/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #87CEEB 0%, #87CEFA 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.game-container {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 800px;
    max-height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Canvas Styling */
#gameCanvas {
    border: 2px solid #4682B4;
    border-radius: 10px;
    background: linear-gradient(180deg, #87CEEB 0%, #98FB98 100%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    max-width: 100%;
    max-height: 100%;
}

/* UI Overlay */
.ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ui-overlay > * {
    pointer-events: auto;
}

/* Score Display */
.score-display {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 10px 20px;
    border-radius: 25px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

#scoreText {
    font-size: 18px;
    font-weight: bold;
    color: #2C3E50;
}

/* Game Screens */
.start-screen, .game-over-screen {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    max-width: 350px;
    width: 90%;
}

.start-screen h1 {
    color: #E74C3C;
    font-size: 36px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.game-over-screen h2 {
    color: #E74C3C;
    font-size: 28px;
    margin-bottom: 20px;
}

.start-screen p, .game-over-screen p {
    color: #2C3E50;
    font-size: 16px;
    margin-bottom: 15px;
}

.controls {
    margin: 20px 0;
    line-height: 1.6;
}

.desktop-controls, .mobile-controls {
    display: block;
    font-size: 14px;
    color: #7F8C8D;
}

/* Buttons */
button {
    background: linear-gradient(45deg, #3498DB, #2980B9);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.4);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.6);
}

button:active {
    transform: translateY(0);
}

/* High Score Indicator */
.high-score-indicator {
    color: #F39C12;
    font-size: 18px;
    font-weight: bold;
    margin: 10px 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: celebration 2s ease-in-out infinite;
    background: linear-gradient(45deg, #FFD700, #FFA500, #FF6347, #FFD700);
    background-size: 400% 400%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

@keyframes celebration {
    0% { 
        transform: scale(1) rotate(0deg); 
        background-position: 0% 50%;
    }
    25% { 
        transform: scale(1.1) rotate(1deg); 
        background-position: 100% 50%;
    }
    50% { 
        transform: scale(1.05) rotate(0deg); 
        background-position: 100% 50%;
    }
    75% { 
        transform: scale(1.1) rotate(-1deg); 
        background-position: 0% 50%;
    }
    100% { 
        transform: scale(1) rotate(0deg); 
        background-position: 0% 50%;
    }
}

@keyframes pulse {
    from { transform: scale(1); opacity: 0.8; }
    to { transform: scale(1.05); opacity: 1; }
}

/* Hidden Elements */
.game-over-screen, .start-screen {
    display: none;
}

.game-over-screen.show, .start-screen.show {
    display: block;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .game-container {
        width: 100vw;
        height: 100vh;
    }
    
    #gameCanvas {
        width: 100vw;
        height: 100vh;
        border: none;
        border-radius: 0;
    }
    
    .start-screen, .game-over-screen {
        padding: 30px 20px;
        max-width: 280px;
    }
    
    .start-screen h1 {
        font-size: 28px;
    }
    
    .score-display {
        top: 10px;
        left: 10px;
        padding: 8px 16px;
    }
    
    #scoreText {
        font-size: 16px;
    }
    
    .desktop-controls {
        display: none;
    }
}

@media (max-width: 480px) {
    .start-screen, .game-over-screen {
        padding: 20px 15px;
        max-width: 260px;
    }
    
    .start-screen h1 {
        font-size: 24px;
    }
    
    .start-screen p, .game-over-screen p {
        font-size: 14px;
    }
    
    button {
        padding: 12px 24px;
        font-size: 16px;
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .start-screen, .game-over-screen {
        padding: 15px;
        max-width: 240px;
    }
    
    .start-screen h1 {
        font-size: 20px;
        margin-bottom: 10px;
    }
    
    .start-screen p, .game-over-screen p {
        font-size: 12px;
        margin-bottom: 8px;
    }
    
    .controls {
        margin: 10px 0;
    }
    
    button {
        padding: 8px 16px;
        font-size: 14px;
    }
}