/* Reset e configurações gerais */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --gray-color: #95a5a6;
    --navbar-height: 70px;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

body {
    background-color: #f8fafc;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container principal */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background-color: white;
    box-shadow: var(--box-shadow);
    height: var(--navbar-height);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #eaeaea;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
}

.logo span {
    color: var(--secondary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 15px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a:hover {
    background-color: var(--light-color);
    color: var(--secondary-color);
}

.nav-links a.active {
    background-color: var(--secondary-color);
    color: white;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-name {
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-school {
    background-color: var(--light-color);
    color: var(--dark-color);
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid #ddd;
}

/* Conteúdo principal */
.main-content {
    padding: 30px 0;
    flex-grow: 1;
}

.page-title {
    margin-bottom: 30px;
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 600;
}

/* Grid de módulos */
.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.module-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid #eaeaea;
}

.module-card:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.module-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), #34495e);
    color: white;
    display: flex;
    align-items: center;
    gap: 15px;
}

.module-icon {
    font-size: 1.5rem;
    background-color: rgba(255, 255, 255, 0.15);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.module-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
}

.module-content {
    padding: 20px;
}

.module-items {
    list-style: none;
}

.module-item {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

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

.module-item:hover {
    background-color: #f8f9fa;
    padding-left: 10px;
    border-radius: 4px;
}

.item-icon {
    color: var(--secondary-color);
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.module-item a {
    text-decoration: none;
    color: var(--dark-color);
    transition: var(--transition);
    flex-grow: 1;
    font-weight: 500;
}

.module-item a:hover {
    color: var(--secondary-color);
}

/* Overlay de carregamento */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--light-color);
    border-top-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* Responsividade */
@media (max-width: 992px) {
    .modules-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .navbar-content {
        flex-wrap: wrap;
        padding: 10px;
        height: auto;
    }
    
    .logo {
        width: 100%;
        justify-content: center;
        margin-bottom: 10px;
    }
    
    .nav-links {
        justify-content: center;
        flex-wrap: wrap;
        width: 100%;
        margin-bottom: 10px;
    }
    
    .user-info {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .modules-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .module-header {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .module-icon {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }
    
    .nav-links a {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}