:root {
    --bg-deep: #0b0a1f;
    --accent-a: #4ade80;
    --accent-b: #ffcf4d;
    --accent-c: #7c5cff;
    --accent-gradient: linear-gradient(135deg, var(--accent-a), var(--accent-b) 55%, var(--accent-c));
    --text-main: #f5f4fb;
    --text-dim: rgba(245, 244, 251, 0.65);
    --card-bg: rgba(255, 255, 255, 0.06);
    --card-border: rgba(255, 255, 255, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    background: var(--bg-deep);
    color: var(--text-main);
    margin: 0;
    height: 100vh;
    height: 100dvh;
    font-family: 'Poppins', 'Comic Sans', cursive;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    padding: 0.6rem;
}

.bg-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(45rem 45rem at 15% 10%, rgba(74, 222, 128, 0.22), transparent 60%),
        radial-gradient(35rem 35rem at 90% 15%, rgba(255, 207, 77, 0.2), transparent 60%),
        linear-gradient(180deg, rgba(11, 10, 31, 0.9), rgba(11, 10, 31, 0.98));
}

.back-link {
    position: fixed;
    top: 1.25rem;
    left: 1.25rem;
    z-index: 2;
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    backdrop-filter: blur(10px);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.back-link:hover {
    color: var(--text-main);
    border-color: rgba(255, 255, 255, 0.3);
}

.game-shell {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 480px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: clamp(0.4rem, 1.6vh, 0.9rem);
}

.hud-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
}

.hud-chip {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 0.75rem;
    padding: 0.4rem 0.9rem;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.hud-chip span {
    color: var(--accent-b);
}

.canvas-wrap {
    position: relative;
    flex: 1 1 auto;
    min-height: 0;
    width: auto;
    max-width: min(92vw, 460px);
    max-height: 100%;
    aspect-ratio: 360 / 560;
    border-radius: 1.25rem;
    overflow: hidden;
    box-shadow: 0 25px 60px -25px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.14);
    touch-action: none;
    cursor: grab;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.hint {
    color: var(--text-dim);
    font-size: 0.8rem;
    text-align: center;
    max-width: 20rem;
}

.touch-controls {
    display: none;
    width: 100%;
    max-width: 640px;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    padding: 0 0.5rem;
    user-select: none;
}

@media (hover: none), (pointer: coarse) {
    .touch-controls {
        display: flex;
    }
}

.dpad-btn {
    width: 4.5rem;
    height: 4.5rem;
    border: 1px solid var(--card-border);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
    font-size: 1.4rem;
    border-radius: 1rem;
    backdrop-filter: blur(10px);
    touch-action: none;
    cursor: pointer;
}

.dpad-btn:active,
.dpad-btn.is-pressed {
    background: var(--accent-gradient);
    color: #0b2c17;
    border-color: transparent;
}

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(11, 10, 31, 0.78);
    backdrop-filter: blur(4px);
}

.overlay[hidden] {
    display: none;
}

.overlay__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    gap: 0.6rem;
}

.overlay__title {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.overlay__desc {
    color: var(--text-dim);
    font-size: 0.9rem;
    max-width: 16rem;
}

.overlay__btn {
    margin-top: 0.5rem;
    background: var(--accent-gradient);
    color: #0b2c17;
    border: none;
    font-family: inherit;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.65rem 1.8rem;
    border-radius: 0.85rem;
    cursor: pointer;
}