:root {
    --ink: #10131a;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    background: #9fd3ff;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: #fff;
    -webkit-tap-highlight-color: transparent;
}

/* The canvas owns all pointer gestures — no scroll/zoom hijacking the drag. */
#scene {
    display: block;
    width: 100vw;
    height: 100vh;
    touch-action: none;
}

.home {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 10;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    font-size: 22px;
    line-height: 1;
    text-decoration: none;
    color: #fff;
    background: rgba(16, 19, 26, 0.45);
    border-radius: 12px;
    backdrop-filter: blur(4px);
}

.hud {
    position: fixed;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 18px;
    padding: 8px 16px;
    background: rgba(16, 19, 26, 0.45);
    border-radius: 14px;
    backdrop-filter: blur(4px);
    font-size: 15px;
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.hud b { font-variant-numeric: tabular-nums; }

.reset-btn {
    position: fixed;
    top: 14px;
    right: 14px;
    z-index: 10;
    padding: 9px 16px;
    font: inherit;
    font-size: 14px;
    color: #fff;
    background: rgba(16, 19, 26, 0.45);
    border: none;
    border-radius: 12px;
    backdrop-filter: blur(4px);
    cursor: pointer;
}
.reset-btn:active { transform: scale(0.96); }

.hint {
    position: fixed;
    bottom: 54px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    margin: 0;
    padding: 8px 16px;
    max-width: 90vw;
    text-align: center;
    font-size: 14px;
    background: rgba(16, 19, 26, 0.4);
    border-radius: 12px;
    backdrop-filter: blur(4px);
    transition: opacity 0.6s ease;
}
.hint.is-hidden { opacity: 0; pointer-events: none; }

/* ?dev tuning panel — hidden in normal play, shown when the URL has ?dev. */
.dev-panel {
    position: fixed;
    right: 14px;
    bottom: 72px;
    z-index: 12;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 220px;
    max-width: 280px;
    max-height: 72vh;
    overflow-y: auto;
    background: rgba(16, 19, 26, 0.6);
    border-radius: 12px;
    backdrop-filter: blur(4px);
    font-size: 13px;
}
.dev-rows {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.dev-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.dev-row label {
    display: flex;
    justify-content: space-between;
    font-variant-numeric: tabular-nums;
}
.dev-row input[type="range"] {
    width: 100%;
    margin: 0;
}
.dev-btn {
    padding: 6px 10px;
    font: inherit;
    font-size: 13px;
    color: #fff;
    background: rgba(255, 255, 255, 0.14);
    border: none;
    border-radius: 8px;
    cursor: pointer;
}
.dev-btn:active { transform: scale(0.96); }
.dev-msg {
    min-height: 1em;
    font-size: 12px;
    opacity: 0.85;
}

/* Site footer — matches the rest of The Madderverse. */
.footer {
    position: fixed;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 6px 14px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.92);
    background: rgba(16, 19, 26, 0.4);
    border-radius: 12px;
    backdrop-filter: blur(4px);
    white-space: nowrap;
}
.footer a { color: #fff; text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer .sep { opacity: 0.5; }