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

body {
    font-family: 'Impact', 'Arial Black', Arial, sans-serif;
    color: #fff;
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    position: relative;
    padding: 32px 24px;
}

@keyframes pulseGlow {
    0% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.05); }
    100% { opacity: 0.4; transform: scale(1); }
}

@keyframes heatWave {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(-10px) scale(1.02); }
}

#gameCanvas {
    display: block;
    background: linear-gradient(to bottom, #87CEEB 0%, #98FB98 100%);
    border-bottom: 3px solid #8B4513;
    max-width: 100%;
    height: auto;
}

.game-container {
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    border: 3px solid rgba(0, 0, 0, 0.35);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
    overflow: hidden;
    z-index: 1;
    width: min(1280px, 100%);
    padding: 32px 32px 24px;
}

.game-container::before {
    content: '';
    position: absolute;
    inset: 12px;
    border-radius: 18px;
    pointer-events: none;
}

.game-container > canvas {
    display: block;
    width: 100%;
    height: auto;
}

.game-ui {
    position: absolute;
    top: 20px;
    left: 20px;
    color: #333;
    font-weight: bold;
    font-size: 20px;
}

.score {
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.8);
}

.audio-controls {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}


.audio-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #333;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.8);
}

.audio-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.audio-btn.disabled {
    background: rgba(255, 0, 0, 0.2);
    border-color: rgba(255, 0, 0, 0.3);
    color: #666;
}

.instructions {
    position: absolute;
    top: 20px;
    right: 20px;
    text-align: right;
    color: #666;
    font-size: 18px;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.9);
    min-width: 250px;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.instructions p {
    margin-bottom: 5px;
}

.game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 24px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 10;
    width: min(640px, 92vw);
}

.game-over h2 {
    color: #e74c3c;
    margin-bottom: 15px;
    font-size: 28px;
}

.game-over p {
    margin-bottom: 20px;
    font-size: 18px;
    color: #333;
}

.game-over-characters {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 16px;
}

.game-over-character {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 16px;
    font-weight: bold;
    color: #222;
    padding: 8px;
    border-radius: 16px;
    border: 2px solid transparent;
    background: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    transition: all 0.2s ease;
}

.game-over-character img {
    width: 96px;
    height: 96px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid #333;
    background: #fff;
}

.game-over-character span {
    letter-spacing: 0.3px;
}

.game-over-character-hint {
    font-size: 12px;
    color: #555;
    margin: 0;
}

.game-over-character.active {
    border-color: #ffd700;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

.game-over-note {
    font-size: 16px;
    color: #333;
    margin-bottom: 8px;
}

.game-over.waiting .game-over-character {
    opacity: 0.5;
    pointer-events: none;
    filter: grayscale(0.8);
}

.game-over.waiting .game-over-note::after {
    content: 'Loading background...';
    display: block;
    font-size: 12px;
    color: #777;
    margin-top: 6px;
}

.hidden {
    display: none;
}

.ground-text {
    background: #8B4513;
    color: white;
    text-align: center;
    padding: 20px;
    border-top: 3px solid #A0522D;
}

.ground-text h1 {
    font-size: 24px;
    margin: 0 0 10px 0;
    font-weight: bold;
}

.ground-text p {
    font-size: 16px;
    margin: 0;
    font-weight: bold;
    font-family: monospace;
}

.mobile-controls {
    display: none;
    position: absolute;
    left: 0;
    bottom: 24px;
    width: 100%;
    padding: 0 20px;
    flex-direction: column;
    gap: 12px;
    z-index: 5;
    pointer-events: none;
}

body.mobile-controls-visible .mobile-controls {
    display: flex;
    pointer-events: auto;
}

.mobile-action-row {
    display: flex;
    width: 100%;
    gap: 12px;
}

.mobile-controls .mobile-btn {
    pointer-events: auto;
    flex: 1;
    min-height: 58px;
    border-radius: 14px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    background: rgba(0, 0, 0, 0.45);
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.35);
    transition: transform 0.1s ease, background 0.2s ease;
}

.mobile-controls .mobile-btn:active {
    transform: scale(0.97);
    background: rgba(255, 255, 255, 0.15);
}

.mobile-controls .mobile-btn-left {
    margin-right: 6px;
}

.mobile-controls .mobile-btn-right {
    margin-left: 6px;
}

.mobile-controls .mobile-duck-btn {
    width: 100%;
    margin: 0;
    min-height: 56px;
}

/* Mobile responsive design */
@media (max-width: 768px) {
    body {
        padding: 5px;
    }
    
    .game-container {
        width: 100%;
        max-width: 100vw;
        border-radius: 0;
        padding: 0;
        background: transparent;
        box-shadow: none;
        border: none;
    }
    
    #gameCanvas {
        width: 100%;
        height: 70vh;
        min-height: 320px;
        border: none;
        border-bottom: none;
    }
    
    .game-ui {
        top: 10px;
        left: 10px;
        right: 10px;
    }
    
    .score {
        font-size: 16px;
    }
    
    .audio-controls {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .audio-btn {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    .ground-text {
        display: none;
    }
    
    .game-over {
        padding: 20px;
        margin: 10px;
        max-width: calc(100vw - 20px);
        width: calc(100vw - 20px);
        padding: 24px;
    }

    .game-over-characters {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
    }

    .game-over-character {
        padding: 14px;
        border-radius: 14px;
    }

    .game-over-character img {
        width: 80px;
        height: 80px;
    }

    .mobile-controls {
        position: static;
        bottom: auto;
        margin-top: 12px;
        padding: 0 10px;
        pointer-events: auto;
    }

}

@media (max-width: 480px) {
    #gameCanvas {
        height: 40vh;
        min-height: 250px;
    }
    
    .score {
        font-size: 14px;
    }
    
    .audio-btn {
        padding: 4px 8px;
        font-size: 11px;
    }
    
    .ground-text h1 {
        font-size: 16px;
    }
    
    .ground-text p {
        font-size: 11px;
    }
}

/* Desktop responsive design */
@media (min-width: 769px) and (max-width: 1300px) {
    #gameCanvas {
        width: 100vw;
        height: 60vh;
    }
    
    .game-container {
        width: 100vw;
        height: 60vh;
    }
}

.game-container:fullscreen,
.game-container:-webkit-full-screen,
.game-container:-moz-full-screen,
.game-container:-ms-fullscreen {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
    border: none;
    padding: 0;
    box-shadow: none;
    background: #050505;
}

.game-container:fullscreen canvas,
.game-container:-webkit-full-screen canvas,
.game-container:-moz-full-screen canvas,
.game-container:-ms-fullscreen canvas {
    height: 100%;

}

.game-container:fullscreen canvas,
.game-container:-webkit-full-screen canvas,
.game-container:-moz-full-screen canvas,
.game-container:-ms-fullscreen canvas {
    border: none;
    border-bottom: none;
}

.game-container:fullscreen .game-ui,
.game-container:fullscreen .ground-text,
.game-container:fullscreen .audio-controls,
.game-container:fullscreen .character-picker,
.game-container:-webkit-full-screen .game-ui,
.game-container:-webkit-full-screen .ground-text,
.game-container:-webkit-full-screen .audio-controls,
.game-container:-webkit-full-screen .character-picker,
.game-container:-moz-full-screen .game-ui,
.game-container:-moz-full-screen .ground-text,
.game-container:-moz-full-screen .audio-controls,
.game-container:-moz-full-screen .character-picker,
.game-container:-ms-fullscreen .game-ui,
.game-container:-ms-fullscreen .ground-text,
.game-container:-ms-fullscreen .audio-controls,
.game-container:-ms-fullscreen .character-picker {
    display: none;
}

.game-container:fullscreen .mobile-controls,
.game-container:-webkit-full-screen .mobile-controls,
.game-container:-moz-full-screen .mobile-controls,
.game-container:-ms-fullscreen .mobile-controls {
    display: none;
    visibility: hidden;
}