/* Instance Rack Visual */
.instance-rack {
    background: #080808;
    border: 1px solid var(--border-dim);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    box-shadow: inset 0 0 30px rgba(0,0,0,0.8);
    position: relative;
    overflow: hidden;
}

.instance-rack::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 19px,
        rgba(255,255,255,0.02) 20px
    );
    pointer-events: none;
}

.rack-unit {
    background: #111;
    border: 1px solid #222;
    padding: 15px 20px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.rack-unit.active {
    border-color: rgba(0, 255, 157, 0.3);
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.05);
}

.rack-unit.inactive {
    opacity: 0.5;
    border-style: dashed;
}

.unit-status {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #333;
    box-shadow: 0 0 0 2px #222;
}

.rack-unit.active .unit-status {
    background: var(--accent-primary);
    box-shadow: 0 0 10px var(--accent-primary);
    animation: blink 2s infinite;
}

.unit-info {
    flex-grow: 1;
    margin-left: 20px;
    font-family: var(--font-mono);
}

.unit-id {
    display: block;
    font-size: 0.7rem;
    color: #666;
    margin-bottom: 4px;
}

.unit-phone {
    display: block;
    font-size: 0.9rem;
    color: #fff;
}

.unit-led {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 4px 8px;
    background: rgba(0, 255, 157, 0.1);
    color: var(--accent-primary);
    border-radius: 2px;
    letter-spacing: 1px;
}

.unit-led.off {
    background: rgba(255, 255, 255, 0.05);
    color: #555;
}