:root {
    --bg-color: #1a1a1a;
    --primary-color: #00ffcc;
    --container-bg: #2a2a2a;
    --control-bg: #333;
    --border-color: #444;
    --text-color: #eee;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

.workstation-container {
    width: 95%;
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.header {
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    padding: 1rem;
    box-shadow: 0 0 15px rgba(0, 255, 204, 0.1);
}

h1 {
    text-align: center;
    color: var(--primary-color);
    margin: 0 0 1rem 0;
    text-shadow: 0 0 5px var(--primary-color);
}

.master-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

#play-button {
    background-color: var(--primary-color);
    color: var(--bg-color);
    border: none;
    padding: 12px 24px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s ease;
}

#play-button:hover {
    background-color: #fff;
    color: #000;
}

#play-button.playing {
    background-color: #ff3333;
    color: #fff;
}

.master-volume-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-grow: 1;
}

.main-container {
    display: grid;
    grid-template-columns: 200px 1fr; /* Mixer | Right Panel */
    gap: 1rem;
    height: 60vh;
    min-height: 500px;
}

/* --- Mixer --- */
#mixer {
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 1rem;
}

.fader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.fader-container label {
    font-size: 12px;
    margin-top: 1rem;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
}

input[type="range"].fader {
    -webkit-appearance: none;
    appearance: none;
    width: 80%;
    height: 15px;
    flex-grow: 1;
    background: transparent;
    cursor: pointer;
    transform: rotate(270deg);
}

input[type="range"].fader::-webkit-slider-runnable-track {
    background: var(--control-bg);
    height: 10px;
    border-radius: 5px;
}
input[type="range"].fader::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    height: 30px;
    width: 15px;
    background-color: var(--primary-color);
    border-radius: 3px;
    margin-top: -10px;
}

/* --- Right Panel (Tabs & Controls) --- */
#right-panel {
    display: flex;
    flex-direction: column;
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

#tabs {
    display: flex;
    background: var(--control-bg);
}

.tab-button {
    flex-grow: 1;
    background: var(--control-bg);
    color: var(--text-color);
    border: none;
    border-bottom: 3px solid transparent;
    padding: 1rem;
    font-family: inherit;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.tab-button:hover {
    background: #444;
}
.tab-button.active {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
}

#controls {
    padding: 1.5rem;
    overflow-y: auto;
    flex-grow: 1;
}

.control-panel {
    display: none;
    gap: 1rem;
    flex-direction: column;
}
.control-panel.active {
    display: flex;
}

.control-panel h3 {
    margin: 0 0 0.5rem 0;
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.control {
    display: grid;
    grid-template-columns: 120px 1fr;
    align-items: center;
    gap: 1rem;
}

/* --- Generic Controls --- */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    background: #555;
    outline: none;
    opacity: 0.8;
    transition: opacity .2s;
}
input[type="range"]:hover {
    opacity: 1;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
}

select {
    background-color: var(--control-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px;
    font-family: inherit;
    border-radius: 3px;
    width: 100%;
}