/* Variáveis CSS para paleta sóbria */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --light-accent: #5dade2;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e9ecef;
    --shadow-light: 0 2px 10px rgba(44, 62, 80, 0.1);
    --shadow-medium: 0 4px 20px rgba(44, 62, 80, 0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Roboto', sans-serif;
    background: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container principal */
.container {
    display: flex;
    min-height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
    background: var(--card-background);
    box-shadow: var(--shadow-medium);
}

/* Seção de login */
.login-container {
    flex: 1;
    padding: 40px;
    display: flex;
    border-radius: var(--border-radius);
    flex-direction: column;
    justify-content: center;
    max-width: 500px;
    background: var(--card-background);
}

/* Logo e título */
.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.logo i {
    font-size: 2.5rem;
    color: var(--accent-color);
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 300;
}

/* Formulários */
.form-container {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}
    
.form-container:hover {
    box-shadow: var(--shadow-medium);
}

.form-container h2 {
    color: var(--primary-color);
    margin-bottom: 25px;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-container h2 i {
    color: var(--accent-color);
}

/* Grupos de input */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1rem;
    z-index: 2;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 85%;
    padding: 15px 15px 15px 45px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--card-background);
    color: var(--text-primary);
    transition: var(--transition);
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.input-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Botões */
.btn-primary,
.btn-secondary {
    padding: 0.4rem 1.0rem;
    width: 80%;
    border: none;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-dark {
    padding: 0.4rem 1.0rem;
    width: 80%;
    border: none;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--light-accent);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

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

.btn-dark:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Links de troca de formulário */
.form-switch {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
}

.form-switch a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.form-switch a:hover {
    color: var(--light-accent);
}

/* Seção de contato */
.contact-section {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}


    
.contact-section h3 {
    text-align: center;
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
    color: #2d3b5e;
    font-weight: 600;
    letter-spacing: 1px;
}
.contato-form {
   width: 100%;
    max-width: 100%;
}

.contato-form input, #contato-form textarea {
 width: 100%;
    box-sizing: border-box;
    display: block;
    /* Se precisar, adicione: */
    max-width: 100%;
}

.contato-form input:focus, #contato-form textarea:focus {
    border-color: #355aac;
    background: #fff;
}
.contato-form textarea {
    min-height: 100px;
    max-height: 220px;
}
.contato-form button[type=submit] {
    background: linear-gradient(90deg,#355aac 70%, #4dd0e1 120%);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.8em 0;
    font-size: 1.08em;
    font-weight: 600;
    box-shadow: 0 1px 6px 0 rgba(60,110,255,0.10);
    cursor: pointer;
    transition: background .22s;
}
.contato-form button[type=submit]:hover {
    background: linear-gradient(90deg,#29438a 70%, #32b1c7 120%);
}
.contato-msg {
    text-align: center;
    margin-top: 1.2rem;
    min-height: 24px;
    font-size: 1.06em;
}
@media (max-width: 600px) {
    .contact-section {
        padding: 1.1rem 0.5rem 1rem 0.5rem;
        width: 100%;
        border-radius: 14px;
    }
    .contato-form input, #contato-form textarea {
        font-size: 1em;
        padding: 0.78em 0.8em;
    }
    .contato-form button[type=submit] {
        font-size: 1em;
        padding: 0.7em 0;
    }
}

/* Seção de demonstração */
.demo-section {
    flex: 1;
    padding: 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.demo-section h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.demo-section h2 i {
    color: var(--light-accent);
}

/* Vídeos de demonstração */
.demo-videos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.demo-video {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.demo-video:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.video-thumbnail {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    transition: var(--transition);
}

.demo-video:hover .video-thumbnail {
    background: var(--light-accent);
}

.video-thumbnail i {
    font-size: 2rem;
    color: white;
}

.demo-video h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.demo-video p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.feature {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.feature:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
}

.feature i {
    font-size: 2.5rem;
    color: var(--light-accent);
    margin-bottom: 15px;
    display: block;
}

.feature h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.feature p {
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.5;
}

/* Modais */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 62, 80, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-medium);
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.close:hover {
    color: var(--primary-color);
}

/* Loading spinner */
.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* Alertas */
.alert {
    padding: 15px 20px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Utilitários */
.hidden {
    display: none !important;
}

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

/* Responsividade */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .login-container,
    .demo-section {
        padding: 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .demo-videos {
        grid-template-columns: 1fr;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .demo-section h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .login-container,
    .demo-section {
        padding: 15px;
    }
    
    .form-container,
    .contact-section {
        padding: 20px;
    }
    
    .modal-content {
        padding: 20px;
        width: 95%;
    }
}

/* Sistema de Matrículas */
#containerProfessor, #containerTurmas {
    margin-top: 15px;
}

.turmas-checkboxes {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    padding: 10px;
    background: #f8f9fa;
}

.turma-checkbox-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

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

.turma-checkbox-item input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.2);
}

.turma-checkbox-item label {
    cursor: pointer;
    font-size: 14px;
    line-height: 1.4;
    color: #2c3e50;
}

.container-campo-condicional {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}