* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Avenir Next', Avenir, 'Trebuchet MS', sans-serif;
  background: transparent;
  min-height: 100vh;
  color: #2c3e50;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-logo-img {
  width: 110px;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 18px;
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-card {
  background: #eef1f4;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  padding: 40px;
  width: 100%;
}

.logo {
  text-align: center;
  margin-bottom: 40px;
}

.logo h2 {
  color: #2c3e50;
  font-size: 26px;
  margin-bottom: 10px;
}

.logo p {
  color: #7f8c8d;
  font-size: 14px;
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  color: #333;
  font-weight: 500;
  margin-bottom: 8px;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 14px;
  transition: border-color 0.3s;
}

.form-group input:focus {
  outline: none;
  border-color: #1a88d4;
}

.error-message {
  background-color: #fee;
  color: #c33;
  padding: 12px;
  border-radius: 5px;
  margin-bottom: 20px;
  text-align: center;
  font-size: 14px;
}

.info-message {
  background-color: #eef6ff;
  color: #2c3e50;
  padding: 12px;
  border-radius: 5px;
  margin-bottom: 20px;
  text-align: center;
  font-size: 14px;
}

.code-help {
  margin-top: 6px;
  font-size: 12px;
  color: #7f8c8d;
}

.login-btn {
  width: 100%;
  padding: 14px;
  background: #1a88d4;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(26, 136, 212, 0.35);
}

.login-btn:active {
  transform: translateY(0);
}

.login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

@media (max-width: 900px) {
  .login-container {
    max-width: 100%;
    padding: 30px 20px 50px;
  }
}