html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #000;
}

#canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: block;
    cursor: crosshair;
    object-fit: fill; /* Stretch to fill, don't preserve aspect ratio */
}

.controls-panel {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(20, 20, 30, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    width: 320px;
    color: #fff;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    max-height: 90vh;
    overflow-y: auto;
    transition: all 0.3s ease;
}

.controls-panel h2 {
    margin: 0 0 20px 0;
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.value-display {
    float: right;
    color: #4a9eff;
    font-weight: 600;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #4a9eff;
    cursor: pointer;
    transition: all 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: #6bb0ff;
    transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #4a9eff;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

input[type="range"]::-moz-range-thumb:hover {
    background: #6bb0ff;
    transform: scale(1.2);
}

input[type="number"] {
    width: 100%;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: #fff;
    font-size: 14px;
}

input[type="number"]:focus {
    outline: none;
    border-color: #4a9eff;
}

.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 20px;
}

button {
    padding: 10px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

button:active {
    transform: translateY(0);
}

button.secondary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

button.reload {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.toggle-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.toggle-btn:hover {
    background: rgba(255, 255, 255, 0.08);
}

.toggle-btn.active {
    background: rgba(74, 158, 255, 0.2);
    border-color: #4a9eff;
}

.toggle-switch {
    width: 44px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    position: relative;
    transition: all 0.3s;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    top: 3px;
    left: 3px;
    transition: all 0.3s;
}

.toggle-btn.active .toggle-switch {
    background: #4a9eff;
}

.toggle-btn.active .toggle-switch::after {
    left: 23px;
}

.info-text {
    font-size: 11px;
    color: #666;
    margin-top: 8px;
    line-height: 1.4;
}

.minimize-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 4px;
    color: #fff;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.minimize-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.controls-panel.minimized {
    width: auto;
    padding: 15px;
}

.controls-panel.minimized .panel-content {
    display: none;
}

.controls-panel.minimized h2 {
    margin: 0;
    border: none;
    padding: 0;
}

/* Custom scrollbar for the panel */
.controls-panel::-webkit-scrollbar {
    width: 8px;
}

.controls-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.controls-panel::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.controls-panel::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}