:root {
    color-scheme: dark;
    --bg: #0e1017;
    --panel: #171a24;
    --border: #2a2f3d;
    --text: #e6e9f0;
    --muted: #8891a5;
    --accent: #6ac0ff;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#app { height: 100%; }

.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1320px;
    margin: 0 auto;
    padding: 10px 14px;
    gap: 10px;
}

header h1 { font-size: 20px; margin: 0 0 8px; font-weight: 700; }
header h1 .sub { font-size: 13px; color: var(--muted); font-weight: 400; }

.tabs { display: flex; gap: 6px; }
.tab {
    background: var(--panel);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px 8px 0 0;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
}
.tab.active { background: var(--accent); color: #05070d; border-color: var(--accent); font-weight: 700; }

.controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 13px;
}
.controls label { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); }
.controls .hint { color: var(--muted); }
.controls .grp { display: inline-flex; align-items: center; gap: 4px; }
.controls select, .controls button, .controls input[type=range] { accent-color: var(--accent); }

.controls button, .controls select {
    background: #212633;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 5px 10px;
    font-size: 13px;
    cursor: pointer;
}
.controls button:hover { border-color: var(--accent); }
.controls .spd.active { background: var(--accent); color: #05070d; border-color: var(--accent); font-weight: 700; }

.stage {
    position: relative;
    flex: 1;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}
#game-canvas {
    max-width: 100%;
    max-height: 100%;
    aspect-ratio: 16 / 9;
    image-rendering: pixelated;
    display: block;
}
.loading {
    position: absolute;
    color: var(--muted);
    font-size: 14px;
}

footer {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--muted);
}
footer .status { font-family: "Courier New", monospace; color: var(--accent); }

/* Blazor boot / error UI (kept from the template, referenced by index.html) */
#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: #111;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }

.loading-progress { position: absolute; display: block; width: 8rem; height: 8rem; inset: 20vh 0 auto 0; margin: 0 auto; }
.loading-progress circle { fill: none; stroke: #2a2f3d; stroke-width: 0.6rem; transform-origin: 50% 50%; transform: rotate(-90deg); }
.loading-progress circle:last-child { stroke: var(--accent); stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%; transition: stroke-dasharray 0.05s ease-in-out; }
.loading-progress-text { position: absolute; text-align: center; font-weight: bold; inset: calc(20vh + 3.25rem) 0 auto 0.2rem; color: var(--text); }
.loading-progress-text:after { content: var(--blazor-load-percentage-text, "Loading"); }