/* Background */
.bg {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: url('../img/bg1.jpg') no-repeat center center fixed;
  background-size: cover;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

/* Form box */
.form-box {
  background: rgba(255, 255, 255, 0.3);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  text-align: center;
  width: 320px;
}

.form-box h2 {
  margin-bottom: 20px;
  color: #8B0000;
}

/* Input */
.form-box input {
  width: 100%;
  padding: 12px;
  margin: 8px 0;
  border: none;
  border-radius: 6px;
  outline: none;
  background: #f1f1f1;
  box-sizing: border-box;   /* ✅ fix chiều rộng */
}

/* Button */
.form-box .btn {
  width: 100%;             /* ✅ bằng input */
  padding: 12px;
  margin-top: 10px;
  background: #8B0000;
  border: none;
  color: white;
  font-size: 16px;
  border-radius: 6px;
  cursor: pointer;
  transition: 0.3s;
  box-sizing: border-box;   /* ✅ đồng bộ với input */
}

.form-box .btn:hover {
  background: #600000;
}

/* Links */
.links {
  margin-top: 15px;
  display: flex;
  justify-content: space-between;
}

.links a {
  text-decoration: none;
  font-size: 14px;
  color: #8B0000;
}

.links a:hover {
  text-decoration: underline;
}