* {
    box-sizing: border-box;
}

body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Arial', sans-serif;
    overflow: hidden;
}

#game-container {
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    overflow: hidden;
}

#character-selection {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.95) 0%, rgba(118, 75, 162, 0.95) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;
    z-index: 10;
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

#character-selection h1 {
    font-size: 2.5em;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#instructions {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    max-width: 500px;
    animation: slideUp 0.6s ease-out 0.2s both;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#instructions p {
    margin: 8px 0;
    font-size: 16px;
    line-height: 1.6;
}

#instructions strong {
    color: #ffd700;
    font-weight: bold;
}

#characters {
    display: flex;
    gap: 30px;
    animation: slideUp 0.6s ease-out 0.4s both;
}

.character-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.character-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.character-card img {
    width: 80px;
    height: 80px;
    transition: all 0.3s ease;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.character-card:hover img {
    transform: scale(1.15) rotate(5deg);
}

.character-card span {
    font-size: 18px;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

#game-canvas {
    border: 2px solid #333;
    display: block;
    background: #f5f5f5;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

#score-timer {
    position: absolute;
    top: 15px;
    left: 15px;
    color: white;
    font-size: 18px;
    font-weight: bold;
    display: flex;
    gap: 20px;
    z-index: 5;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

#score-timer span {
    background: rgba(0, 0, 0, 0.7);
    padding: 8px 15px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

#score-timer span:hover {
    background: rgba(0, 0, 0, 0.85);
    transform: scale(1.05);
}

#controls {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 5;
}

#volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.7);
    padding: 8px 15px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 14px;
}

#volume-control label {
    font-weight: bold;
}

#volume-slider {
    width: 100px;
    cursor: pointer;
}

#volume-display {
    min-width: 35px;
    text-align: right;
    font-weight: bold;
}

#game-over, #time-over, #pause-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.95) 0%, rgba(118, 75, 162, 0.95) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 20;
    animation: fadeIn 0.5s ease-in;
    backdrop-filter: blur(5px);
}

#game-over h1, #time-over h1, #pause-overlay h1 {
    font-size: 3em;
    margin: 0 0 20px 0;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
    animation: bounce 0.6s ease-out;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

#game-over p, #time-over p, #pause-overlay p {
    font-size: 1.5em;
    margin: 10px 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

#game-over span, #time-over span {
    color: #ffd700;
    font-weight: bold;
    font-size: 1.2em;
}

#game-over button, #time-over button, #pause-overlay button {
    padding: 15px 30px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

#game-over button:hover, #time-over button:hover, #pause-overlay button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

#game-over button:active, #time-over button:active, #pause-overlay button:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

#pause-overlay {
    background: rgba(0, 0, 0, 0.85);
}

#pause-overlay p {
    font-size: 1.2em;
    margin: 10px 0;
}

#pause-overlay strong {
    color: #ffd700;
}

/* Smooth transitions for all interactive elements */
* {
    transition: background-color 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
}

/* Responsive design */
@media (max-width: 600px) {
    #character-selection h1 {
        font-size: 1.8em;
    }
    
    #instructions {
        padding: 15px;
        font-size: 14px;
    }
    
    #characters {
        gap: 15px;
    }
    
    .character-card img {
        width: 60px;
        height: 60px;
    }
    
    #score-timer {
        font-size: 14px;
        gap: 10px;
    }
    
    #volume-control {
        font-size: 12px;
        padding: 6px 10px;
    }
    
    #volume-slider {
        width: 70px;
    }
}