/* Grade dos vídeos */
.student-videos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.student-video-item {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 12px;
  padding: 15px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease;
}

.student-video-item:hover {
  transform: translateY(-5px);
}

.student-video-item p {
  text-align: center;
  font-weight: bold;
  color: #333;
  margin-bottom: 10px;
}

.video-wrap iframe {
  width: 100%;
  height: 360px;
  border-radius: 10px;
}

@media (max-width: 600px) {
  .video-wrap iframe {
    height: 220px;
  }
}

/* Mensagens de sucesso (cadastro e login) */
.cadastro-sucesso,
.login-sucesso {
  text-align: center;
  margin: 20px auto;
  padding: 12px 18px;
  max-width: 400px;
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
  border-radius: 6px;
  font-weight: bold;
}

/* Formulário de login/cadastro */
.student-login-form,
.student-register-form {
  max-width: 400px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 12px;
  padding: 25px 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.student-login-form p,
.student-register-form p {
  display: flex;
  flex-direction: column;
  margin-bottom: 15px;
}

.student-login-form label,
.student-register-form label {
  font-weight: 600;
  margin-bottom: 5px;
  color: #333;
}

.student-login-form input,
.student-register-form input {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
  width: 100%;
  box-sizing: border-box;
}

.student-login-form input:focus,
.student-register-form input:focus {
  border-color: #28a745;
  outline: none;
  box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.2);
}

.student-login-form button,
.student-register-form button {
  background-color: #28a745;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.student-login-form button:hover,
.student-register-form button:hover {
  background-color: #218838;
}

@media (max-width: 480px) {
  .student-login-form,
  .student-register-form {
    padding: 20px 15px;
  }
}

/* Mensagem verde de sucesso após cadastro */
.cadastro-sucesso {
    text-align: center;
    margin: 20px auto;
    padding: 12px 18px;
    max-width: 400px;
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    border-radius: 6px;
    font-weight: bold;
}

/* Mensagem de erro */
.error-message {
    text-align: center;
    margin: 20px auto;
    padding: 12px 18px;
    max-width: 400px;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    border-radius: 6px;
    font-weight: bold;
}

/* Formulário */
.student-register-form input,
.student-login-form input {
    width: 100%;
    margin-bottom: 10px;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #ccc;
}

.student-register-form input[type="submit"],
.student-login-form input[type="submit"] {
    background-color: #0073aa;
    color: #fff;
    border: none;
    cursor: pointer;
}

.student-register-form input[type="submit"]:hover,
.student-login-form input[type="submit"]:hover {
    background-color: #005177;
}
/* ============================
   Vídeos responsivos e centralizados
   ============================ */
.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 100%;
    padding-bottom: 56.25%; /* proporção 16:9 */
    height: 0;
    margin: 20px auto; /* centraliza */
}

.video-wrapper iframe,
.video-wrapper video,
.student-area iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
}

/* Altura fixa no desktop */
@media (min-width: 769px) {
    .student-area iframe {
        height: 560px !important;
        aspect-ratio: auto;
    }
}

/* Responsivo no mobile */
@media (max-width: 768px) {
    .student-area iframe {
        height: auto !important;
        aspect-ratio: 16/9;
    }
}