body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  color: #333;
}

header {
  background: #555;
  color: white;
  padding: 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

a {
  text-decoration: none;
  color: #333;
}

.login-body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.login-box {
  background: white;
  padding: 30px;
  width: 300px;
  text-align: center;
  border-radius: 8px;
}

.login-box input {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
}

.login-box button {
  width: 100%;
  padding: 10px;
  background: #666;
  color: white;
  border: none;
  cursor: pointer;
}

#erro {
  color: red;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card {
  background: white;
  padding: 30px;
  border-radius: 8px;
  font-size: 20px;
  flex: 1;
  text-align: center;
}

.subtitulo {
  font-size: 14px;
  color: #666;
  margin-bottom: 15px;
}

.subtitulo-header {
  color: #eee;
  font-weight: 300;
}

.turma-header {
  color: #ddd;
  font-size: 13px;
  margin-top: 5px;
}

.turma-conteudo {
  background: white;
  padding: 20px;
  margin: 20px;
  border-radius: 8px;
}

.info-login {
  color: #ccc;
  font-size: 12px;
  margin-top: 3px;
}

.topo {
  background: #555;
  color: white;
  padding: 15px 25px;
  display: grid;
  grid-template-columns: 2fr 1fr 2fr;
  align-items: center;
}

.topo-esquerda h1 {
  margin: 0;
  font-size: 22px;
}

.subtitulo-header {
  color: #eee;
  font-size: 13px;
  margin-top: 4px;
}

.topo-centro {
  text-align: center;
  font-weight: bold;
}

.turma-header {
  font-size: 14px;
}

.topo-direita {
  text-align: right;
  font-size: 12px;
}

.info-login {
  color: #ddd;
  margin: 2px 0;
}

.topo-direita button {
  margin-top: 6px;
  padding: 5px 10px;
  background: #777;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.topo-direita button:hover {
  background: #999;
}

.aviso {
  background: white;
  padding: 15px 20px;
  margin: 15px 25px;
  border-left: 5px solid #777;
  border-radius: 6px;
}

.aviso h3 {
  margin: 0 0 5px 0;
}

.aviso p {
  margin: 0;
  font-size: 14px;
}

.card-prof {
  border: 2px dashed #999;
}

form input, form textarea, form select {
  width: 100%;
  padding: 8px;
  margin: 6px 0;
}

form button {
  padding: 8px 15px;
  background: #666;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.aviso-importante {
  border-left: 6px solid #c0392b;
  background: #fff5f5;
}

.aviso-importante h3::before {
  content: "⚠️ IMPORTANTE ";
  color: #c0392b;
  font-weight: bold;
}

/* ================== MODO ESCURO ================== */

body.dark {
  background-color: #121212;
  color: #eaeaea;
}

body.dark header {
  background: #1e1e1e;
}

body.dark .card,
body.dark .aviso {
  background: #1f1f1f;
  color: #eaeaea;
}

body.dark a {
  color: #9ecbff;
}

body.dark button {
  background: #333;
  color: #fff;
  border: 1px solid #555;
}

body.dark .aviso-importante {
  background: #2a1a1a;
  border-left-color: #e74c3c;
}

#lista-glossario .card {
  margin-bottom: 15px;
}

#lista-glossario h3 {
  margin-bottom: 5px;
  color: #2c3e50;
}

body.dark #lista-glossario h3 {
  color: #9ecbff;
}

#busca-glossario {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

body.dark #busca-glossario {
  background: #1f1f1f;
  color: #eaeaea;
  border-color: #555;
}