:root {
    color-scheme: dark;
    --background: #0a0707;
    --panel: rgba(15, 17, 14, 0.9);
    --panel-hover: #181b18;
    --border: rgba(230, 226, 222, 0.2);
    --strong-border: rgba(236, 238, 229, 0.4);
    --text: #eaece1;
    --muted: #8d9288;
    --accent: #c4ee6c;
}

* {
    box-sizing: border-box;
}

html,body {
    width: 100%;
    height: 100%;
}

body {
    margin: 0;
    overflow: hidden;
    background: var(--background);
    color: var(--text);
    font-family: Arial, sans-serif;
    font-size: 12px;
}
button {
    min-height: 32px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--panel);
    cursor: pointer;
}
button:hover {
    background: var(--panel-hover);
    border-color: var(--strong-border);
}
button.active {
    color: #090b09;
    background: var(--accent);
    border-color: var(--accent);
}
#gravity01 {
    display: block;
    width: 100vw;
    height: 100vh;
    cursor: crosshair;
}
#topBar {
    position: fixed;
    top: 12px;
    left: 12px;
    right: 12px;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 5px;
    pointer-events: none;
}
#topBar > * {
    pointer-events: auto;
}
.back-btn {
    min-height: 34px;
    padding: 0 11px;
    display: flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--panel);
    color: var(--text);
    text-decoration: none;
}
#stats {
    display: flex;
    gap: 14px;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--panel);
    color: var(--muted);
}
#stats b {
    color: var(--text);
    font-weight: normal;
}
.top-actions {
    margin-left: auto;
    display: flex;
    gap: 4px;
}
.top-actions button {
    padding: 0 12px;
}
#controls {
    position: fixed;
    top: 58px;
    left: 12px;
    z-index: 15;
    width: 240px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    pointer-events: none;
}
#controls > * {
    pointer-events: auto;
}
.panel {
    border: 1px solid var(--border);
    background: var(--panel);
}
.panel h2 {
    margin: 0;
    padding: 8px 9px;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    font-weight: normal;
}
.panel > *:not(h2) {
    margin-left: 9px;
    margin-right: 9px;
}
.panel > *:last-child {
    margin-bottom: 9px;
}
.control-label {
    display: block;
    margin-top: 10px;
    margin-bottom: 4px;
    color: var(--muted);
}
.range-label {
    display: flex;
    justify-content: space-between;
}
.range-label output {
    color: var(--text);
}
input[type="range"] {
    width: calc(100% - 18px);
    accent-color: var(--accent);
}
.checkbox-control {
    margin-top: 9px;
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--muted);
    cursor: pointer;
}
.checkbox-control input {
    margin: 0;
    accent-color: var(--accent);
}
.body-presets {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin-top: 9px;
}
.body-presets button {
    margin: 0;
}