@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;700&display=swap');

:root {
    --color-bg:             #0d0d1a;
    --color-primary:        #00aaff;
    --color-primary-dim:    #0055aa;
    --color-primary-bright: #88ddff;
    --color-accent:         #ffaa00;
    --color-accent-dim:     #aa7700;
    --color-text:           #e0e0e0;
    --color-text-dim:       #888888;
    --font-mono: 'Roboto Mono', monospace;
}

body, html {
    height: 100%;
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    font-size: 12px;
    color: var(--color-text);
    font-family: var(--font-mono);
    overflow: hidden;
    letter-spacing: 1px;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 16px;
    box-sizing: border-box;
}

.header {
    text-align: center;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--color-primary-dim);
    padding-bottom: 12px;
}

.header h1 {
    margin: 0;
    font-size: 22px;
    letter-spacing: 4px;
    color: var(--color-primary-bright);
    text-shadow: 0 0 12px rgba(0, 170, 255, 0.6);
    font-weight: 700;
}

.subtitle {
    margin: 5px 0 0 0;
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--color-primary);
    opacity: 0.7;
}

.main-content {
    display: flex;
    gap: 16px;
    flex: 1;
    min-height: 0;
}

.canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: rgba(13, 13, 26, 0.6);
    border: 1px solid var(--color-primary-dim);
    box-shadow:
        0 0 20px rgba(0, 170, 255, 0.15),
        inset 0 0 30px rgba(0, 0, 0, 0.5);
}

/* Three.js injects its own canvas — make it fill the container */
.canvas-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.controls-panel {
    width: 280px;
    background: rgba(13, 13, 26, 0.90);
    border: 1px solid var(--color-primary-dim);
    padding: 14px;
    overflow-y: auto;
    box-shadow: 0 0 20px rgba(0, 170, 255, 0.1);
    display: flex;
    flex-direction: column;
}

.control-section {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(0, 85, 170, 0.35);
}

.control-section:last-child {
    border-bottom: none;
}

.control-section h3 {
    margin: 0 0 10px 0;
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--color-primary-bright);
    font-weight: 700;
    text-shadow: 0 0 6px rgba(0, 170, 255, 0.4);
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

button {
    background: transparent;
    border: 1px solid var(--color-primary-dim);
    color: var(--color-primary);
    padding: 8px 12px;
    cursor: pointer;
    font-size: 11px;
    letter-spacing: 1px;
    font-family: var(--font-mono);
    font-weight: 700;
    transition: color 0.15s, border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

button:hover {
    color: var(--color-primary-bright);
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(0, 170, 255, 0.35);
}

button:active {
    background: var(--color-primary-dim);
    color: var(--color-bg);
}

.slider-control {
    margin-bottom: 12px;
}

.slider-control label {
    display: block;
    margin-bottom: 6px;
    font-size: 11px;
    color: var(--color-text-dim);
    letter-spacing: 1px;
}

.slider-control span {
    color: var(--color-accent);
    font-weight: bold;
    text-shadow: 0 0 5px rgba(255, 170, 0, 0.5);
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 3px;
    background: var(--color-primary-dim);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 7px rgba(0, 170, 255, 0.8);
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--color-primary-bright);
    box-shadow: 0 0 12px rgba(136, 221, 255, 1);
}

input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 7px rgba(0, 170, 255, 0.8);
    cursor: pointer;
    border: none;
}

/* Scrollbar */
.controls-panel::-webkit-scrollbar {
    width: 6px;
}

.controls-panel::-webkit-scrollbar-track {
    background: rgba(0, 85, 170, 0.1);
}

.controls-panel::-webkit-scrollbar-thumb {
    background: var(--color-primary-dim);
    border-radius: 3px;
}

.controls-panel::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

.checkbox-control {
    display: flex;
    align-items: center;
    margin: 6px 0;
}

.checkbox-control label {
    color: var(--color-text-dim);
    font-size: 11px;
    letter-spacing: 1px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-control input[type="checkbox"] {
    accent-color: var(--color-primary);
    width: 13px;
    height: 13px;
    cursor: pointer;
}

#readout {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid rgba(0, 85, 170, 0.25);
    opacity: 0.4;
}

.readout-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
    font-size: 10px;
    letter-spacing: 1px;
}

.readout-label {
    color: var(--color-primary-dim);
}

.readout-val {
    color: var(--color-primary);
    font-weight: bold;
}