/* --- Component Widgets --- */

/* Tempo & Info Display - 7 Segment */
.led-display {
    background: #000;
    padding: 4px 8px;
    border: 2px solid #555;
    border-radius: 2px;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 1);
    display: flex;
    gap: 4px;
    align-items: center;
    justify-content: center;
    height: 38px;
    box-sizing: border-box;
}

.digit {
    position: relative;
    width: 18px;
    height: 30px;
    margin: 0 1px;
}

.segment {
    position: absolute;
    background-color: #300;
    border-radius: 1px;
    transition: background-color 0.05s;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
}

.segment.on {
    background-color: #ff0000;
    box-shadow: 0 0 8px #ff0000, 0 0 3px #ffaaaa;
    z-index: 2;
}

/* Segment Positions */
.segment.a {
    top: 0;
    left: 3px;
    right: 3px;
    height: 3px;
}

.segment.b {
    top: 3px;
    right: 0;
    height: 11px;
    width: 3px;
}

.segment.c {
    bottom: 3px;
    right: 0;
    height: 11px;
    width: 3px;
}

.segment.d {
    bottom: 0;
    left: 3px;
    right: 3px;
    height: 3px;
}

.segment.e {
    bottom: 3px;
    left: 0;
    height: 11px;
    width: 3px;
}

.segment.f {
    top: 3px;
    left: 0;
    height: 11px;
    width: 3px;
}

.segment.g {
    top: 13.5px;
    left: 3px;
    right: 3px;
    height: 3px;
}

/* --- ROTARY KNOB STYLES --- */
.knob-group {
    display: flex;
    gap: 20px;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.1);
    padding: 15px;
    border-radius: 6px;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: margin-bottom 0.2s ease;
}

.machine.collapsed .knob-group {
    margin-bottom: 0;
    border-bottom: none;
}

.knob-group-section {
    display: flex;
    gap: 6px;
    align-items: center;
    padding: 0 6px;
    position: relative;
    flex-wrap: wrap;
    margin-top: 10px;
    justify-content: center;
    overflow: visible;
}

.knob-group-section::before {
    content: attr(data-label);
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    color: #555;
    font-weight: bold;
    letter-spacing: 1px;
}

.knob-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 50px;
    position: relative;
}

.knob-label {
    font-size: 9px;
    font-weight: bold;
    margin-bottom: 6px;
    text-align: center;
    pointer-events: none;
    text-transform: uppercase;
    color: #333;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.3);
}

.rotary-knob {
    width: 40px;
    height: 40px;
    background: var(--knob-body);
    border-radius: 50%;
    position: relative;
    cursor: ns-resize;
    box-shadow: 0 3px 5px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid #666;
    touch-action: none;
}

.rotary-knob.large {
    width: 60px;
    height: 60px;
}

/* Knob Input (Hidden Range) */
.knob-input {
    display: none;
}

/* Static gloss overlay */
.knob-wrapper::after {
    content: '';
    position: absolute;
    top: 33%;
    left: 55%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.4) 0%, rgba(255, 255, 255, 0) 50%);
    pointer-events: none;
    z-index: 10;
}

.knob-wrapper.large::after {
    width: 60px;
    height: 60px;
    top: 0;
}

/* Knob Indicator Line */
.rotary-knob::after {
    content: '';
    position: absolute;
    top: 4px;
    left: 50%;
    width: 3px;
    height: 14px;
    background: var(--knob-indicator);
    transform-origin: bottom center;
    transform: translateX(-50%);
    border-radius: 1px;
}

.rotary-knob.large::after {
    width: 4px;
    height: 20px;
    top: 5px;
}

/* Knob Tooltip */
.knob-tooltip {
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    background: #000;
    color: #f00;
    font-family: 'DSEG7Classic', monospace;
    font-size: 12px;
    padding: 2px 4px;
    border: 1px solid #555;
    border-radius: 2px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s;
    z-index: 100;
    white-space: nowrap;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.knob-tooltip.visible {
    opacity: 1;
}

/* Scalable Switches (Waveform, Mode) */
.waveform-switch,
.mode-switch {
    position: relative;
    background: #111;
    border-radius: 2px;
    display: flex;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.8);
    border: 1px solid #555;
}

.waveform-switch {
    width: 60px;
    height: 24px;
}

.mode-switch {
    width: 80px;
    height: 28px;
}

.waveform-switch input,
.mode-switch input {
    display: none;
}

.waveform-switch label,
.mode-switch label {
    width: 50%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
    cursor: pointer;
}

.switch-handle {
    position: absolute;
    top: 2px;
    left: 2px;
    width: calc(50% - 2px);
    height: calc(100% - 4px);
    background: linear-gradient(to bottom, #eee, #ccc);
    border-radius: 2px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease;
    z-index: 1;
}

.waveform-switch input[id*="wave-sq"]:checked~.switch-handle,
.mode-switch input[value="song"]:checked~.switch-handle {
    transform: translateX(100%);
}

.waveform-switch input:checked+label .icon,
.mode-switch input:checked+label .icon {
    opacity: 1;
    color: #000;
    filter: drop-shadow(0 0 1px rgba(255, 255, 255, 0.5));
}

.waveform-switch label .icon,
.mode-switch label .icon {
    opacity: 0.4;
    color: #666;
    transition: all 0.2s ease;
}

/* Mini Buttons for Steps */
.mini-btn {
    flex: 1;
    font-size: 8px;
    text-align: center;
    cursor: pointer;
    background: linear-gradient(to bottom, #444, #222);
    color: #888;
    border: 1px solid #111;
    padding: 3px 0;
    border-radius: 2px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    font-family: 'Arial', sans-serif;
    font-weight: bold;
    text-shadow: 0 -1px 0 rgba(0, 0, 0, 1);
    transition: all 0.1s;
}

.mini-btn:active {
    transform: translateY(1px);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.6);
    background: #222;
}

.mini-btn.active {
    color: #fff;
    text-shadow: 0 0 2px #f00;
    background: linear-gradient(to bottom, #d00, #900);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3), 0 0 5px #f00;
    border-color: #500;
}

/* Common Action Button */
.icon-action-btn {
    width: 40px;
    height: 40px;
    background: linear-gradient(to bottom, #555, #333);
    border: 1px solid #000;
    border-radius: 4px;
    appearance: none;
    -webkit-appearance: none;
    font: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transition: all 0.15s ease;
    color: #ddd;
}