/**
 * Estilos personalizados para o aplicativo de ensino de inglês
 * Foco em design responsivo para dispositivos móveis
 */

/* Variáveis CSS */
:root {
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #4cc9f0;
    --accent-color: #f72585;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --border-radius: 0.5rem;
    --box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

/* Estilos gerais */
body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark-color);
    background-color: #f5f7fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Personalização do Bootstrap */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 600;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-accent {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.btn-accent:hover {
    filter: brightness(90%);
    color: white;
}

/* Cards */
.card {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: none;
    margin-bottom: 1.5rem;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    background-color: rgba(0, 0, 0, 0.03);
    font-weight: 600;
}

/* Módulos e lições */
.module-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.module-card .card-body {
    flex: 1;
}

.module-progress {
    height: 10px;
    border-radius: 5px;
    margin-top: 10px;
}

.lesson-item {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    background-color: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.lesson-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.lesson-item.completed {
    border-left: 4px solid var(--success-color);
}

.lesson-item.in-progress {
    border-left: 4px solid var(--warning-color);
}

.lesson-item.locked {
    opacity: 0.7;
    border-left: 4px solid var(--gray-color);
}

/* Vocabulário */
.vocabulary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.vocabulary-item:last-child {
    border-bottom: none;
}

.vocabulary-english {
    font-weight: 600;
    color: var(--primary-color);
}

.vocabulary-portuguese {
    font-style: italic;
    color: var(--gray-color);
}

.vocabulary-audio {
    cursor: pointer;
    color: var(--primary-color);
}

/* Diálogos */
.dialogue-container {
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.dialogue-line {
    margin-bottom: 1rem;
    display: flex;
}

.dialogue-speaker {
    font-weight: 600;
    margin-right: 0.5rem;
    min-width: 80px;
}

.dialogue-text {
    flex: 1;
}

.dialogue-translation {
    margin-top: 0.5rem;
    font-style: italic;
    color: var(--gray-color);
}

/* Exercícios */
.exercise-container {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--box-shadow);
}

.exercise-question {
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.exercise-options {
    margin-bottom: 1.5rem;
}

.exercise-option {
    padding: 0.75rem 1rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.exercise-option:hover {
    background-color: rgba(67, 97, 238, 0.05);
}

.exercise-option.selected {
    background-color: rgba(67, 97, 238, 0.1);
    border-color: var(--primary-color);
}

.exercise-option.correct {
    background-color: rgba(76, 175, 80, 0.1);
    border-color: var(--success-color);
}

.exercise-option.incorrect {
    background-color: rgba(244, 67, 54, 0.1);
    border-color: var(--danger-color);
}

.exercise-feedback {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

.exercise-feedback.correct {
    background-color: rgba(76, 175, 80, 0.1);
    border-left: 4px solid var(--success-color);
}

.exercise-feedback.incorrect {
    background-color: rgba(244, 67, 54, 0.1);
    border-left: 4px solid var(--danger-color);
}

/* Perfil e progresso */
.profile-header {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--box-shadow);
    text-align: center;
}

.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-bottom: 1rem;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.profile-level {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

.progress-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 1.5rem;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-color);
}

/* Responsividade para dispositivos móveis */
@media (max-width: 767.98px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .dialogue-line {
        flex-direction: column;
    }
    
    .dialogue-speaker {
        margin-bottom: 0.25rem;
    }
    
    .profile-header {
        padding: 1.5rem;
    }
    
    .progress-stats {
        flex-wrap: wrap;
    }
    
    .stat-item {
        width: 50%;
        margin-bottom: 1rem;
    }
}

/* Animações */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Botão flutuante para dispositivos móveis */
.mobile-action-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    transition: var(--transition);
}

.mobile-action-button:hover, .mobile-action-button:focus {
    background-color: var(--primary-dark);
    transform: scale(1.05);
    color: white;
}

/* Modo escuro (preparação) */
.dark-mode {
    --primary-color: #7289da;
    --primary-dark: #5e78d5;
    --light-color: #2c2f33;
    --dark-color: #e9e9e9;
    background-color: #23272a;
    color: #e9e9e9;
}

.dark-mode .card,
.dark-mode .lesson-item,
.dark-mode .profile-header,
.dark-mode .exercise-container {
    background-color: #2c2f33;
    color: #e9e9e9;
}

.dark-mode .dialogue-container {
    background-color: #36393f;
}

.dark-mode .navbar {
    background-color: #1e2124 !important;
}

.dark-mode .footer {
    background-color: #1e2124 !important;
}