:root {
    --bg: #070915;
    --panel: #121933;
    --panel-2: #1a2450;
    --cyan: #63f0ff;
    --pink: #ff5dd1;
    --amber: #ffd062;
    --lime: #b3ff74;
    --text: #eaf1ff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 15% 20%, #1f2760 0%, rgba(31, 39, 96, 0) 40%),
        radial-gradient(circle at 80% 0%, #432267 0%, rgba(67, 34, 103, 0) 42%),
        var(--bg);
    color: var(--text);
}

.app {
    width: min(980px, 94vw);
    margin: 18px auto 26px;
}

.topbar {
    background: linear-gradient(140deg, rgba(18, 25, 51, 0.95), rgba(22, 34, 72, 0.88));
    border: 2px solid #334687;
    border-radius: 14px;
    padding: 14px 18px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

.topbar h1 {
    margin: 8px 0 6px;
    font-size: clamp(1.35rem, 3.7vw, 2rem);
    letter-spacing: 0.04em;
}

.topbar p {
    margin: 0;
    color: #c2d4ff;
}

.back {
    color: var(--cyan);
    text-decoration: none;
    font-weight: 700;
}

.hud {
    margin-top: 12px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.stat {
    background: linear-gradient(165deg, rgba(14, 22, 45, 0.95), rgba(26, 36, 80, 0.88));
    border: 2px solid #2e3d73;
    border-radius: 12px;
    padding: 10px 12px;
}

.label {
    display: block;
    color: #9fb3eb;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.value {
    display: block;
    margin-top: 5px;
    font-size: 1.35rem;
    font-weight: 800;
}

.stage-wrap {
    margin-top: 14px;
    position: relative;
    border: 3px solid #3a4f9a;
    border-radius: 14px;
    overflow: hidden;
    background: #050710;
}

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

.scanlines {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.03) 0,
        rgba(255, 255, 255, 0.03) 1px,
        rgba(0, 0, 0, 0.12) 2px,
        rgba(0, 0, 0, 0.12) 4px
    );
    mix-blend-mode: screen;
}

.overlay {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    background: rgba(3, 5, 13, 0.78);
}

.overlay.hidden {
    display: none;
}

.panel {
    width: min(520px, calc(100% - 36px));
    background: linear-gradient(160deg, rgba(12, 19, 40, 0.96), rgba(28, 40, 83, 0.95));
    border: 2px solid #5970c3;
    border-radius: 12px;
    text-align: center;
    padding: 20px;
}

.panel h2 {
    margin-top: 0;
    margin-bottom: 8px;
    color: var(--cyan);
}

.panel p {
    margin-bottom: 18px;
    color: #c9d8ff;
}

button {
    border: none;
    border-radius: 999px;
    padding: 11px 20px;
    font-weight: 800;
    letter-spacing: 0.03em;
    color: #00131d;
    background: linear-gradient(120deg, var(--cyan), #85fff0);
    cursor: pointer;
}

button:hover {
    filter: brightness(1.08);
}

.controls {
    margin-top: 12px;
    border: 2px solid #2d3f78;
    border-radius: 12px;
    padding: 10px 14px;
    background: rgba(11, 17, 36, 0.9);
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    color: #c8d6ff;
}

.controls strong {
    color: #f9fdff;
}

@media (max-width: 700px) {
    .hud {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .controls {
        flex-direction: column;
        gap: 6px;
    }
}