/* Um CSS básico apenas para deixar o formulário centralizado e apresentável */
        body { font-family: Arial, sans-serif; background-color: #f4f4f9; display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; }
        .login-container { background: white; padding: 30px; border-radius: 8px; box-shadow: 0 4px 8px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
        h2 { text-align: center; color: #333; }
        .form-group { margin-bottom: 15px; }
        label { display: block; margin-bottom: 5px; color: #666; }
        input[type="email"], input[type="password"] { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
        button { width: 100%; padding: 10px; background-color: #0056b3; color: white; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; }
        button:hover { background-color: #004494; }
        .erro { color: red; text-align: center; margin-bottom: 15px; }

/* Reset básico de CSS */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        body {
            margin: 0;
            padding: 0;
            background-color: #ffffff;
            color: #333;
            display: flex;
            flex-direction: column;
            height: 100vh;
        }

        /* --- CABEÇALHO SUPERIOR --- */
        .top-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 40px;
            height: 80px;
            background-color: #ffffff;
            border-bottom: 1px solid #eaeaea;
            width: 100%; /* Garante que ele ocupe a tela toda */
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1000;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .logo-img {
            width: 50px; /* Ajuste o tamanho da sua logo aqui */
            height: auto;
        }

        .logo-text h1 {
            font-size: 20px;
            color: #1c4a8a;
            font-weight: 600;
        }

        .logo-text p {
            font-size: 12px;
            color: #666;
            font-style: italic;
        }

        .header-texto-img {
            height: 70px; /* Aumente ou diminua esse valor para ajustar o tamanho do texto */
            width: auto;
        }

        .user-profile {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .profile-img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            object-fit: cover;
            background-color: #ccc; /* Cor de fundo enquanto não tem imagem */
        }

        .user-name {
            font-weight: 600;
            color: #1c4a8a;
        }

        .notification-badge {
            background-color: #e74c3c;
            color: white;
            border-radius: 50%;
            padding: 2px 6px;
            font-size: 12px;
            font-weight: bold;
            margin-left: -5px;
            position: relative;
            top: -10px;
        }

        /* --- CONTAINER PRINCIPAL (MENU + CONTEÚDO) --- */
        .main-container {
            display: block;
            width: 100%;
            background-color: white;
            
        }

        /* --- MENU LATERAL (SIDEBAR) --- */
        .sidebar {
            width: 250px;
            background-color: #f0f4fb;
            padding-top: 20px;
            display: flex;
            flex-direction: column;

            /* Mágica para fixar na esquerda: */
            position: fixed;
            top: 80px; /* Começa exatamente onde o cabeçalho termina (supondo que ele tem 80px) */
            left: 0;
            height: calc(100vh - 80px); /* Pega 100% da altura da tela (100vh) MENOS os 80px do cabeçalho */
            z-index: 100; /* Garante que fique por cima do conteúdo */
            
            /* Se no futuro tiverem muitos links, o menu ganha sua própria barra de rolagem: */
            overflow-y: auto;
        }

        .sidebar ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .sidebar li a {
            display: flex;
            align-items: center;
            padding: 15px 30px;
            color: #1c4a8a;
            text-decoration: none;
            font-weight: 500;
            gap: 15px;
            border-left: 5px solid transparent;
            transition: 0.3s;
        }

        .sidebar li a:hover {
            background-color: #e2e8f0;
        }

        .sidebar li.active a {
            background-color: #ffffff;
            border-left-color: #1c4a8a;
            font-weight: 600;
            border-radius: 0 20px 20px 0;
            margin-right: 20px;
        }

        .sidebar li.logout {
            margin-top: auto;
            margin-bottom: 20px;
        }

        /* --- ÁREA DE CONTEÚDO --- */
        .content-area {
            flex: 1;
            padding: 30px 40px;
            background-color: #ffffff;
            /* Empurra o conteúdo para a direita para não ficar atrás da sidebar fixada: */
            margin-left: 110px; /* Exatamente a mesma largura da .sidebar */
            /* Se o conteúdo estiver entrando embaixo do cabeçalho fixo, adicione isto: */
            margin-top: 50px;
            min-height: calc(100vh - 80px); /* Garante que o fundo branco vá até o final da tela */
        }

        .greeting h2 {
            font-size: 28px;
            color: #1c4a8a;
            margin-bottom: 10px;
            text-align: left;
        }

        .greeting p {
            color: #666;
            margin-bottom: 40px;
            font-size: 16px;
            text-align: left;
        }

        /* --- CARDS --- */
        .cards-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .card {
            border-radius: 15px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .card-img-placeholder {
            width: 120px;
            height: 100px;
            margin-bottom: 20px;
            object-fit: contain;
        }

        .card h3 {
            font-size: 20px;
            margin-bottom: 20px;
        }

        .card ul {
            list-style-type: disc;
            margin-left: 20px;
            margin-bottom: 30px;
            width: 100%;
            flex-grow: 1;
        }

        .card ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: #444;
        }

        .card button {
            width: 100%;
            padding: 12px;
            border: none;
            border-radius: 8px;
            color: white;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: 0.2s;
        }

        /* Cores Específicas de cada Card admin */
        .card-blue { background-color: #f0f4fb; }
        .card-blue h3 { color: #1c4a8a; }
        .card-blue button { background-color: #1c4a8a; }
        .card-blue button:hover { background-color: #143666; }

        .card-green { background-color: #e8f3e9; }
        .card-green h3 { color: #3b8456; }
        .card-green button { background-color: #3b8456; }
        .card-green button:hover { background-color: #2b6240; }

        .card-orange { background-color: #fcf4e8; }
        .card-orange h3 { color: #b87a2d; }
        .card-orange button { background-color: #c48c40; }
        .card-orange button:hover { background-color: #a1702f; }

        /*cards aluno */
         /* --- CARDS DOS CURSOS --- */
        .cards-container { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .card { border-radius: 15px; padding: 30px; display: flex; flex-direction: column; align-items: center; box-shadow: 0 4px 6px rgba(0,0,0,0.05); border: 1px solid #f0f0f0; transition: transform 0.2s; }
        .card:hover { transform: translateY(-5px); }
        .card-icon { font-size: 50px; margin-bottom: 20px; }
        .card h3 { font-size: 20px; margin-bottom: 10px; text-align: center; }
        .card p { font-size: 14px; color: #666; text-align: center; margin-bottom: 25px; flex-grow: 1; }
        .card button { width: 100%; padding: 12px; border: none; border-radius: 8px; color: white; font-weight: 600; font-size: 14px; cursor: pointer; transition: 0.2s; display: flex; justify-content: center; align-items: center; gap: 8px; }

        /* Cores Específicas de cada Card (Focadas no Aluno) */
        .card-curso { background-color: #f0f4fb; }
        .card-curso .card-icon { color: #1c4a8a; }
        .card-curso h3 { color: #1c4a8a; }
        .card-curso button { background-color: #1c4a8a; }
        .card-curso button:hover { background-color: #143666; }

 /* --- ESTILOS DO FORMULÁRIO DE UPLOAD --- */
        .form-container {
            max-width: 800px;
            margin: 0; /* Tiramos o 'auto' daqui. Isso faz o bloco colar na esquerda! */
        }

        .form-title {
            font-size: 24px;
            color: #1c4a8a;
            margin-bottom: 25px;
            font-weight: 600;
            text-align: left; /* Garante que o texto do título também fique à esquerda */
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            color: #333;
            font-size: 14px;
        }

        .form-group input[type="text"],
        .form-group input[type="url"] {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #e2e8f0;
            border-radius: 6px;
            font-size: 15px;
            outline: none;
            transition: border-color 0.2s;
            color: #555;
        }

        .form-group input:focus {
            border-color: #4a81b7;
        }

        /* Área de Drag and Drop */
        .upload-box {
            border: 2px dashed #cbd5e1;
            background-color: #f8fafc;
            border-radius: 8px;
            padding: 40px 20px;
            text-align: center;
            margin-bottom: 10px;
            transition: background-color 0.2s;
        }

        .upload-box:hover {
            background-color: #f1f5f9;
        }

        .upload-icon {
            font-size: 40px;
            color: #4a81b7;
            margin-bottom: 15px;
        }

        .upload-text {
            color: #64748b;
            margin-bottom: 15px;
            font-size: 15px;
        }

        .btn-selecionar {
            background-color: #4a81b7;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 500;
            cursor: pointer;
            transition: 0.2s;
        }

        .btn-selecionar:hover {
            background-color: #366491;
        }

        .file-formats {
            display: block;
            margin-top: 10px;
            font-size: 13px;
            color: #94a3b8;
        }

        /* Lista de Arquivos (O PDF embaix0) */
        .file-list {
            border: 1px solid #e2e8f0;
            border-radius: 6px;
            padding: 12px 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            background-color: #fff;
        }

        .file-info {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #333;
            font-size: 14px;
            font-weight: 500;
        }

        .icon-pdf {
            color: #e74c3c;
            font-size: 18px;
        }

        .icon-trash {
            color: #94a3b8;
            cursor: pointer;
            transition: color 0.2s;
        }

        .icon-trash:hover {
            color: #e74c3c;
        }

        /* Botão Enviar */
        .form-actions {
            display: flex;
            justify-content: flex-end;
        }

        .btn-enviar {
            background-color: #4a81b7;
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: 0.2s;
        }

        .btn-enviar:hover {
            background-color: #366491;
        }

        /* --- MODAL (POP-UP) --- */
        .modal-overlay {
            display: none; /* Escondido por padrão */
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5); /* Fundo semi-transparente */
            justify-content: center;
            align-items: center;
            z-index: 1000; /* Fica por cima de tudo */
        }

        .modal-box {
            background-color: white;
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            width: 350px;
        }

        .modal-box h3 {
            color: #1c4a8a;
            margin-bottom: 10px;
        }

        .modal-box p {
            color: #666;
            margin-bottom: 25px;
            font-size: 14px;
        }

        .modal-buttons {
            display: flex;
            justify-content: space-between;
            gap: 15px;
        }

        .btn-cancelar, .btn-confirmar {
            flex: 1;
            padding: 10px;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            transition: 0.2s;
        }

        .btn-cancelar {
            background-color: #f1f5f9;
            color: #333;
        }

            /* Botão pequeno para voltar */
        .btn-voltar {
            background-color: #f1f5f9; /* Fundo cinza bem clarinho e discreto */
            color: #475569; /* Letra cinza escuro */
            text-decoration: none;
            padding: 8px 16px; /* Tamanho delicado (8px altura, 16px largura) */
            font-size: 14px; /* Fonte menorzinha */
            border-radius: 6px; /* Bordinha levemente arredondada */
            font-weight: 500;
            transition: all 0.3s ease; /* Efeito suave ao passar o mouse */
        }

        /* Efeito quando passa o mouse por cima */
        .btn-voltar:hover {
            background-color: #e2e8f0;
            color: #1c4a8a; /* Muda o texto pro azul do sistema */
        }
        .btn-cancelar:hover {
            background-color: #e2e8f0;
        }

        .btn-confirmar {
            background-color: #e74c3c;
            color: white;
        }

        .btn-confirmar:hover {
            background-color: #c0392b;
        }

        .header-acoes {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            border-bottom: 2px solid #f0f4fb;
            padding-bottom: 15px;
        }

        .tabela-admin {
            width: 100%;
            border-collapse: collapse;
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        }

        .tabela-admin th, .tabela-admin td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid #eaeaea;
        }

        .tabela-admin th {
            background-color: #f8fafc;
            color: #1c4a8a;
            font-weight: 600;
        }

        .btn-editar {
            background-color: #e2e8f0;
            color: #475569;
            border: none;
            padding: 5px 10px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 500;
        }

        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ccc; /* Ajuste para a cor da borda que você já usa */
            border-radius: 6px;
            font-size: 15px;
            font-family: 'Inter', sans-serif;
            transition: all 0.3s ease;
            resize: vertical; /* Permite esticar só para baixo, sem quebrar o layout */
            min-height: 120px; /* Já começa com um tamanho excelente! */
            background-color: #f9fafb;
        }

        .form-group textarea:focus {
            border-color: #1c4a8a; /* Fica azulzinho ao clicar */
            background-color: #ffffff;
            outline: none;
            box-shadow: 0 0 0 3px rgba(28, 74, 138, 0.1); /* Efeito de foco */
        }

        /* Container responsivo e MENOR para o YouTube */
        .video-container {
            position: relative;
            width: 100%;
            max-width: 600px; /* AQUI ESTÁ O SEGREDO: O vídeo não vai passar desse tamanho! */
            aspect-ratio: 16 / 9; /* Mantém a proporção exata do YouTube automaticamente */
            border-radius: 8px; 
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            overflow: hidden;
            margin-top: 15px;
            margin-bottom: 20px;
        }

        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }