@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&family=Quicksand:wght@300;400;500;700&display=swap');

:root {
    --primary-color: #00bcd4; /* Ciano Moderno */
    --secondary-color: #ff9800; /* Laranja Vívido (Destaque) */
    --background-color: #1a1a1a; /* Fundo Ultra Escuro */
    --card-background: #2c2c2c;
    --text-color: #e0e0e0; 
    --text-light: #bdbdbd;
    --correct-color: #4CAF50; 
    --wrong-color: #F44336; 
}

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

/* ---------------------------------- */
/* NOVO: AJUSTE PARA IMAGENS DOS ÍCONES (.icon) */
/* ---------------------------------- */
.icon {
    height: 24px; /* Tamanho padrão de ícone */
    width: 24px;
    object-fit: contain; /* Garante que a imagem cabe sem cortar */
    /* Se os seus ícones forem escuros, você pode usar: 
       filter: invert(1);
       para torná-los brancos. */
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    /* Essencial para evitar scroll no body */
    height: 100vh; 
    min-height: 100vh;
    padding: 20px;
    background-image: linear-gradient(135deg, #101010 0%, #222 100%);
    overflow: hidden; 
}

.container {
    background: var(--card-background);
    border-radius: 20px;
    /* 🔑 RESTAURADO: Sombra original do container */
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.7), 0 0 50px rgba(0, 188, 212, 0.15);
    padding: 30px 40px;
    width: 100%;
    max-width: 800px;
    text-align: center;
    position: relative;
    /* 🔑 RESTAURADO: Borda original do container */
    border: 1px solid rgba(255, 255, 255, 0.1); 
    max-height: calc(100vh - 40px); 
    overflow-y: auto; 
}

/* Redução do tamanho das fontes principais */
h1 {
    font-size: 2.5rem; /* Mantido em 2.5rem */
    color: var(--primary-color);
    margin-bottom: 25px;
    text-shadow: 0 0 10px rgba(0, 188, 212, 0.5);
    font-weight: 700;
}

/* Redução do tamanho do subtítulo */
h2 {
    font-size: 1.8rem; /* Mantido em 1.8rem */
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-family: 'Quicksand', sans-serif;
}

/* ---------------------------------- */
/* Telas do Jogo */
/* ---------------------------------- */
.screen {
    display: none;
    /* 🔑 RESTAURADO: Animação fadeIn original */
    animation: fadeIn 0.8s ease-in-out;
    max-height: calc(100vh - 100px); 
    overflow-y: auto;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------------------------------- */
/* Botões Comuns (Ajuste para garantir alinhamento vertical do texto e da imagem) */
/* ---------------------------------- */
.main-btn, .option-btn, .control-btn {
    /* 🔑 RESTAURADO: Background original dos botões */
    background: linear-gradient(45deg, var(--secondary-color), #ffc107);
    color: #1a1a1a; 
    border: none;
    padding: 12px 25px; /* Mantido ajustado */
    margin: 8px 4px; /* Mantido ajustado */
    border-radius: 10px;
    cursor: pointer;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem; /* Mantido ajustado */
    font-weight: 700;
    transition: all 0.3s ease;
    /* 🔑 RESTAURADO: Sombra original dos botões */
    box-shadow: 0 5px 15px rgba(255, 152, 0, 0.3);
    /* 🔑 ESSENCIAL PARA O ALINHAMENTO DA IMAGEM E TEXTO: */
    display: inline-flex;
    align-items: center; /* Alinha a imagem e o texto verticalmente */
    justify-content: center;
    gap: 10px;
}

/* 🔑 RESTAURADO: Hover e Transform original dos botões */
.main-btn:hover, .option-btn:hover, .control-btn:hover {
    background: linear-gradient(45deg, #ffc107, var(--secondary-color));
    transform: translateY(-5px); /* Restaurado para -5px */
    box-shadow: 0 10px 20px rgba(255, 152, 0, 0.5);
}

.main-btn:disabled {
    background: #555;
    color: #bbb;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ---------------------------------- */
/* Tela de Seleção de Matéria */
/* ---------------------------------- */
.materia-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); 
    gap: 15px; 
    margin-bottom: 20px; 
}

.materia-btn {
    /* 🔑 RESTAURADO: Background, cor e borda original dos botões de matéria */
    background: var(--card-background);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 15px 10px; 
    box-shadow: 0 0 10px rgba(0, 188, 212, 0.2);
    font-size: 0.9rem; 
}

.materia-btn:hover {
    /* 🔑 RESTAURADO: Hover e Transform original dos botões de matéria */
    background: var(--primary-color);
    color: var(--card-background);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 188, 212, 0.5);
}

.control-group {
    gap: 15px;
    margin-top: 20px;
    padding-top: 15px;
}

.music-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.volume-slider {
    width: 120px;
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: #555;
    border-radius: 4px;
    outline: none;
    transition: background 0.2s;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 5px var(--primary-color);
}

/* ---------------------------------- */
/* Tela do Quiz */
/* ---------------------------------- */
.quiz-area {
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

#current-materia {
    text-align: center;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    color: var(--secondary-color);
    font-size: 1.5rem; 
}

.question-number {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 5px;
    text-align: center;
    font-weight: 700;
}

/* Redução do tamanho da pergunta */
#question-text {
    font-size: 1.4rem; 
    font-weight: 400;
    margin-bottom: 20px; 
    line-height: 1.5;
    color: var(--text-color);
    text-align: center;
    background: rgba(0, 0, 0, 0.1);
    padding: 10px;
    border-radius: 10px;
    max-height: 18vh; 
    overflow-y: auto; 
}

.options-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px; 
    margin-bottom: 20px; 
}

.option-btn {
    width: 100%;
    /* 🔑 RESTAURADO: Background, cor e borda original das opções */
    background: #3a3a3a;
    color: var(--text-color);
    padding: 10px 15px; 
    border: 1px solid #555;
    font-size: 0.9rem; 
    font-weight: 400;
    box-shadow: none;
}

.option-btn:hover {
    /* 🔑 RESTAURADO: Hover das opções */
    background: #4a4a4a;
    transform: translateY(-2px);
}

.option-btn.selected {
    border: 2px solid var(--secondary-color);
    box-shadow: 0 0 10px var(--secondary-color);
    background: #4a4a4a;
}

.option-btn.correct {
    background-color: var(--correct-color);
    color: white;
    box-shadow: 0 0 15px var(--correct-color);
    border: 2px solid var(--correct-color);
}

.option-btn.wrong {
    background-color: var(--wrong-color);
    color: white;
    box-shadow: 0 0 15px var(--wrong-color);
    border: 2px solid var(--wrong-color);
}

/* Container para os botões do Quiz (Próxima + Voltar) */
.quiz-controls-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    padding-top: 5px;
}

.secondary-action-btn {
    /* 🔑 RESTAURADO: Background e cor original do botão secundário */
    background: #555 !important;
    color: var(--text-color) !important;
    box-shadow: none !important;
    border: 1px solid var(--text-light);
    font-size: 0.9rem; 
}

.secondary-action-btn:hover {
    background: #666 !important;
    transform: translateY(-2px);
}

/* ---------------------------------- */
/* Tela de Perfil do Admin (Ajuste de fonte) */
/* ---------------------------------- */
#admin-profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
}

.profile-picture {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 188, 212, 0.5);
    margin-bottom: 10px;
}

.profile-info p {
    font-size: 1rem; 
    margin: 8px 0;
    color: var(--text-light);
}

.profile-info strong {
    color: var(--secondary-color);
}

.profile-info a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
    overflow-wrap: break-word; 
    word-wrap: break-word;     
    word-break: break-word;   
}

.profile-info a:hover {
    color: #4CAF50;
    text-decoration: underline;
}

/* ---------------------------------- */
/* Responsividade */
/* ---------------------------------- */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    h1 {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 1.6rem;
    }
    .options-container {
        grid-template-columns: 1fr;
    }
    .materia-options {
        grid-template-columns: 1fr 1fr;
    }
    #question-text {
        font-size: 1.2rem;
        max-height: 14vh;
    }
    .main-btn, .materia-btn, .option-btn, .control-btn, .secondary-action-btn {
        font-size: 0.85rem; 
        padding: 10px 15px;
    }
    .quiz-controls-bottom {
        flex-direction: column;
        gap: 8px;
    }
    #next-question-btn, #back-to-materia-from-quiz-btn {
        width: 100%;
    }
    /* AJUSTE RESPONSIVO PARA OS ÍCONES */
    .icon {
        height: 20px;
        width: 20px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    h2 {
        font-size: 1.4rem;
    }
    .materia-options {
        grid-template-columns: 1fr;
    }
    .control-group {
        flex-direction: column;
    }
}