body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: transparent;
    color: #f1f1f1;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.stereo-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.stereo-card {
    width: 440px;
    background: rgba(20, 20, 20, 0.95);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 0 30px rgba(0, 255, 170, 0.2);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stereo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stereo-header h2 {
    margin: 0;
    font-size: 20px;
    color: #00ffaa;
}

.clock {
    font-size: 14px;
    color: #ccc;
}

.track-section {
    text-align: center;
}

.track-title {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 5px;
}

.track-time {
    font-size: 14px;
    color: #888;
}

.volume-loop {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: #aaa;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.controls button {
    background-color: #222;
    border: 2px solid transparent;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.controls button:hover {
    border-color: #00ffaa;
    background-color: #2a2a2a;
}

.controls img {
    width: 24px;
    height: 24px;
    filter: brightness(0.9);
}

.input-area {
    display: flex;
    gap: 10px;
}

.input-area input {
    flex: 1;
    padding: 10px 15px;
    border-radius: 10px;
    border: none;
    font-size: 14px;
    background: #2c2c2c;
    color: white;
    outline: none;
}

.input-area button {
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    background: #00ffaa;
    color: black;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}

.input-area button:hover {
    background: #00cc88;
}

.utility-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
}

.utility-buttons button {
    flex: 1;
    margin: 0 5px;
    background-color: #1a1a1a;
    color: #00ffaa;
    border: 2px solid #00ffaa;
    border-radius: 10px;
    padding: 10px;
    font-size: 14px;
    font-weight: bold;
    transition: background 0.2s;
    cursor: pointer;
}

.utility-buttons button:hover {
    background-color: #00ffaa;
    color: #000;
}