/* ═══════════════════════════════════════════════════════════════
   BOLL DAW – Music Sequencer Stylesheet
   Dark theme, professional DAW aesthetic
   All rules scoped under #daw-overlay to avoid conflicts
   ═══════════════════════════════════════════════════════════════ */

#daw-overlay {
    --bg-darkest: #0d0d0d;
    --bg-dark: #1a1a1e;
    --bg-mid: #242428;
    --bg-light: #2e2e34;
    --bg-lighter: #3a3a42;
    --accent: #00d4ff;
    --accent-dim: #007a99;
    --accent-green: #00ff88;
    --accent-red: #ff3355;
    --accent-yellow: #ffe033;
    --accent-orange: #ff8833;
    --accent-purple: #aa55ff;
    --text: #e0e0e0;
    --text-dim: #888;
    --text-dark: #555;
    --border: #333;
    --step-off: #2a2a30;
    --step-on: #00d4ff;
    --step-accent: #ff8833;
    --step-hover: #3a3a44;
    --step-playing: rgba(0, 212, 255, 0.25);
    --scrollbar-thumb: #444;
    --scrollbar-track: #1a1a1e;
}

/* ─── Overlay container ──────────────────────────────────────── */
#daw-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 5000;
    background: var(--bg-darkest);
    color: var(--text);
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
    font-size: 13px;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    display: none;
}
#daw-overlay.open {
    display: flex;
    flex-direction: column;
}

#daw-overlay #daw {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* ─── Scrollbar ──────────────────────────────────────────────── */
#daw-overlay ::-webkit-scrollbar { width: 8px; height: 8px; }
#daw-overlay ::-webkit-scrollbar-track { background: var(--scrollbar-track); }
#daw-overlay ::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 4px; }
#daw-overlay ::-webkit-scrollbar-thumb:hover { background: #555; }

/* ─── Top Bar / Transport ────────────────────────────────────── */
#daw-overlay #topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(180deg, #222228, #1a1a1e);
    border-bottom: 1px solid var(--border);
    padding: 6px 12px;
    gap: 12px;
    flex-shrink: 0;
    height: 48px;
}

#daw-overlay .topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

#daw-overlay .close-btn {
    color: var(--accent);
    background: transparent;
    font-weight: bold;
    font-size: 13px;
    padding: 4px 10px;
    border: 1px solid var(--accent-dim);
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.15s;
}
#daw-overlay .close-btn:hover { background: var(--accent-dim); color: #fff; }

#daw-overlay .daw-title {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--accent);
    text-shadow: 0 0 10px rgba(0,212,255,0.3);
}

#daw-overlay .transport {
    display: flex;
    align-items: center;
    gap: 8px;
}

#daw-overlay .transport button {
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 16px;
    width: 36px;
    height: 32px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.1s;
    display: flex;
    align-items: center;
    justify-content: center;
}
#daw-overlay .transport button:hover { background: var(--bg-lighter); border-color: var(--accent); }
#daw-overlay .transport button.active { background: var(--accent); color: #000; }

#daw-overlay .rec-btn { color: var(--accent-red) !important; }
#daw-overlay .rec-btn.active { background: var(--accent-red) !important; color: #fff !important; }

#daw-overlay .bpm-control, #daw-overlay .swing-control, #daw-overlay .pattern-control, #daw-overlay .steps-control {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: 8px;
}

#daw-overlay .bpm-control label, #daw-overlay .swing-control label, #daw-overlay .pattern-control label, #daw-overlay .steps-control label {
    color: var(--text-dim);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#daw-overlay #bpm {
    width: 52px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--accent);
    text-align: center;
    font-size: 14px;
    font-weight: bold;
    border-radius: 3px;
    padding: 2px;
}

#daw-overlay #swing {
    width: 60px;
    accent-color: var(--accent);
}

#daw-overlay #swing-val { color: var(--accent); font-size: 11px; min-width: 28px; }

#daw-overlay #pattern-select, #daw-overlay #steps-select, #daw-overlay #drum-kit {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 3px 6px;
    border-radius: 3px;
    font-size: 12px;
}

#daw-overlay .pattern-control button {
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--accent);
    width: 26px;
    height: 26px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}
#daw-overlay .pattern-control button:hover { background: var(--accent); color: #000; }

#daw-overlay .topbar-right {
    display: flex;
    gap: 6px;
}

#daw-overlay .topbar-right button {
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.15s;
}
#daw-overlay .topbar-right button:hover { background: var(--accent-dim); border-color: var(--accent); color: #fff; }

#daw-overlay .song-name-control {
    display: flex;
    align-items: center;
    gap: 4px;
}
#daw-overlay .song-name-control label {
    color: var(--text-dim);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#daw-overlay #song-name {
    width: 140px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--accent);
    font-size: 13px;
    border-radius: 3px;
    padding: 3px 6px;
}
#daw-overlay #song-name::placeholder { color: var(--text-dark); }

/* Song list overlay */
#daw-overlay .song-list-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 6000;
    display: flex;
    align-items: center;
    justify-content: center;
}
#daw-overlay .song-list-panel {
    background: var(--bg-mid);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    min-width: 320px;
    max-width: 500px;
    max-height: 70vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
#daw-overlay .song-list-panel h3 {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 15px;
}
#daw-overlay .song-list-items {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
#daw-overlay .song-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.1s;
}
#daw-overlay .song-list-item:hover { border-color: var(--accent); background: var(--bg-lighter); }
#daw-overlay .song-list-item .song-item-name { color: var(--text); font-weight: 600; }
#daw-overlay .song-list-item .song-item-date { color: var(--text-dark); font-size: 11px; }
#daw-overlay .song-list-item .song-item-delete {
    background: transparent;
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
    border-radius: 3px;
    padding: 2px 8px;
    font-size: 11px;
    cursor: pointer;
}
#daw-overlay .song-list-item .song-item-delete:hover { background: var(--accent-red); color: #fff; }
#daw-overlay .song-list-close {
    margin-top: 10px;
    text-align: right;
}
#daw-overlay .song-list-close button {
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 5px 16px;
    border-radius: 4px;
    cursor: pointer;
}

/* ─── Workspace ──────────────────────────────────────────────── */
#daw-overlay #workspace {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ─── Tabs ───────────────────────────────────────────────────── */
#daw-overlay #instrument-tabs {
    display: flex;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

#daw-overlay .tab {
    background: transparent;
    border: none;
    color: var(--text-dim);
    padding: 10px 20px;
    font-size: 13px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
    letter-spacing: 0.5px;
}
#daw-overlay .tab:hover { color: var(--text); background: rgba(255,255,255,0.03); }
#daw-overlay .tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: rgba(0,212,255,0.05);
}

/* ─── Panels ─────────────────────────────────────────────────── */
#daw-overlay .panel {
    display: none;
    flex: 1;
    overflow: auto;
    padding: 12px;
}
#daw-overlay .panel.active { display: flex; flex-direction: column; }

/* ─── Drum Machine ───────────────────────────────────────────── */
#daw-overlay .drum-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
}

#daw-overlay .drum-kit-select {
    display: flex;
    align-items: center;
    gap: 6px;
}

#daw-overlay .step-header {
    display: flex;
    padding-left: 120px;
    margin-bottom: 2px;
}

#daw-overlay .step-num {
    width: 32px;
    min-width: 32px;
    text-align: center;
    font-size: 10px;
    color: var(--text-dark);
}
#daw-overlay .step-num.beat { color: var(--text-dim); font-weight: bold; }

#daw-overlay .drum-grid, #daw-overlay .bass-grid {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

#daw-overlay .seq-row {
    display: flex;
    align-items: center;
    height: 32px;
}

#daw-overlay .row-label {
    width: 120px;
    min-width: 120px;
    padding: 0 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 6px;
}

#daw-overlay .row-label .color-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

#daw-overlay .step-cells {
    display: flex;
    gap: 2px;
}

#daw-overlay .step-cell {
    width: 32px;
    min-width: 32px;
    height: 28px;
    background: var(--step-off);
    border: 1px solid transparent;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.08s;
    position: relative;
}
#daw-overlay .step-cell:hover { background: var(--step-hover); }
#daw-overlay .step-cell.on {
    background: var(--step-on);
    box-shadow: 0 0 6px rgba(0,212,255,0.3);
}
#daw-overlay .step-cell.accent {
    background: var(--step-accent);
    box-shadow: 0 0 6px rgba(255,136,51,0.4);
}
#daw-overlay .step-cell.playing {
    box-shadow: 0 0 12px var(--accent), inset 0 0 8px rgba(255,255,255,0.15);
    border-color: var(--accent);
}

/* Beat grouping */
#daw-overlay .step-cell.beat-start { margin-left: 6px; }

/* ─── TB-303 ─────────────────────────────────────────────────── */
#daw-overlay .bass-controls { margin-bottom: 12px; }

#daw-overlay .knob-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    padding: 8px 12px;
    background: var(--bg-mid);
    border-radius: 6px;
    border: 1px solid var(--border);
}

#daw-overlay .knob-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

#daw-overlay .knob-group label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-dim);
    letter-spacing: 1px;
}

#daw-overlay .knob-group input[type="range"] {
    width: 80px;
    accent-color: var(--accent);
}

#daw-overlay .knob-group span {
    font-size: 11px;
    color: var(--accent);
    font-family: monospace;
}

#daw-overlay .knob-group select {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 3px 6px;
    border-radius: 3px;
    font-size: 12px;
}

/* 303 note row */
#daw-overlay .bass-note-cell {
    width: 32px;
    min-width: 32px;
    height: 28px;
    background: var(--step-off);
    border: 1px solid transparent;
    border-radius: 3px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: bold;
    color: var(--text-dim);
    transition: all 0.08s;
}
#daw-overlay .bass-note-cell.on {
    background: var(--accent-orange);
    color: #000;
}
#daw-overlay .bass-note-cell.accent-on {
    background: var(--accent-red);
    color: #fff;
}
#daw-overlay .bass-note-cell.slide {
    border-bottom: 2px solid var(--accent-green);
}
#daw-overlay .bass-note-cell.playing { border-color: var(--accent); box-shadow: 0 0 10px var(--accent); }

#daw-overlay .piano-keys-strip {
    display: flex;
    gap: 2px;
    margin-top: 4px;
    padding-left: 120px;
}

/* ─── Synth Piano Roll ───────────────────────────────────────── */
#daw-overlay .synth-controls { margin-bottom: 12px; }

#daw-overlay .piano-roll-container {
    display: flex;
    flex: 1;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-dark);
}

#daw-overlay .piano-roll-keys {
    width: 60px;
    min-width: 60px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    overflow-y: auto;
}

#daw-overlay .piano-key {
    height: 20px;
    min-height: 20px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 6px;
    font-size: 9px;
    color: var(--text-dim);
    border-bottom: 1px solid var(--bg-mid);
    cursor: pointer;
}
#daw-overlay .piano-key.white { background: #444; }
#daw-overlay .piano-key.black { background: #222; color: #666; }
#daw-overlay .piano-key:hover { background: var(--accent-dim); color: #fff; }

#daw-overlay .piano-roll-grid-wrapper {
    flex: 1;
    overflow: auto;
    display: flex;
    flex-direction: column;
}

#daw-overlay .piano-roll-grid {
    display: flex;
    flex-direction: column;
    min-width: fit-content;
}

#daw-overlay .piano-row {
    display: flex;
    height: 20px;
    min-height: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}
#daw-overlay .piano-row.black-row { background: rgba(0,0,0,0.15); }

#daw-overlay .piano-cell {
    width: 32px;
    min-width: 32px;
    height: 20px;
    border-right: 1px solid rgba(255,255,255,0.03);
    cursor: pointer;
    transition: background 0.06s;
}
#daw-overlay .piano-cell:hover { background: rgba(0,212,255,0.1); }
#daw-overlay .piano-cell.on {
    background: var(--accent);
    border-radius: 2px;
    box-shadow: inset 0 0 4px rgba(255,255,255,0.2);
}
#daw-overlay .piano-cell.playing { background: rgba(0,212,255,0.4); }
#daw-overlay .piano-cell.beat-start { border-left: 1px solid rgba(255,255,255,0.08); }

/* ─── Mixer ──────────────────────────────────────────────────── */
#daw-overlay .mixer-board {
    display: flex;
    gap: 4px;
    flex: 1;
    padding: 12px;
    overflow-x: auto;
    align-items: flex-end;
}

#daw-overlay .mixer-channel {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-mid);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 8px;
    min-width: 80px;
    gap: 6px;
}

#daw-overlay .mixer-channel .ch-name {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    font-weight: bold;
}

#daw-overlay .mixer-channel .fader-container {
    position: relative;
    height: 180px;
    width: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#daw-overlay .mixer-channel input[type="range"].fader {
    writing-mode: vertical-lr;
    direction: rtl;
    appearance: slider-vertical;
    height: 160px;
    width: 30px;
    accent-color: var(--accent);
}

#daw-overlay .mixer-channel .vol-display {
    font-size: 11px;
    color: var(--accent);
    font-family: monospace;
    min-width: 40px;
    text-align: center;
}

#daw-overlay .mixer-channel .pan-knob {
    width: 50px;
    accent-color: var(--accent-purple);
}

#daw-overlay .mixer-channel .ch-buttons {
    display: flex;
    gap: 4px;
}

#daw-overlay .mixer-channel .ch-buttons button {
    width: 28px;
    height: 22px;
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 10px;
    font-weight: bold;
    cursor: pointer;
    background: var(--bg-light);
    color: var(--text-dim);
}

#daw-overlay .mute-btn.active { background: var(--accent-red); color: #fff; border-color: var(--accent-red); }
#daw-overlay .solo-btn.active { background: var(--accent-yellow); color: #000; border-color: var(--accent-yellow); }

#daw-overlay .mixer-channel .fx-section {
    display: flex;
    flex-direction: column;
    gap: 3px;
    width: 100%;
}

#daw-overlay .fx-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-dim);
}

#daw-overlay .fx-row input[type="range"] {
    width: 50px;
    accent-color: var(--accent-green);
}

#daw-overlay .fx-divider {
    height: 1px;
    background: var(--border);
    margin: 2px 0;
    width: 100%;
}

/* Meter */
#daw-overlay .meter-container {
    width: 6px;
    height: 160px;
    background: var(--bg-dark);
    border-radius: 3px;
    position: relative;
    overflow: hidden;
    margin-left: 4px;
}

#daw-overlay .meter-fill {
    position: absolute;
    bottom: 0;
    width: 100%;
    background: linear-gradient(to top, var(--accent-green), var(--accent-yellow), var(--accent-red));
    border-radius: 3px;
    transition: height 0.05s;
}

/* ─── Song Arranger ──────────────────────────────────────────── */
#daw-overlay .song-info {
    margin-bottom: 8px;
    color: var(--text-dim);
    font-size: 12px;
}

#daw-overlay .song-header {
    display: flex;
    padding-left: 100px;
    margin-bottom: 2px;
}

#daw-overlay .song-bar-num {
    width: 48px;
    min-width: 48px;
    text-align: center;
    font-size: 10px;
    color: var(--text-dark);
}

#daw-overlay .song-grid {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

#daw-overlay .song-row {
    display: flex;
    align-items: center;
    height: 28px;
}

#daw-overlay .song-row-label {
    width: 100px;
    min-width: 100px;
    font-size: 11px;
    color: var(--text-dim);
    padding: 0 8px;
    font-weight: 600;
}

#daw-overlay .song-cells {
    display: flex;
    gap: 2px;
}

#daw-overlay .song-cell {
    width: 48px;
    min-width: 48px;
    height: 24px;
    background: var(--step-off);
    border-radius: 3px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--text-dark);
    transition: all 0.1s;
}
#daw-overlay .song-cell.active {
    background: var(--accent-dim);
    color: #fff;
}
#daw-overlay .song-cell.playing {
    background: var(--accent);
    color: #000;
    font-weight: bold;
}

#daw-overlay .song-controls {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    align-items: center;
}

#daw-overlay .song-controls button {
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}
#daw-overlay .song-controls button:hover { background: var(--accent-dim); }

#daw-overlay .song-controls label {
    color: var(--text-dim);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ─── Master meter in topbar ─────────────────────────────────── */
#daw-overlay .master-meter {
    display: flex;
    gap: 2px;
    align-items: flex-end;
    height: 28px;
}

/* ─── Toast ──────────────────────────────────────────────────── */
#daw-overlay .daw-toast {
    position: fixed;
    z-index: 7000;
}

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
    #daw-overlay #topbar { flex-wrap: wrap; height: auto; }
    #daw-overlay .transport { flex-wrap: wrap; }
    #daw-overlay .topbar-right { flex-wrap: wrap; }
    #daw-overlay .knob-row { gap: 8px; }
    #daw-overlay .step-cell, #daw-overlay .bass-note-cell, #daw-overlay .piano-cell { width: 26px; min-width: 26px; }
    #daw-overlay .step-header { padding-left: 90px; }
    #daw-overlay .row-label { width: 90px; min-width: 90px; }
}