/* ============================================
   Sequencer Grid Styles
   ============================================ */

/* Main Sequencer Container */
#main-sequencer {
    padding: 80px 20px 120px;
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
    max-width: 900px;
    margin: 0 auto;
}

/* Individual Sequencer Track */
.sequencer-track {
    background: 
        linear-gradient(180deg, rgba(30,30,60,0.95) 0%, rgba(20,20,50,0.98) 100%);
    border: 3px outset var(--chrome-mid);
    border-radius: 8px;
    padding: var(--gap-md);
    box-shadow: 
        4px 4px 0 rgba(0,0,0,0.4),
        inset 1px 1px 0 rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
}

.sequencer-track::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../imgs/bg_track1.png') repeat;
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.sequencer-track[data-track="bass"]::before {
    background-image: url('../imgs/bg_track2.png');
}

.sequencer-track[data-track="pads"]::before {
    background-image: url('../imgs/bg_track3..png');
}

.sequencer-track[data-track="fm"]::before {
    background-image: url('../imgs/bg_track4.png');
}

.sequencer-track > * {
    position: relative;
    z-index: 1;
}

/* Track muted state */
.sequencer-track.muted {
    opacity: 0.5;
}

.sequencer-track.dimmed {
    opacity: 0.4;
}

/* Track Header */
.track-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--gap-sm);
    flex-wrap: wrap;
    gap: var(--gap-sm);
}

.track-label {
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

.track-name {
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 2px;
}

/* Track-specific name colors */
.sequencer-track[data-track="lead"] .track-name {
    color: var(--cyber-pink);
    text-shadow: 0 0 10px var(--cyber-pink);
}

.sequencer-track[data-track="bass"] .track-name {
    color: var(--cyber-blue);
    text-shadow: 0 0 10px var(--cyber-blue);
}

.sequencer-track[data-track="pads"] .track-name {
    color: var(--cyber-purple);
    text-shadow: 0 0 10px var(--cyber-purple);
}

.sequencer-track[data-track="fm"] .track-name {
    color: var(--cyber-green);
    text-shadow: 0 0 10px var(--cyber-green);
}

/* VU Meter */
.vu-meter {
    border: 2px inset var(--chrome-dark);
    border-radius: 2px;
    background: #000;
}

/* Preset Selector */
.track-preset {
    display: flex;
    align-items: center;
    gap: var(--gap-xs);
}

.preset-select {
    padding: 4px 8px;
    font-family: var(--font-ui);
    font-size: 14px;
    background: linear-gradient(180deg, #2a2a4a 0%, #1a1a3a 100%);
    border: 2px inset var(--chrome-dark);
    border-radius: 4px;
    color: var(--chrome-light);
    cursor: pointer;
    min-width: 100px;
}

.preset-select:focus {
    outline: 2px solid var(--cyber-cyan);
    outline-offset: 1px;
}

.btn-random {
    width: 32px;
    height: 32px;
    font-size: 16px;
    border: 2px outset var(--chrome-mid);
    border-radius: 4px;
    background: linear-gradient(180deg, #5a4a6a 0%, #3a2a4a 100%);
    color: var(--chrome-light);
    cursor: pointer;
}

.btn-random:active {
    border-style: inset;
}

/* ============================================
   Sequencer Grid (2 rows x 8 columns)
   ============================================ */
.sequencer-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 4px;
    background: linear-gradient(180deg, #0a0a1a 0%, #151525 100%);
    border: 3px inset var(--chrome-dark);
    border-radius: 4px;
    padding: var(--gap-sm);
    margin-bottom: var(--gap-sm);
}

/* Individual Step */
.step {
    aspect-ratio: 1;
    min-height: 36px;
    border: 2px outset var(--chrome-dark);
    border-radius: 4px;
    background: linear-gradient(180deg, #252535 0%, #1a1a2a 100%);
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.1s ease;
}

.step:hover {
    background: linear-gradient(180deg, #353545 0%, #2a2a3a 100%);
    border-color: var(--chrome-mid);
}

.step:active {
    border-style: inset;
}

/* Active Step */
.step.active {
    background: linear-gradient(180deg, #3a5a6a 0%, #2a4a5a 100%);
    border-color: var(--cyber-cyan);
    box-shadow: 
        inset 0 0 10px rgba(0,255,255,0.3),
        0 0 5px rgba(0,255,255,0.3);
}

/* Track-specific active step colors */
.sequencer-track[data-track="lead"] .step.active {
    background: linear-gradient(180deg, #5a3a5a 0%, #4a2a4a 100%);
    border-color: var(--cyber-pink);
    box-shadow: 
        inset 0 0 10px rgba(255,0,200,0.3),
        0 0 5px rgba(255,0,200,0.3);
}

.sequencer-track[data-track="bass"] .step.active {
    background: linear-gradient(180deg, #3a4a6a 0%, #2a3a5a 100%);
    border-color: var(--cyber-blue);
    box-shadow: 
        inset 0 0 10px rgba(0,200,255,0.3),
        0 0 5px rgba(0,200,255,0.3);
}

.sequencer-track[data-track="pads"] .step.active {
    background: linear-gradient(180deg, #4a3a6a 0%, #3a2a5a 100%);
    border-color: var(--cyber-purple);
    box-shadow: 
        inset 0 0 10px rgba(150,50,255,0.3),
        0 0 5px rgba(150,50,255,0.3);
}

.sequencer-track[data-track="fm"] .step.active {
    background: linear-gradient(180deg, #3a5a4a 0%, #2a4a3a 100%);
    border-color: var(--cyber-green);
    box-shadow: 
        inset 0 0 10px rgba(0,255,100,0.3),
        0 0 5px rgba(0,255,100,0.3);
}

/* Playhead Step */
.step.playhead {
    box-shadow: 
        inset 0 0 15px rgba(255,255,255,0.2),
        0 0 8px rgba(255,255,255,0.3);
}

.step.active.playhead {
    box-shadow: 
        inset 0 0 20px rgba(255,255,255,0.4),
        0 0 15px rgba(255,255,255,0.5);
}

/* Triggered Step Flash */
.step.triggered {
    animation: stepFlash 0.1s ease-out;
}

@keyframes stepFlash {
    0% { 
        filter: brightness(2);
        box-shadow: 0 0 20px rgba(255,255,255,0.8);
    }
    100% { 
        filter: brightness(1);
    }
}

/* Note Label */
.note-label {
    font-family: var(--font-display);
    font-size: 8px;
    color: var(--chrome-light);
    text-shadow: 0 0 3px currentColor;
    pointer-events: none;
}

/* ============================================
   Track Effects Sliders
   ============================================ */
.track-effects {
    display: flex;
    gap: var(--gap-sm);
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--gap-sm);
    padding: var(--gap-xs) 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.effect-slider {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    min-width: 50px;
}

.effect-slider label {
    font-family: var(--font-display);
    font-size: 7px;
    color: var(--cyber-yellow);
    text-shadow: 0 0 3px var(--cyber-yellow);
}

.effect-slider input[type="range"] {
    width: 50px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: linear-gradient(90deg, #1a1a3a, #3a3a5a);
    border: 1px inset var(--chrome-dark);
    border-radius: 3px;
    cursor: pointer;
}

.effect-slider input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 10px;
    height: 14px;
    background: linear-gradient(180deg, var(--chrome-light), var(--chrome-dark));
    border: 1px outset var(--chrome-mid);
    border-radius: 2px;
    cursor: grab;
}

/* ============================================
   Track Control Buttons
   ============================================ */
.track-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: center;
}

.track-controls button {
    min-width: 36px;
    height: 28px;
    padding: 0 6px;
    font-family: var(--font-ui);
    font-size: 12px;
    border: 2px outset var(--chrome-mid);
    border-radius: 3px;
    background: linear-gradient(180deg, #4a4a5a 0%, #2a2a3a 100%);
    color: var(--chrome-light);
    cursor: pointer;
}

.track-controls button:hover {
    background: linear-gradient(180deg, #5a5a6a 0%, #3a3a4a 100%);
}

.track-controls button:active {
    border-style: inset;
}

.track-controls button.active {
    border-style: inset;
    background: linear-gradient(180deg, #2a5a4a 0%, #1a4a3a 100%);
    color: var(--cyber-green);
    text-shadow: 0 0 5px var(--cyber-green);
}

/* Mute button active state */
.track-controls .btn-mute.active {
    background: linear-gradient(180deg, #6a3a3a 0%, #4a2a2a 100%);
    color: var(--cyber-red);
    text-shadow: 0 0 5px var(--cyber-red);
}

/* Solo button active state */
.track-controls .btn-solo.active {
    background: linear-gradient(180deg, #6a6a3a 0%, #4a4a2a 100%);
    color: var(--cyber-yellow);
    text-shadow: 0 0 5px var(--cyber-yellow);
}

/* Ping pong active */
.track-controls .btn-pingpong.active {
    background: linear-gradient(180deg, #4a3a6a 0%, #3a2a5a 100%);
    color: var(--cyber-purple);
    text-shadow: 0 0 5px var(--cyber-purple);
}

/* Copy confirmation */
.track-controls .btn-copy.copied {
    background: linear-gradient(180deg, #3a6a3a 0%, #2a5a2a 100%);
    color: var(--cyber-green);
}