:root {
    --bg: #0f0f23;
    --card-bg: #1a1a2e;
    --card-border: #2a2a4a;
    --text: #e0e0e0;
    --text-dim: #888;
    --accent: #00d4aa;
    --accent-hover: #00e8bb;
    --danger: #ff6b6b;
    --overlay-bg: rgba(10, 10, 30, 0.85);
    --radius: 12px;
    --radius-sm: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.game-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    max-width: 640px;
    width: 100%;
}

.game-title {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--accent);
}

.hud {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 600px;
    font-size: 1rem;
    font-weight: 600;
    padding: 0 4px;
}

.hud span {
    color: var(--text-dim);
}

.hud .value {
    color: var(--text);
    transition: transform 0.15s ease;
    display: inline-block;
}

.hud .value.flash {
    transform: scale(1.3);
    color: var(--accent);
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    max-width: 600px;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

#game {
    display: block;
    border-radius: var(--radius-sm);
    touch-action: none;
}

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: var(--overlay-bg);
    border-radius: var(--radius-sm);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 10;
    padding: 16px;
    text-align: center;
}

.overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.overlay h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text);
}

.overlay p {
    font-size: 0.95rem;
    color: var(--text-dim);
    line-height: 1.5;
}

.overlay .score-line {
    font-size: 1.1rem;
    color: var(--text);
    font-weight: 600;
}

.btn {
    background: var(--accent);
    color: #0f0f23;
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 28px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s ease, transform 0.1s ease;
    outline: none;
}

.btn:hover, .btn:focus-visible {
    background: var(--accent-hover);
    transform: scale(1.04);
}

.btn:active {
    transform: scale(0.97);
}

.badge {
    display: none;
    background: var(--danger);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    animation: badge-pop 0.4s ease;
}

.badge.visible {
    display: inline-block;
}

@keyframes badge-pop {
    0% { transform: scale(0); }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

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

.dpad {
    display: none;
    grid-template-columns: repeat(3, 56px);
    grid-template-rows: repeat(3, 56px);
    gap: 4px;
    margin-top: 4px;
}

.dpad-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

.dpad-btn:active {
    background: rgba(255, 255, 255, 0.18);
}

.dpad-btn.empty {
    background: transparent;
    border: none;
    pointer-events: none;
}

.dpad-up    { grid-column: 2; grid-row: 1; }
.dpad-left  { grid-column: 1; grid-row: 2; }
.dpad-center{ grid-column: 2; grid-row: 2; }
.dpad-right { grid-column: 3; grid-row: 2; }
.dpad-down  { grid-column: 2; grid-row: 3; }

@media (pointer: coarse), (max-width: 700px) {
    .dpad {
        display: grid;
    }
}

@media (max-width: 500px) {
    .game-card {
        padding: 10px;
        gap: 8px;
        border-radius: 0;
        border: none;
        height: 100%;
        justify-content: center;
    }
    .game-title { font-size: 1.1rem; }
    .hud { font-size: 0.9rem; }
    .overlay h2 { font-size: 1.4rem; }
    .dpad {
        grid-template-columns: repeat(3, 48px);
        grid-template-rows: repeat(3, 48px);
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}