.game-area {
    position: relative;
    flex: 1;
    min-height: 0;
    background: var(--game-area-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.3s ease;
}

.circle-outline {
    width: 80px;
    height: 80px;
    border: 3px solid var(--outline-color);
    border-radius: 50%;
    position: absolute;
    background: transparent;
    opacity: 0.6;
    transition: border-color 0.3s ease;
    cursor: pointer;
    pointer-events: auto;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
}

.circle-outline.active-circle {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    border-color: #ff4757;
    opacity: 1;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
    transform: scale(1);
    z-index: 15;
}

/* Circle type variations for stage system */
.circle-outline.active-circle.snap-circle {
    background: linear-gradient(45deg, #00d084, #00a868);
    border-color: #00b574;
    box-shadow: 0 4px 15px rgba(0, 208, 132, 0.4);
}

.circle-outline.active-circle.backstab-circle {
    background: linear-gradient(45deg, #ff9500, #ff7b00);
    border-color: #ff8800;
    box-shadow: 0 4px 15px rgba(255, 149, 0, 0.4);
}

.circle-outline.active-circle.avoid-circle {
    background: linear-gradient(45deg, #ff3b30, #e02020);
    border-color: #ff2d20;
    box-shadow: 0 4px 15px rgba(255, 59, 48, 0.4);
}

/* Dark theme adjustments for circle types */
[data-theme="dark"] .circle-outline.active-circle.snap-circle {
    background: linear-gradient(45deg, #00ff9d, #00d88a);
    box-shadow: 0 4px 15px rgba(0, 255, 157, 0.5);
}

[data-theme="dark"] .circle-outline.active-circle.backstab-circle {
    background: linear-gradient(45deg, #ffaa44, #ff9922);
    box-shadow: 0 4px 15px rgba(255, 170, 68, 0.5);
}

[data-theme="dark"] .circle-outline.active-circle.avoid-circle {
    background: linear-gradient(45deg, #ff5050, #ff3030);
    box-shadow: 0 4px 15px rgba(255, 80, 80, 0.5);
}

/* System theme adjustments for circle types */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .circle-outline.active-circle.snap-circle {
        background: linear-gradient(45deg, #00ff9d, #00d88a);
        box-shadow: 0 4px 15px rgba(0, 255, 157, 0.5);
    }
    
    :root:not([data-theme="light"]) .circle-outline.active-circle.backstab-circle {
        background: linear-gradient(45deg, #ffaa44, #ff9922);
        box-shadow: 0 4px 15px rgba(255, 170, 68, 0.5);
    }
    
    :root:not([data-theme="light"]) .circle-outline.active-circle.avoid-circle {
        background: linear-gradient(45deg, #ff5050, #ff3030);
        box-shadow: 0 4px 15px rgba(255, 80, 80, 0.5);
    }
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3); }
    100% { transform: scale(1.1); box-shadow: 0 6px 20px rgba(255, 107, 107, 0.5); }
}