* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: rgb(10, 10, 15);
    --panel-bg: rgba(20, 20, 30, 0.95);
    --text: #ccc;
    --text-muted: #888;
    --text-bright: #eee;
    --border: rgba(255, 255, 255, 0.06);
    --input-bg: rgba(255, 255, 255, 0.06);
    --input-border: rgba(255, 255, 255, 0.1);
    --input-focus: rgba(255, 255, 255, 0.25);
    --btn-bg: rgba(255, 255, 255, 0.08);
    --btn-hover: rgba(255, 255, 255, 0.15);
    --btn-border: rgba(255, 255, 255, 0.12);
    --thumb: #aaa;
    --range-bg: rgba(255, 255, 255, 0.08);
    --optgroup-color: #999;
    --option-color: #ddd;
    --custom-name: #8a8;
    --inline-span: #666;
    --adv-label: #bbb;
    --accent: #888;
    color-scheme: dark;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: rgb(240, 240, 245);
        --panel-bg: rgba(245, 245, 250, 0.97);
        --text: #333;
        --text-muted: #777;
        --text-bright: #111;
        --border: rgba(0, 0, 0, 0.1);
        --input-bg: rgba(0, 0, 0, 0.04);
        --input-border: rgba(0, 0, 0, 0.15);
        --input-focus: rgba(0, 0, 0, 0.3);
        --btn-bg: rgba(0, 0, 0, 0.06);
        --btn-hover: rgba(0, 0, 0, 0.12);
        --btn-border: rgba(0, 0, 0, 0.15);
        --thumb: #666;
        --range-bg: rgba(0, 0, 0, 0.1);
        --optgroup-color: #555;
        --option-color: #333;
        --custom-name: #4a7a4a;
        --inline-span: #999;
        --adv-label: #555;
        --accent: #666;
        color-scheme: light;
    }
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
    font-size: 13px;
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
    width: 100vw;
}

#app {
    display: flex;
    height: 100vh;
    height: 100dvh;
    width: 100vw;
    position: relative;
}

#canvas {
    flex: 1;
    display: block;
    width: 100%;
    height: 100%;
}

#bloom-canvas {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    filter: blur(12px);
    opacity: 0;
    mix-blend-mode: screen;
    display: none;
}

#controls {
    width: 280px;
    min-width: 280px;
    padding: 20px;
    background: var(--panel-bg);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

#controls-toggle {
    display: none;
}

h1 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-bright);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
}

.github-link {
    margin-left: auto;
    color: var(--text-muted);
    display: flex;
    transition: color 0.15s;
}

.github-link:hover {
    color: var(--text-bright);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

select,
input[type="number"] {
    background: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    padding: 6px 8px;
    font-family: inherit;
    font-size: 12px;
    outline: none;
}

select:focus,
input[type="number"]:focus {
    border-color: var(--input-focus);
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: var(--range-bg);
    height: 4px;
    border-radius: 2px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--thumb);
    cursor: pointer;
}

.inline {
    display: flex;
    align-items: center;
    gap: 6px;
}

.inline input[type="number"] {
    width: 50px;
}

.inline span {
    color: var(--inline-span);
    font-size: 12px;
}

#custom-name {
    color: var(--custom-name);
    font-size: 11px;
    font-style: italic;
}

.buttons {
    display: flex;
    gap: 8px;
    margin-top: 6px;
    flex-wrap: wrap;
}

button {
    flex: 1;
    padding: 8px 0;
    background: var(--btn-bg);
    color: var(--text);
    border: 1px solid var(--btn-border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s;
    min-width: 60px;
}

button:hover:not(:disabled) {
    background: var(--btn-hover);
}

button:disabled {
    opacity: 0.3;
    cursor: default;
}

optgroup {
    font-style: normal;
    font-weight: 600;
    color: var(--optgroup-color);
}

option {
    font-weight: 400;
    color: var(--option-color);
    padding: 2px 4px;
}

.advanced-section {
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0;
}

.advanced-section summary {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px 10px;
    user-select: none;
}

.advanced-section summary:hover {
    color: var(--text);
}

.advanced-section[open] summary {
    border-bottom: 1px solid var(--border);
    margin-bottom: 10px;
}

.advanced-section[open] {
    padding: 0 10px 10px;
}

.advanced-section .control-group {
    margin-bottom: 10px;
}

.advanced-section .control-group:last-child {
    margin-bottom: 0;
}

input[type="checkbox"] {
    accent-color: var(--accent);
    vertical-align: middle;
    margin-right: 4px;
}

.advanced-section label {
    text-transform: none;
    font-size: 12px;
    color: var(--adv-label);
    letter-spacing: normal;
}

@media (max-width: 720px) {
    #app {
        flex-direction: column;
    }

    #canvas {
        flex: 1;
        min-height: 0;
    }

    #bloom-canvas {
        width: 100% !important;
        height: var(--canvas-height, 50vh) !important;
    }

    #controls {
        width: 100%;
        min-width: unset;
        max-height: 45dvh;
        border-left: none;
        border-top: 1px solid var(--border);
        padding: 14px 16px;
        gap: 12px;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    #controls.collapsed {
        max-height: 44px;
        overflow: hidden;
        padding-bottom: 0;
    }

    #controls-toggle {
        display: block;
        position: absolute;
        top: 0;
        right: 0;
        background: none;
        border: none;
        color: var(--text-muted);
        font-size: 18px;
        padding: 8px 12px;
        min-width: unset;
        flex: none;
        z-index: 1;
    }

    #controls-toggle:hover {
        color: var(--text);
    }

    h1 {
        font-size: 14px;
        position: relative;
    }

    input[type="range"]::-webkit-slider-thumb {
        width: 20px;
        height: 20px;
    }

    input[type="range"] {
        height: 6px;
    }

    select,
    input[type="number"] {
        padding: 8px 10px;
        font-size: 14px;
    }

    button {
        padding: 10px 0;
        font-size: 13px;
    }

    .buttons {
        gap: 6px;
    }
}