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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

#game-container {
    width: 100%;
    max-width: 500px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

#game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: linear-gradient(135deg, #334155, #1E293B);
    color: white;
}

.game-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.stats {
    display: flex;
    gap: 20px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-label {
    font-size: 0.7rem;
    opacity: 0.9;
    text-transform: uppercase;
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 700;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

#game-area {
    padding: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.simon-board {
    position: relative;
    width: 300px;
    height: 300px;
    background: #333;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.simon-btn {
    position: absolute;
    width: 135px;
    height: 135px;
    cursor: pointer;
    opacity: 0.8;
    transition: all 0.1s;
}

.simon-btn:active,
.simon-btn.active {
    opacity: 1;
    transform: scale(0.98);
    filter: brightness(1.5);
}

.top-left {
    top: 10px;
    left: 10px;
    background: #EF4444;
    border-radius: 100% 0 0 0;
}

.top-right {
    top: 10px;
    right: 10px;
    background: #3B82F6;
    border-radius: 0 100% 0 0;
}

.bottom-left {
    bottom: 10px;
    left: 10px;
    background: #EAB308;
    border-radius: 0 0 0 100%;
}

.bottom-right {
    bottom: 10px;
    right: 10px;
    background: #10B981;
    border-radius: 0 0 100% 0;
}

.center-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: white;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.1);
}

.start-btn {
    background: #334155;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.start-btn:hover {
    background: #475569;
}

.status-text {
    margin-top: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #64748B;
    text-align: center;
}