/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, hsl(220, 15%, 8%), hsl(220, 15%, 6%));
    color: hsl(210, 40%, 98%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 24px;
    max-width: 600px;
    width: 100%;
}

/* Header */
.game-header {
    text-align: center;
}

.game-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 8px;
    text-shadow: 
        0 0 10px hsl(120, 100%, 50%), 
        0 0 20px hsl(120, 100%, 50%), 
        0 0 30px hsl(120, 100%, 50%);
}

.game-subtitle {
    color: hsl(210, 20%, 70%);
    font-size: 0.9rem;
}

/* Game Info */
.game-info {
    display: flex;
    gap: 24px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.score-card {
    background: linear-gradient(135deg, hsl(220, 15%, 12%, 0.1), hsl(220, 15%, 12%, 0.05));
    backdrop-filter: blur(10px);
    border: 1px solid hsl(220, 15%, 20%, 0.3);
    border-radius: 12px;
    padding: 16px 24px;
    text-align: center;
}

.score-value {
    font-size: 2rem;
    font-weight: bold;
    color: hsl(120, 100%, 50%);
}

.score-label {
    font-size: 0.875rem;
    color: hsl(210, 20%, 70%);
}

.game-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Botões */
.btn {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.875rem;
}

.btn-primary {
    background: hsl(120, 100%, 50%);
    color: hsl(220, 15%, 8%);
}

.btn-primary:hover {
    background: hsl(120, 100%, 45%);
    transform: translateY(-1px);
}

.btn-secondary {
    background: hsl(220, 15%, 20%);
    color: hsl(210, 40%, 98%);
}

.btn-secondary:hover {
    background: hsl(220, 15%, 25%);
}

.btn-outline {
    background: transparent;
    color: hsl(210, 40%, 98%);
    border: 1px solid hsl(220, 15%, 20%);
}

.btn-outline:hover {
    background: hsl(220, 15%, 20%);
}

/* Tabuleiro do jogo */
.game-board-container {
    position: relative;
}

#gameCanvas {
    background: linear-gradient(135deg, hsl(220, 15%, 12%), hsl(220, 15%, 8%));
    border: 2px solid hsl(220, 15%, 20%);
    border-radius: 12px;
    box-shadow: 0 10px 40px -10px hsl(220, 15%, 2%, 0.8);
}

/* Telas de estado */
.game-over-screen, .start-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: hsl(220, 15%, 8%, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.game-over-card, .start-card {
    background: hsl(220, 15%, 12%);
    border: 1px solid hsl(220, 15%, 20%);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.game-over-title, .start-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 16px;
}

.game-over-title {
    color: hsl(0, 84%, 60%);
}

.game-over-score, .start-subtitle {
    color: hsl(210, 20%, 70%);
    margin-bottom: 24px;
}

/* Animações */
@keyframes pulse-glow {
    0% { 
        box-shadow: 0 0 20px hsl(120, 100%, 50%, 0.5); 
    }
    100% { 
        box-shadow: 0 0 30px hsl(120, 100%, 50%, 0.8), 0 0 40px hsl(120, 100%, 50%, 0.4); 
    }
}

@keyframes food-pulse {
    0% { 
        transform: scale(1);
    }
    100% { 
        transform: scale(1.1);
    }
}

.game-over-flash {
    animation: game-over-flash 0.5s ease-in-out;
}

@keyframes game-over-flash {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Responsividade */
@media (max-width: 480px) {
    .game-container {
        padding: 16px;
        gap: 16px;
    }
    
    .game-title {
        font-size: 2rem;
    }
    
    #gameCanvas {
        width: 320px;
        height: 320px;
    }
    
    .game-info {
        flex-direction: column;
        gap: 16px;
    }
    
    .game-controls {
        justify-content: center;
    }
}