/* Brain-Shift – Reflex color-match game. Dark slate theme, high-contrast pastels */

.brain-shift-content {
    background: var(--surface-color, #161B22);
    color: var(--text-primary, #F8FAFC);
    font-family: 'Segoe UI', system-ui, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
}

.brain-shift-hud {
    display: flex;
    gap: 24px;
    margin-bottom: 12px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent, #ffae00);
}

.brain-shift-hud span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.brain-shift-wrap {
    position: relative;
    display: block;
    touch-action: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
    background: var(--brain-shift-canvas-bg, #1a202c);
    width: 100%;
    max-width: 420px;
    aspect-ratio: 9 / 16;
    min-height: 400px;
}

body.light-theme .brain-shift-wrap {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08), inset 0 0 0 2px rgba(0, 0, 0, 0.06);
    --brain-shift-canvas-bg: #E2E8F0;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: pointer;
    background: var(--brain-shift-canvas-bg, #1a202c);
    touch-action: none;
}

/* Overlays */
.brain-shift-overlay {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.brain-shift-overlay.visible {
    display: flex;
}

.brain-shift-start-overlay {
    background: rgba(26, 32, 44, 0.92);
}

body.light-theme .brain-shift-start-overlay {
    background: rgba(226, 232, 240, 0.95);
}

.brain-shift-game-over-overlay {
    background: rgba(0, 0, 0, 0.8);
}

.brain-shift-overlay-box {
    background: var(--surface-color, #161B22);
    color: var(--text-primary, #F8FAFC);
    border-radius: 16px;
    padding: 28px 36px;
    text-align: center;
    border: 2px solid var(--accent, #ffae00);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    max-width: 320px;
}

.brain-shift-overlay-box h3 {
    margin: 0 0 12px 0;
    font-size: 1.6rem;
    color: var(--accent, #ffae00);
}

.brain-shift-overlay-box p {
    margin: 0 0 20px 0;
    color: var(--text-secondary, #8B949E);
    font-size: 0.95rem;
    line-height: 1.5;
}

.brain-shift-btn {
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 700;
    color: #1a202c;
    background: var(--accent, #ffae00);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.brain-shift-btn:hover {
    background: #ffc933;
    transform: scale(1.03);
}

.brain-shift-btn:active {
    transform: scale(0.98);
}

.brain-shift-hint {
    color: var(--text-secondary, #8B949E);
    font-size: 0.85rem;
    margin-top: 12px;
    text-align: center;
    max-width: 400px;
}

@media (max-width: 480px) {
    .brain-shift-content {
        padding: 12px;
    }

    .brain-shift-hud {
        font-size: 1rem;
        gap: 16px;
    }

    .brain-shift-overlay-box {
        padding: 20px 24px;
    }

    .brain-shift-overlay-box h3 {
        font-size: 1.4rem;
    }
}