:root {
    --bg: #070914;
    --panel: #0f1324;
    --ink: #d9e8ff;
    --muted: #93a5cc;
    --cyan: #3cf0ff;
    --magenta: #ff57d8;
    --amber: #ffcc47;
    --line: #243158;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Inter", "Segoe UI", system-ui, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 20% 20%, rgba(60, 240, 255, 0.12), transparent 45%),
        radial-gradient(circle at 78% 18%, rgba(255, 87, 216, 0.12), transparent 50%),
        linear-gradient(160deg, #05070f, #070914 40%, #05060d);
    display: flex;
    justify-content: center;
    padding: 1.25rem;
}

.app {
    width: min(960px, 100%);
    display: grid;
    gap: 1rem;
}

.topbar,
.hud,
.controls,
.stage-wrap {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(15, 19, 36, 0.95), rgba(9, 12, 24, 0.95));
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.topbar {
    padding: 1rem 1.1rem;
}

.back {
    color: var(--amber);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.topbar h1 {
    margin: 0.55rem 0 0.25rem;
    font-size: clamp(1.45rem, 3vw, 2rem);
}

.topbar p {
    margin: 0;
    color: var(--muted);
}

.hud {
    padding: 0.8rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.65rem;
}

.stat {
    border: 1px solid #1f2a4e;
    border-radius: 10px;
    background: rgba(6, 8, 17, 0.75);
    padding: 0.5rem 0.65rem;
}

.label {
    display: block;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.value {
    font-weight: 700;
    font-size: 1.1rem;
    margin-top: 0.15rem;
    display: block;
}

.stage-wrap {
    position: relative;
    overflow: hidden;
}

canvas {
    width: 100%;
    height: auto;
    display: block;
    background: #000;
    image-rendering: pixelated;
}

.scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.05) 0px,
        rgba(255, 255, 255, 0.05) 1px,
        transparent 1px,
        transparent 4px
    );
    mix-blend-mode: soft-light;
}

.controls {
    padding: 0.9rem;
    display: grid;
    gap: 0.7rem;
}

.row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    align-items: center;
}

.row-label {
    font-size: 0.78rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-right: 0.2rem;
    min-width: 64px;
}

button {
    border: 1px solid #2a3a6b;
    border-radius: 8px;
    background: #121937;
    color: var(--ink);
    padding: 0.48rem 0.72rem;
    font-size: 0.92rem;
    cursor: pointer;
    transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

button:hover {
    transform: translateY(-1px);
    border-color: #4f66b4;
}

button:active {
    transform: translateY(1px);
}

.chip.active {
    border-color: var(--amber);
    box-shadow: 0 0 0 1px rgba(255, 204, 71, 0.35);
}

.chip[data-species="1"] { color: var(--cyan); }
.chip[data-species="2"] { color: var(--magenta); }
.chip[data-species="3"] { color: var(--amber); }

.hint {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.4;
}

@media (max-width: 700px) {
    body {
        padding: 0.7rem;
    }

    .row-label {
        width: 100%;
    }
}