:root {
    --primary-color: #6200ea;
    --secondary-color: #03dac6;
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #ffffff;
    --error-color: #cf6679;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    border-bottom: 1px solid #333;
    padding-bottom: 10px;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 20px;
    font-weight: bold;
    padding: 5px 10px;
    border-radius: 4px;
}

nav a.active {
    background-color: var(--primary-color);
}

.submit-section,
.tracks-section,
.control-section {
    background-color: var(--surface-color);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

form {
    display: flex;
    gap: 10px;
}

input[type="url"] {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid #333;
    border-radius: 4px;
    background-color: #2c2c2c;
    color: white;
}

button {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #7c4dff;
}

.track-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.track-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #2c2c2c;
    padding: 10px;
    border-radius: 4px;
}

.track-info {
    display: flex;
    flex-direction: column;
}

.track-url {
    font-size: 0.9em;
    color: #aaa;
    word-break: break-all;
}

.vote-btn {
    background-color: var(--secondary-color);
    color: black;
}

.vote-btn:disabled {
    background-color: #555;
    cursor: not-allowed;
}

.controls {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.control-btn {
    font-size: 1.2em;
    padding: 15px 30px;
}

#message,
#controlMessage {
    margin-top: 10px;
    text-align: center;
}

.error {
    color: var(--error-color);
}

.success {
    color: var(--secondary-color);
}

/* Mobile responsive styles */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    nav {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    nav a {
        margin-left: 0;
    }

    form {
        flex-direction: column;
    }

    .controls {
        flex-direction: column;
        gap: 10px;
    }

    .control-btn {
        width: initial;
        font-size: 1.1em;
        padding: 12px 20px;
    }

    .track-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .vote-btn {
        width: 100%;
    }

    button {
        width: 100%;
        padding: 12px 20px;
    }

    input[type="url"] {
        width: 100%;
    }

    #now-playing-container {
        font-size: 0.9em;
    }
}