding: 13px; background: linear-gradient(135deg, rgba(124,106,247,0.15), rgba(236,72,153,0.15)); border: 2px dashed rgba(124,106,247,0.4); border-radius: 12px; color: var(--accent2); font-size: 0.88rem; font-weight: 700; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 16px; }
  .new-project-btn:hover { background: linear-gradient(135deg, rgba(124,106,247,0.25), rgba(236,72,153,0.25)); border-color: var(--accent); transform: translateY(-1px); }

  .saved-project-item { background: var(--bg3); border: 1px solid var(--border); border-radius: 10px; padding: 10px 13px; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; transition: all 0.2s; }
  .saved-project-item:hover { border-color: var(--accent); background: var(--bg4); }
  .saved-project-info { flex: 1; }
  .saved-project-name { font-size: 0.85rem; font-weight: 600; }
  .saved-project-meta { font-size: 0.68rem; color: var(--text3); margin-top: 2px; }
  .saved-project-actions { display: flex; gap: 5px; }
  .current-project-badge { display: inline-flex; align-items: center; gap: 3px; background: rgba(34,197,94,0.15); border: 1px solid rgba(34,197,94,0.3); color: #86efac; padding: 1px 6px; border-radius: 5px; font-size: 0.62rem; font-weight: 600; margin-left: 6px; }

  .templates-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .template-card { background: var(--bg3); border: 1px solid var(--border); border-radius: 10px; padding: 12px; cursor: pointer; transition: all 0.2s; }
  .template-card:hover { border-color: var(--accent); background: var(--bg4); transform: translateY(-1px); }
  .template-card-icon { font-size: 1.3rem; margin-bottom: 5px; }
  .template-card-name { font-size: 0.82rem; font-weight: 700; margin-bottom: 3px; }
  .template-card-desc { font-size: 0.68rem; color: var(--text2); line-height: 1.4; }
  .template-card-sections { font-size: 0.62rem; color: var(--text3); margin-top: 5px; }

  .export-modal { background: var(--bg2); border: 1px solid var(--border); border-radius: 16px; padding: 18px; width: 460px; max-width: 90vw; }
  .export-content { background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; padding: 12px; font-family: monospace; font-size: 0.76rem; line-height: 1.8; white-space: pre-wrap; color: var(--text); max-height: 260px; overflow-y: auto; }

  .toast { position: fixed; bottom: 115px; left: 50%; transform: translateX(-50%) translateY(20px); background: var(--bg4); border: 1px solid var(--border); color: var(--text); padding: 7px 14px; border-radius: 8px; font-size: 0.76rem; opacity: 0; transition: all 0.3s; z-index: 300; pointer-events: none; }
  .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

  @keyframes pulse-play { 0%,100% { box-shadow: 0 0 0 0 rgba(124,106,247,0.4); } 50% { box-shadow: 0 0 0 6px rgba(124,106,247,0); } }
  .playing { animation: pulse-play 0.6s ease-out; }

  .no-saves { text-align: center; padding: 18px; color: var(--text3); font-size: 0.78rem; }
  ::-webkit-scrollbar { width: 4px; height: 4px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 3px; }