* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    background: #1a1a2e;
    font-family: 'Courier New', monospace;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    gap: 16px;
    color: #e0e0e0;
}

/* Shared Transport Bar */
.transport-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1100px;
    background: linear-gradient(145deg, #2a2a40, #1e1e32);
    border-radius: 12px;
    padding: 14px 24px;
    border: 2px solid #4a4a6a;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.transport-brand {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 14px;
    letter-spacing: 3px;
    color: #888;
}

.model-name {
    font-size: 39px;
    font-weight: bold;
    background: linear-gradient(135deg, #ff6b35, #ff4400);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.transport-controls {
    display: flex;
    gap: 16px;
    align-items: center;
}

.transport-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}

.control-group label {
    font-size: 12px;
    letter-spacing: 1px;
    color: #aaa;
}

.control-group input[type="range"] {
    width: 80px;
    height: 5px;
    -webkit-appearance: none;
    appearance: none;
    background: #333;
    border-radius: 3px;
    outline: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ff6b35;
    cursor: pointer;
    box-shadow: 0 0 6px rgba(255,107,53,0.5);
}

#tempo-display {
    font-size: 20px;
    color: #ff6b35;
    font-weight: bold;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    font-size: 17px;
    font-weight: bold;
    letter-spacing: 1px;
    transition: all 0.15s;
}

.btn-play { background: #4caf50; color: white; }
.btn-play:hover { background: #66bb6a; }
.btn-play.active { background: #81c784; box-shadow: 0 0 12px rgba(76,175,80,0.5); }
.btn-stop { background: #f44336; color: white; }
.btn-stop:hover { background: #ef5350; }
.btn-clear { background: #555; color: white; }
.btn-clear:hover { background: #777; }
.btn-share { background: #2196F3; color: white; }
.btn-share:hover { background: #42a5f5; }

.copy-feedback {
    font-size: 17px;
    color: #4CAF50;
    opacity: 0;
    transition: opacity 0.3s;
}

/* Sections */
.section {
    width: 100%;
    max-width: 1100px;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.synth-section {
    background: linear-gradient(145deg, #c0c0c0, #a8a8a8);
    border: 2px solid #888;
    color: #333;
}

.drum-section {
    background: linear-gradient(145deg, #2d2d44, #1f1f35);
    border: 2px solid #3a3a5c;
    color: #e0e0e0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid;
}

.synth-section .section-header { border-color: #ff4400; }
.drum-section .section-header { border-color: #ff6b35; }

.section-brand {
    display: flex;
    flex-direction: column;
}

.section-label {
    font-size: 14px;
    letter-spacing: 2px;
    opacity: 0.6;
}

.section-model {
    font-size: 36px;
    font-weight: bold;
}

.synth-section .section-model { color: #333; }
.drum-section .section-model { color: #ff6b35; text-shadow: 0 0 10px rgba(255,107,53,0.3); }

.section-volume {
    display: flex;
    align-items: center;
    gap: 6px;
}

.section-volume label {
    font-size: 14px;
    letter-spacing: 1px;
    opacity: 0.7;
}

.section-volume input[type="range"] {
    width: 60px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: #555;
    border-radius: 2px;
}

.synth-section .section-volume input { background: #999; }

.section-volume input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff6b35;
    cursor: pointer;
}

/* Synth Controls */
.synth-controls {
    display: flex;
    gap: 14px;
    margin-bottom: 14px;
    padding: 12px;
    background: rgba(0,0,0,0.08);
    border-radius: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.knob-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}

.knob-group label {
    font-size: 12px;
    letter-spacing: 1px;
    color: #444;
    text-transform: uppercase;
    font-weight: bold;
}

.knob-group input[type="range"] {
    width: 50px;
    height: 50px;
    -webkit-appearance: none;
    appearance: none;
    background: none;
    writing-mode: vertical-lr;
    direction: rtl;
}

.knob-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #333;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.knob-group input[type="range"]::-webkit-slider-runnable-track {
    width: 4px;
    background: #666;
    border-radius: 2px;
}

.knob-val { font-size: 14px; color: #555; font-weight: bold; }

/* Wave select */
.wave-select {
    display: flex;
    gap: 6px;
}

.wave-btn {
    padding: 4px 10px;
    font-size: 14px;
    background: #ddd;
    border: 1px solid #999;
    color: #444;
    cursor: pointer;
    border-radius: 3px;
    font-weight: bold;
}

.wave-btn.active { background: #ff4400; color: #fff; border-color: #cc3300; }

.pwm-control {
    display: flex;
    align-items: center;
    gap: 4px;
}

.pwm-control label {
    font-size: 12px;
    color: #444;
    font-weight: bold;
}

.pwm-control input[type="range"] {
    width: 50px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: #999;
    border-radius: 2px;
}

.pwm-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff4400;
    cursor: pointer;
}

.pwm-control .knob-val {
    font-size: 12px;
    color: #555;
}

/* Synth Sequencer */
.synth-sequencer .step-numbers,
.synth-sequencer .seq-row {
    display: grid;
    grid-template-columns: 50px repeat(16, 1fr);
    gap: 3px;
    margin-bottom: 3px;
    align-items: center;
}

.synth-sequencer .step-numbers span {
    text-align: center;
    font-size: 12px;
    color: #666;
}

.row-label {
    font-size: 14px;
    font-weight: bold;
    text-align: right;
    padding-right: 6px;
    opacity: 0.7;
}

.note-btn {
    aspect-ratio: 1;
    max-height: 28px;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid #999;
    background: #ddd;
    font-size: 17px;
    color: #666;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.1s;
    user-select: none;
}

.note-btn:hover { background: #ccc; }
.note-btn.active { background: #ff4400; border-color: #cc3300; color: #fff; }
.note-btn.current { box-shadow: 0 0 6px rgba(255,255,255,0.8); border-color: #fff; }

.toggle-btn {
    aspect-ratio: 1.6;
    max-height: 18px;
    border-radius: 3px;
    cursor: pointer;
    border: 1px solid #999;
    background: #ddd;
    font-size: 17px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.1s;
    user-select: none;
}

.toggle-btn.active { background: #ff8800; border-color: #cc6600; color: #fff; }
.toggle-btn.slide-active { background: #0088ff; border-color: #0066cc; color: #fff; }

.note-display {
    font-size: 12px;
    text-align: center;
    color: #333;
    font-weight: bold;
    cursor: pointer;
    padding: 2px;
    border-radius: 2px;
    background: rgba(255,255,255,0.5);
    user-select: none;
}

.note-display:hover { background: rgba(255,68,0,0.2); }

.oct-btn {
    font-size: 17px;
    text-align: center;
    cursor: pointer;
    color: #555;
    user-select: none;
}

.oct-btn:hover { color: #ff4400; }

/* Drum Section */
.track-wrapper {
    margin-bottom: 2px;
}

.track-left-spacer {
    width: 38px;
    flex-shrink: 0;
}

.track-params {
    display: none;
    align-items: center;
    gap: 6px;
    padding: 4px 6px 4px 38px;
    background: rgba(255,107,53,0.08);
    border-radius: 0 0 4px 4px;
    margin-bottom: 2px;
}

.track-wrapper.open > .track-params {
    display: flex;
}

.track-params span {
    font-size: 17px;
    letter-spacing: 1px;
    color: #888;
}

.track-params input[type="range"] {
    width: 50px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: #444;
    border-radius: 2px;
    margin-right: 6px;
}

.track-params input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ff6b35;
    cursor: pointer;
}

.separator {
    color: #555;
    font-size: 27px;
    margin: 0 4px;
}

/* Drum Sequencer */
.drum-sequencer .step-numbers {
    display: flex;
    align-items: center;
    margin-bottom: 4px;
}

.drum-sequencer .steps-row {
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    gap: 3px;
    flex: 1;
}

.drum-sequencer .steps-row.numbers span {
    text-align: center;
    font-size: 14px;
    color: #666;
}

.track {
    display: flex;
    align-items: center;
    margin-bottom: 3px;
}

.instrument-label {
    width: 38px;
    font-size: 14px;
    font-weight: bold;
    color: #aaa;
    text-align: right;
    padding-right: 6px;
    flex-shrink: 0;
    cursor: pointer;
    user-select: none;
    transition: color 0.15s;
}

.instrument-label:hover {
    color: #ff6b35;
}

.track-wrapper.open > .track > .instrument-label {
    color: #ff6b35;
}

.step {
    aspect-ratio: 1;
    max-height: 24px;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.1s;
    border: 1px solid #444;
    background: #222;
}

.step:hover { background: #333; border-color: #666; }
.step.active { background: #ff6b35; border-color: #ff8a5c; box-shadow: 0 0 4px rgba(255,107,53,0.4); }
.step.current { border-color: #fff; box-shadow: 0 0 6px rgba(255,255,255,0.3); }
.step.beat-1 { border-left: 2px solid #555; }

.step.active:nth-child(n+5):nth-child(-n+8),
.step.active:nth-child(n+13):nth-child(-n+16) { background: #ffa726; }

/* Pattern Select */
.pattern-select {
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    margin-top: 10px;
}

.pattern-select label {
    font-size: 15px;
    letter-spacing: 1px;
    color: #888;
}

.pattern-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid #555;
    background: #222;
    color: #aaa;
    font-weight: bold;
    font-size: 17px;
    cursor: pointer;
    transition: all 0.15s;
}

.pattern-btn:hover { border-color: #ff6b35; color: #ff6b35; }
.pattern-btn.active { border-color: #ff6b35; background: #ff6b35; color: white; box-shadow: 0 0 8px rgba(255,107,53,0.4); }

/* Sequencer container */
.sequencer {
    background: rgba(0,0,0,0.15);
    border-radius: 8px;
    padding: 12px;
}

.synth-section .sequencer { background: rgba(0,0,0,0.1); }

/* Responsive */
@media (max-width: 768px) {
    .transport-bar { flex-direction: column; gap: 10px; }
    .transport-controls { flex-wrap: wrap; justify-content: center; }
    .step { max-height: 20px; }
    .note-btn { max-height: 24px; }
}