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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #fff;
    overflow-x: hidden;
}

.game-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.game-header {
    text-align: center;
    margin-bottom: 20px;
}

.game-header h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3);
    background-size: 400% 400%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease-in-out infinite;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 20px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 100px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #feca57;
}

.game-area {
    position: relative;
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

#game-canvas {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-width: 100%;
    height: auto;
}

.game-overlay {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    backdrop-filter: blur(5px);
}

.overlay-content {
    text-align: center;
    padding: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.overlay-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #feca57;
}

.overlay-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.overlay-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.game-btn {
    padding: 15px 30px;
    font-size: 1.1rem;
    border: none;
    border-radius: 10px;
    background: linear-gradient(45deg, #ff6b6b, #feca57);
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.game-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 107, 107, 0.3);
}

.game-btn:active {
    transform: translateY(0);
}

.controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.controls h3 {
    text-align: center;
    margin-bottom: 20px;
    color: #feca57;
    font-size: 1.5rem;
}

.desktop-controls, .mobile-controls {
    background: rgba(255, 255, 255, 0.1);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.key {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-weight: bold;
    min-width: 60px;
    text-align: center;
    font-size: 0.9rem;
}

.touch-area {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.touch-zone {
    background: linear-gradient(45deg, #ff6b6b, #feca57);
    color: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    user-select: none;
    font-size: 1.1rem;
}

.touch-zone:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 107, 107, 0.3);
}

.touch-zone:active {
    transform: scale(0.95);
    background: linear-gradient(45deg, #feca57, #ff6b6b);
}

.power-ups-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 25px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.power-ups-info h3 {
    text-align: center;
    margin-bottom: 20px;
    color: #feca57;
    font-size: 1.5rem;
}

.power-up-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.power-up-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.power-up-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.power-up-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.power-up-icon.expand {
    background: linear-gradient(45deg, #48dbfb, #0abde3);
}

.power-up-icon.multi {
    background: linear-gradient(45deg, #ff9ff3, #f368e0);
}

.power-up-icon.life {
    background: linear-gradient(45deg, #ff6b6b, #ee5a52);
}

.power-up-icon.slow {
    background: linear-gradient(45deg, #feca57, #ff9f43);
}

.power-up-icon::before {
    content: "•";
    color: white;
}

.hidden {
    display: none !important;
}

/* Animations */
@keyframes levelUp {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); color: #feca57; }
    100% { transform: scale(1); }
}

@keyframes scoreBonus {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); color: #48dbfb; }
    100% { transform: scale(1); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
    #game-canvas {
        width: 100%;
        max-width: 600px;
    }
    
    .game-header h1 {
        font-size: 2.5rem;
    }
    
    .stats {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .game-container {
        padding: 15px;
    }
    
    .game-header h1 {
        font-size: 2rem;
    }
    
    .stats {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .stat-item {
        padding: 10px 15px;
        min-width: 80px;
    }
    
    .controls {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .overlay-content {
        padding: 30px 20px;
        margin: 20px;
    }
    
    .overlay-content h2 {
        font-size: 2rem;
    }
    
    .power-up-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .game-header h1 {
        font-size: 1.8rem;
    }
    
    .overlay-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .game-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .touch-area {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .touch-zone {
        padding: 15px;
    }
}

/* Mobile-specific styles */
@media (hover: none) and (pointer: coarse) {
    .mobile-controls {
        order: -1;
    }
    
    .desktop-controls {
        opacity: 0.7;
    }
    
    .touch-zone:hover {
        transform: none;
        box-shadow: none;
    }
}