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

:root {
    --primary-dark: #05386B;
    --primary-medium: #379683;
    --primary-light: #5CDB95;
    --accent-light: #8EE4AF;
    --background-light: #EDF5E1;
    
    --font-cyber: 'Courier New', monospace;
    --shadow-neon: 0 0 10px var(--primary-light);
    --shadow-neon-strong: 0 0 20px var(--primary-light), 0 0 30px var(--primary-light);
    --border-cyber: 2px solid var(--primary-light);
}

/* Corpo e layout principal */
body {
    font-family: var(--font-cyber);
    background: linear-gradient(135deg, var(--primary-dark) 0%, #000 100%);
    color: var(--background-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Cabeçalho do jogo */
.game-header {
    padding: 1rem 2rem;
    background: rgba(5, 56, 107, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: var(--border-cyber);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.game-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: bold;
    text-shadow: var(--shadow-neon);
    letter-spacing: 3px;
    color: var(--primary-light);
}

.game-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 60px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--accent-light);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-light);
    text-shadow: var(--shadow-neon);
}

/* Container principal do jogo */
.game-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    gap: 1.5rem;
}

.canvas-wrapper {
    position: relative;
    border: var(--border-cyber);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-neon-strong);
    background: rgba(0, 0, 0, 0.5);
}

#gameCanvas {
    display: block;
    background: linear-gradient(45deg, rgba(5, 56, 107, 0.1), rgba(55, 150, 131, 0.1));
    max-width: 100%;
    height: auto;
}

/* Overlay do jogo */
.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 56, 107, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    transition: opacity 0.3s ease;
}

.game-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay-content {
    text-align: center;
    padding: 2rem;
    border: var(--border-cyber);
    border-radius: 15px;
    background: rgba(0, 0, 0, 0.7);
    box-shadow: var(--shadow-neon-strong);
    max-width: 90%;
}

.overlay-title {
    font-size: clamp(1.8rem, 5vw, 3rem);
    margin-bottom: 1rem;
    color: var(--primary-light);
    text-shadow: var(--shadow-neon);
    letter-spacing: 2px;
}

.overlay-message {
    font-size: clamp(1rem, 3vw, 1.2rem);
    margin-bottom: 2rem;
    color: var(--accent-light);
    line-height: 1.5;
}

.overlay-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Botões do jogo */
.game-btn {
    padding: 0.8rem 2rem;
    font-family: var(--font-cyber);
    font-size: 1rem;
    font-weight: bold;
    border: var(--border-cyber);
    border-radius: 8px;
    background: transparent;
    color: var(--primary-light);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    min-width: 120px;
}

.game-btn:hover,
.game-btn:focus {
    background: var(--primary-light);
    color: var(--primary-dark);
    box-shadow: var(--shadow-neon);
    transform: translateY(-2px);
}

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

.game-btn.primary {
    background: var(--primary-medium);
    color: var(--background-light);
}

.game-btn.primary:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.game-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Informações de controles */
.controls-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    width: 100%;
    max-width: 800px;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: rgba(55, 150, 131, 0.1);
    border: 1px solid var(--primary-medium);
    border-radius: 5px;
    font-size: 0.9rem;
    color: var(--accent-light);
}

kbd {
    padding: 0.2rem 0.5rem;
    background: var(--primary-dark);
    border: 1px solid var(--primary-light);
    border-radius: 3px;
    font-size: 0.8rem;
    color: var(--primary-light);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Legenda de power-ups */
.power-ups-legend {
    width: 100%;
    max-width: 800px;
    background: rgba(55, 150, 131, 0.1);
    border: 1px solid var(--primary-medium);
    border-radius: 10px;
    padding: 1rem;
}

.power-ups-legend h3 {
    color: var(--primary-light);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.2rem;
}

.power-up-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--accent-light);
}

.power-up-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: bold;
    font-size: 1rem;
}

.power-up-icon.expand {
    background: rgba(92, 219, 149, 0.3);
    color: var(--primary-light);
}

.power-up-icon.multi {
    background: rgba(142, 228, 175, 0.3);
    color: var(--accent-light);
}

.power-up-icon.speed {
    background: rgba(237, 245, 225, 0.3);
    color: var(--background-light);
}

.power-up-icon.life {
    background: rgba(255, 100, 100, 0.3);
    color: #ff6464;
}

/* Rodapé */
.game-footer {
    text-align: center;
    padding: 1rem;
    background: rgba(5, 56, 107, 0.8);
    border-top: var(--border-cyber);
    font-size: 0.9rem;
    color: var(--accent-light);
}

.game-footer a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.game-footer a:hover {
    color: var(--background-light);
    text-shadow: var(--shadow-neon);
}

/* Responsividade */
@media (max-width: 768px) {
    .game-header {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .game-stats {
        justify-content: center;
        gap: 1rem;
    }
    
    .game-container {
        padding: 1rem;
        gap: 1rem;
    }
    
    .canvas-wrapper {
        width: 100%;
        max-width: 100vw;
    }
    
    #gameCanvas {
        width: 100%;
        height: auto;
    }
    
    .controls-info {
        grid-template-columns: 1fr;
    }
    
    .overlay-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .game-btn {
        width: 100%;
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .game-title {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }
    
    .stat-value {
        font-size: 1.2rem;
    }
    
    .overlay-content {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .power-ups-legend {
        padding: 0.8rem;
    }
    
    .power-up-item {
        font-size: 0.8rem;
    }
}

/* Animações */
@keyframes neon-pulse {
    0%, 100% {
        text-shadow: var(--shadow-neon);
    }
    50% {
        text-shadow: var(--shadow-neon-strong);
    }
}

.game-title {
    animation: neon-pulse 2s ease-in-out infinite;
}

/* Acessibilidade */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles para acessibilidade */
button:focus,
canvas:focus {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-light: #00ff00;
        --background-light: #ffffff;
        --primary-dark: #000000;
    }
}