/* --- Reset Básico e Modelo de Caixa --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* --- Variáveis de Cor (Tema Escuro Neon) --- */
:root {
    --bg-gradient-start: #1a1a2e; /* Azul noite profundo */
    --bg-gradient-end: #16213e;   /* Azul escuro mais vibrante */
    --text-primary: #e0e0ff;     /* Texto principal: Lavanda claro */
    --text-secondary: #a0a0cc;   /* Texto secundário: Cinza azulado claro */
    --accent-green: #50fa7b;     /* Verde neon (Geek) */
    --accent-pink: #ff79c6;      /* Rosa neon (Code) */
    --accent-purple: #bd93f9;    /* Roxo claro (Links, Hover) */
    --accent-yellow: #f1fa8c;    /* Amarelo claro (Destaque de movimento) */
    --dark-gray-1: #44475a;      /* Cinza escuro (Quadrados escuros, Fundo de elementos) */
    --dark-gray-2: #6272a4;      /* Cinza médio (Quadrados claros, Bordas, Separadores) */
    --container-bg: rgba(40, 42, 54, 0.88); /* Fundo do container principal (Dracula BG com mais opacidade) */
    --shadow-color: rgba(189, 147, 249, 0.25); /* Sombra roxa suave (Accent Purple com alpha) */
    --highlight-bg: rgba(241, 250, 140, 0.6); /* Amarelo neon transparente (Accent Yellow com alpha) */
    --selected-bg: rgba(189, 147, 249, 0.5);  /* Roxo claro transparente (Accent Purple com alpha) */

    --board-size: 8;
    --board-max-width: 480px; /* Largura máxima do tabuleiro */
}

/* --- Estilos Globais e Body --- */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    color: var(--text-primary);
    line-height: 1.6;
    padding: 10px;
    overflow-x: hidden; /* Evita scroll horizontal acidental */
}

/* --- Container Principal e Conteúdo --- */
.main-content {
    flex: 1; /* Ocupa espaço vertical disponível */
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 0;
}

.game-container {
    background-color: var(--container-bg);
    border-radius: 12px;
    box-shadow: 0 8px 25px var(--shadow-color);
    padding: 20px 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 95%;
    max-width: 500px; /* Largura máxima do container do jogo */
    border: 1px solid var(--dark-gray-2);
}

/* --- Seção Superior (Título, Opções, Placar) --- */
.top-section {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 15px;
    gap: 12px;
}

h1 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-primary);
    margin: 0 0 5px 0;
    font-size: 2em;
    text-align: center;
    font-weight: 700;
    letter-spacing: 1px;
}

/* Estilos para as partes coloridas do título */
h1 .geek {
    color: var(--accent-green);
    text-shadow: 0 0 5px var(--accent-green);
}

h1 .code {
    color: var(--accent-pink);
    text-shadow: 0 0 5px var(--accent-pink);
}

.options-scores-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    gap: 15px 20px;
    font-size: 0.9em;
    border-top: 1px solid var(--dark-gray-2);
    border-bottom: 1px solid var(--dark-gray-2);
    padding: 10px 0;
}

#game-options {
    display: flex;
    align-items: center;
    gap: 8px;
}

#game-options label {
    color: var(--text-secondary);
    font-weight: 500;
}

#difficulty-select {
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--dark-gray-2);
    background-color: var(--dark-gray-1);
    color: var(--text-primary);
    font-size: 1em;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

#difficulty-select:hover,
#difficulty-select:focus {
    border-color: var(--accent-purple);
    background-color: var(--dark-gray-2);
    outline: none; /* Remove outline padrão no focus */
}

#difficulty-select:focus {
     box-shadow: 0 0 0 2px var(--accent-purple); /* Adiciona anel roxo no focus */
}


#score-board {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 25px;
    text-align: center;
}

.score-item strong {
    display: block;
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 2px;
    font-weight: 500;
}

.score-count {
    font-size: 1.6em;
    color: var(--text-primary);
    font-weight: bold;
    font-family: 'Orbitron', sans-serif;
    min-width: 2ch; /* Garante espaço para números de 2 dígitos */
    display: inline-block; /* Necessário para min-width */
    text-align: center;
}
/* Cores específicas para contagem */
#player-score { color: var(--accent-green); }
#machine-score { color: var(--accent-pink); }


#game-info {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.info-box {
    padding: 5px 10px;
    border-radius: 6px;
    background-color: var(--dark-gray-1);
    color: var(--text-secondary);
    text-align: center;
    font-size: 0.85em;
    border: 1px solid var(--dark-gray-2);
}

.info-box strong {
    color: var(--text-primary);
    font-weight: 600;
    margin-right: 5px;
}

/* Cores dos indicadores de jogador/máquina */
.player-color-indicator {
    color: var(--accent-green);
    font-weight: bold;
}
.machine-color-indicator {
    color: var(--accent-pink);
    font-weight: bold;
}

/* --- Tabuleiro (Canvas) --- */
.canvas-container {
    width: 100%;
    max-width: var(--board-max-width);
    margin: 0 auto;
}

canvas {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    border: 3px solid var(--dark-gray-2);
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3) inset; /* Sombra interna sutil */
    background-color: var(--dark-gray-1); /* Cor de fundo de fallback */
}

/* --- Rodapé --- */
footer {
    flex-shrink: 0;
    width: 100%;
    padding: 20px 10px;
    margin-top: 30px;
    text-align: center;
    font-size: 0.85em;
    color: var(--text-secondary);
    border-top: 1px solid var(--dark-gray-2);
}

.footer-links {
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px 15px;
}

footer a {
    color: var(--accent-purple);
    text-decoration: none;
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

footer a:hover {
    color: var(--accent-pink);
    text-shadow: 0 0 3px var(--accent-pink);
}

footer span { /* Separadores "|" */
    color: var(--dark-gray-2);
    margin: 0 5px;
    user-select: none; /* Evita seleção do separador */
}

/* Estilo específico para os links Geek Code no rodapé */
footer .geek {
    color: var(--accent-green);
    font-weight: bold;
}
footer .code {
    color: var(--accent-pink);
    font-weight: bold;
}
footer a:hover .geek {
    text-shadow: 0 0 5px var(--accent-green);
}
footer a:hover .code {
    text-shadow: 0 0 5px var(--accent-pink);
}

.copyright {
    font-size: 0.8em;
}
.copyright .geek, .copyright .code {
    font-weight: normal; /* Copyright não precisa ser negrito */
}


/* --- Responsividade --- */

/* Telas Médias (Tablets pequenos, celulares grandes) */
@media (max-width: 600px) {
    h1 {
        font-size: 1.8em;
    }
    .game-container {
        padding: 15px 20px;
        max-width: 95%;
    }
    .options-scores-info {
        gap: 10px 15px;
        font-size: 0.85em;
        padding: 8px 0;
    }
    .score-count {
        font-size: 1.4em;
    }
    footer {
        font-size: 0.8em;
        padding: 15px 10px;
    }
    .footer-links {
        gap: 5px 10px;
    }
}

/* Telas Pequenas (Celulares) */
@media (max-width: 420px) {
    body {
        padding: 5px;
    }
     .main-content {
        padding: 10px 0;
    }
    h1 {
        font-size: 1.5em;
    }
    .game-container {
        padding: 10px 15px;
    }
    .top-section {
        gap: 10px;
        margin-bottom: 10px;
    }
    .options-scores-info {
        /* Empilha os itens e centraliza */
        flex-direction: column;
        align-items: center; /* Alinha itens ao centro quando em coluna */
        gap: 12px;
        font-size: 0.8em;
        text-align: center;
    }
    /* Garante que itens empilhados mantenham layout razoável */
    #game-options, #score-board, #game-info {
        justify-content: center;
        width: auto; /* Não força 100% para não parecer estranho */
    }
     #game-info {
        gap: 10px; /* Reduz gap entre info boxes */
    }
    .score-count {
        font-size: 1.3em;
    }
    #difficulty-select {
        padding: 5px 8px;
    }
    footer {
        font-size: 0.75em;
        margin-top: 20px;
    }
     .footer-links {
        gap: 5px 8px;
    }
     footer span {
        margin: 0 3px;
    }
}