body {
    background-color: #000000;
    color: #00ff41;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding-top: 60px;
    overflow-x: hidden;
}

.menu {
    width: 100%;
    max-width: 500px;
    padding: 0;
    margin-top: 1rem;
    margin-bottom: 1rem;
    background-color: transparent;
    border: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.drumpad-editor {
    width: 100%;
}

.drumpad-editor summary {
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    color: #00ff41;
    font-size: 0.75rem;
    user-select: none;
    list-style: none;
    text-align: center;
}

.drumpad-editor-content {
    background-color: #0a0a0a;
    border: 1px solid #004d15;
    padding: 1rem;
    margin-top: 0.5rem;
}

.drumpad-editor summary::-webkit-details-marker {
    display: none;
}

.drumpad-editor summary::before {
    content: '+ ';
}

.drumpad-editor[open] summary::before {
    content: '- ';
}

.drumpad-editor summary:hover {
    color: #00cc33;
}

.title {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    font-weight: bold;
    text-align: center;
    z-index: 20;
}

#menu-toggle {
    background-color: #004d15;
    color: #00ff41;
    border: 1px solid #00ff41;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    cursor: pointer;
}

#menu-toggle:hover {
    background-color: #00ff41;
    color: #000000;
}

.mp3-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-top: 1rem;
    width: 100%;
}


.drumpads-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    width: 80%;
    max-width: 400px;
    
}


.drumpad {
    background-color: #0a0a0a;
    color: #00ff41;
    font-size: 1.5rem;
    text-align: center;
    border: 1px solid #004d15;

    width: 100%;
    cursor: pointer;
    user-select: none;
    outline: none;
    position: relative;
    overflow: hidden;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.drumpad::before {
    content: "";
    display: block;
    padding-top: 100%; /* 1:1 aspect ratio */
}

.drumpad span {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.drumpad:hover {
    background-color: #004d15;
    border-color: #00ff41;
}

.pad-name {
    font-size: 24px;
    font-weight: bold;
}

.file-name {
    font-size: 12px;
    font-weight: normal;
    padding-top: 50%;
}

/* Active state - green glow when pad is pressed */
.drumpad.active {
    background-color: #00ff41;
    color: #000000;
    box-shadow: 0 0 20px #00ff41, 0 0 40px #00ff41;
}

.drumpad.active .pad-name,
.drumpad.active .file-name {
    color: #000000;
}

/* Loading indicator animation */
.title.loading {
    animation: blink 0.5s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ===== BEAT SEQUENCER ===== */

.sequencer-container {
    width: 95%;
    max-width: 1100px;
    margin: 2rem auto;
    padding: 1rem;
    background-color: #0a0a0a;
    border: 1px solid #004d15;
}

/* Transport Controls */
.sequencer-transport {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid #004d15;
    flex-wrap: wrap;
}

.transport-btn {
    background-color: #0a0a0a;
    color: #00ff41;
    border: 1px solid #004d15;
    padding: 0.5rem 1rem;
    font-family: monospace;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.1s;
}

.transport-btn:hover {
    background-color: #004d15;
    border-color: #00ff41;
}

#seq-play.playing {
    background-color: #00ff41;
    color: #000000;
    box-shadow: 0 0 10px #00ff41;
}

/* BPM Control */
.bpm-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bpm-control label {
    color: #00ff41;
    font-family: monospace;
}

#bpm-input {
    width: 60px;
    background-color: #000000;
    color: #00ff41;
    border: 1px solid #004d15;
    padding: 0.25rem;
    font-family: monospace;
    text-align: center;
}

#bpm-slider {
    width: 100px;
    accent-color: #00ff41;
}

/* Pattern Length Buttons */
.pattern-length-control {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.pattern-length-control label {
    color: #00ff41;
    font-family: monospace;
    margin-right: 0.5rem;
}

.bar-btn {
    background-color: #0a0a0a;
    color: #00ff41;
    border: 1px solid #004d15;
    padding: 0.25rem 0.75rem;
    font-family: monospace;
    cursor: pointer;
}

.bar-btn.active {
    background-color: #004d15;
    border-color: #00ff41;
}

.bar-btn:hover {
    border-color: #00ff41;
}

/* Sound Palette */
.sound-palette {
    padding: 1rem;
    border-bottom: 1px solid #004d15;
}

.palette-title {
    color: #00ff41;
    font-family: monospace;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
}

.palette-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    max-height: 100px;
    overflow-y: auto;
}

.palette-sound {
    background-color: #0a0a0a;
    color: #00ff41;
    border: 1px solid #004d15;
    padding: 0.25rem 0.5rem;
    font-family: monospace;
    font-size: 0.7rem;
    cursor: grab;
    user-select: none;
    transition: all 0.1s;
}

.palette-sound:hover {
    background-color: #004d15;
    border-color: #00ff41;
}

.palette-sound.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

/* Sequencer Grid */
.sequencer-grid {
    padding: 1rem;
}

.seq-track {
    display: flex;
    align-items: center;
    margin-bottom: 0.25rem;
}

.track-header {
    display: flex;
    align-items: center;
    width: 100px;
    flex-shrink: 0;
    gap: 0.25rem;
}

.track-sound {
    flex: 1;
    background-color: #000000;
    border: 1px dashed #004d15;
    padding: 0.25rem;
    min-height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.track-sound.has-sound {
    border-style: solid;
    border-color: #00ff41;
}

.track-sound.drag-over {
    background-color: #004d15;
    border-color: #00ff41;
    box-shadow: 0 0 10px #00ff41 inset;
}

.sound-label {
    font-family: monospace;
    font-size: 0.65rem;
    color: #00ff41;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-mute {
    width: 24px;
    height: 24px;
    background-color: #0a0a0a;
    color: #00ff41;
    border: 1px solid #004d15;
    font-family: monospace;
    font-size: 0.7rem;
    cursor: pointer;
    flex-shrink: 0;
}

.track-mute.active {
    background-color: #ff4141;
    color: #000000;
    border-color: #ff4141;
}

/* Step Buttons */
.track-steps {
    display: flex;
    gap: 2px;
    flex: 1;
    overflow-x: auto;
}

.step-btn {
    width: 24px;
    height: 24px;
    background-color: #0a0a0a;
    border: 1px solid #004d15;
    cursor: pointer;
    transition: all 0.05s;
    flex-shrink: 0;
}

.step-btn.beat-marker {
    border-left: 2px solid #006620;
}

.step-btn:hover {
    background-color: #004d15;
}

.step-btn.active {
    background-color: #00ff41;
    border-color: #00ff41;
    box-shadow: 0 0 5px #00ff41;
}

.step-btn.playing {
    box-shadow: 0 0 10px #00ff41, 0 0 20px #00ff41;
    border-color: #ffffff;
}

.step-btn.active.playing {
    background-color: #ffffff;
    box-shadow: 0 0 15px #ffffff, 0 0 30px #00ff41;
}

/* Scrollbar styling */
.track-steps::-webkit-scrollbar,
.palette-grid::-webkit-scrollbar {
    height: 6px;
    width: 6px;
}

.track-steps::-webkit-scrollbar-track,
.palette-grid::-webkit-scrollbar-track {
    background: #0a0a0a;
}

.track-steps::-webkit-scrollbar-thumb,
.palette-grid::-webkit-scrollbar-thumb {
    background: #004d15;
}

.track-steps::-webkit-scrollbar-thumb:hover,
.palette-grid::-webkit-scrollbar-thumb:hover {
    background: #00ff41;
}