:root {
    --ui-blue: #007bff;
    --light-bg: rgba(245, 245, 245, 0.9);
    --light-text: #212529;
    --light-border: #dee2e6;
    --light-slider-track: #e9ecef;
    --dark-bg: rgba(33, 37, 41, 0.85);
    --dark-text: #f8f9fa;
    --dark-border: #495057;
    --dark-slider-track: #495057;
}

body {
    margin: 0;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #000;
}

canvas {
    display: block;
}

#controls-container {
    position: absolute;
    top: 20px;
    left: 70px;
    padding: 25px 30px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: background-color 0.3s, color 0.3s, border 0.3s, box-shadow 0.3s;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    width: 280px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    border: 1px solid rgba(255, 255, 255, 0.18);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

@media (max-width: 600px) {
    #controls-container {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        width: 280px;
        max-height: 100vh;
        border-radius: 0 16px 16px 0;
        padding: 10px 15px;
        overflow-y: auto;
        box-shadow: 8px 0 32px 0 rgba(31, 38, 135, 0.37);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        font-size: 14px;
        z-index: 1001;
        -webkit-overflow-scrolling: touch;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
    }

    #controls-container.hidden {
        transform: translateX(-100%);
        opacity: 0;
        pointer-events: none;
    }

    #hamburger-button {
        position: fixed;
        top: 10px;
        left: 290px;
        width: 32px;
        height: 32px;
        font-size: 22px;
        z-index: 1002;
        border-radius: 10px;
        background-color: rgba(0, 123, 255, 0.85);
        color: white;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 5px 15px rgba(0, 123, 255, 0.7);
        transition: background-color 0.3s, box-shadow 0.3s;
    }

    #hamburger-button:hover {
        background-color: rgba(0, 123, 255, 1);
        box-shadow: 0 7px 20px rgba(0, 123, 255, 0.9);
    }

    #controls-container h2 {
        font-size: 16px;
        margin-bottom: 6px;
        text-align: center;
    }

    #controls-container h3 {
        font-size: 12px;
        margin-bottom: 8px;
        text-align: center;
    }

    .slider-container {
        margin-bottom: 10px;
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: stretch;
    }

    label {
        font-size: 12px;
        margin-bottom: 2px;
        user-select: none;
    }

    input[type="range"] {
        height: 12px;
        width: 100%;
    }

    input[type="range"]::-webkit-slider-thumb {
        width: 22px;
        height: 22px;
        margin-top: -6px;
    }

    input[type="range"]::-moz-range-thumb {
        width: 22px;
        height: 22px;
    }

    button {
        padding: 10px 0;
        font-size: 12px;
        border-radius: 10px;
        flex-grow: 1;
        user-select: none;
    }

    #ui-buttons {
        gap: 10px;
        margin-top: 16px;
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        width: 100%;
    }

    #tooltip {
        font-size: 12px;
        padding: 8px 10px;
    }
}

.light-mode {
    background-color: var(--light-bg);
    color: var(--light-text);
    border: 1px solid var(--light-border);
    box-shadow: 0 8px 32px 0 rgba(0, 123, 255, 0.25);
}

.dark-mode {
    background-color: var(--dark-bg);
    color: var(--dark-text);
    border: 1px solid var(--dark-border);
    box-shadow: 0 8px 32px 0 rgba(0, 123, 255, 0.5);
}

#controls-container h2 {
    margin: 0 0 10px 0;
    font-size: 26px;
    font-weight: 600;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: inherit;
    text-shadow: 0 0 5px rgba(0, 123, 255, 0.7);
}

#controls-container h3 {
    margin: 0 0 20px 0;
    font-size: 18px;
    font-weight: 500;
    border-bottom: 2px solid;
    padding-bottom: 12px;
    border-color: inherit;
    letter-spacing: 0.5px;
}

.slider-container {
    margin-bottom: 18px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 15px;
    font-weight: 600;
    color: inherit;
    user-select: none;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 10px;
    border-radius: 10px;
    outline: none;
    transition: background-color 0.3s;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.dark-mode input[type="range"] {
    background: var(--dark-slider-track);
}

.light-mode input[type="range"] {
    background: var(--light-slider-track);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--ui-blue);
    border-radius: 50%;
    cursor: pointer;
    border: 4px solid white;
    margin-top: -8px;
    box-shadow: 0 0 8px var(--ui-blue);
    transition: background-color 0.3s, box-shadow 0.3s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background-color: #0056b3;
    box-shadow: 0 0 12px #0056b3;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--ui-blue);
    border-radius: 50%;
    cursor: pointer;
    border: 4px solid white;
    box-shadow: 0 0 8px var(--ui-blue);
    transition: background-color 0.3s, box-shadow 0.3s;
}

input[type="range"]::-moz-range-thumb:hover {
    background-color: #0056b3;
    box-shadow: 0 0 12px #0056b3;
}

#ui-buttons {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

button {
    padding: 12px 0;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    flex-grow: 1;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.8px;
    user-select: none;
}

#tooltip {
    position: absolute;
    display: none;
    padding: 10px 15px;
    background-color: rgba(0, 0, 0, 0.75);
    color: white;
    border-radius: 8px;
    pointer-events: none;
    font-size: 16px;
    font-weight: 500;
    user-select: none;
    text-shadow: 0 0 5px rgba(0, 123, 255, 0.7);
}

#hamburger-button {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
    width: 35px;
    height: 30px;
    background: transparent;
    border: none;
    color: white;
    font-size: 28px;
    cursor: pointer;
    user-select: none;
    transition: color 0.3s;
}

#hamburger-button:hover {
    color: var(--ui-blue);
}

@media (max-width: 600px) {
    body {
        padding-bottom: 50px;
    }
}

#controls-container {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#controls-container.hidden {
    transform: translateX(-280px);
    opacity: 0;
    pointer-events: none;
}