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

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #121212;
  color: #f5f5f5;
  display: flex;
  height: 100vh;
}

.container {
  display: flex;
  width: 100%;
  height: 100vh;
}

.left-panel {
  width: 50%;
  background: radial-gradient(circle at center, #1e1e1e, #111);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.left-panel::before {
  display: none;
}

.left-panel img {
  width: 140px;
  margin-bottom: 24px;
  z-index: 1;
}

.left-panel h1 {
  font-size: 40px;
  color: #FFD700;
  z-index: 1;
}

.subtitle {
  font-size: 16px;
  color: #ccc;
  font-style: italic;
  margin-top: 8px;
  z-index: 1;
}

.right-panel {
  width: 50%;
  background-color: #1a1a1a;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
}

.login-form {
  background-color: #2a2a2a;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 400px;
}

.login-form h2 {
  text-align: center;
  color: #FFD700;
  margin-bottom: 24px;
}

.login-form input {
  width: 100%;
  padding: 14px;
  margin-bottom: 18px;
  border: 1px solid #444;
  border-radius: 10px;
  background-color: #1e1e1e;
  color: #fff;
  font-size: 16px;
}

.login-form button {
  width: 100%;
  padding: 14px;
  background-color: #FFD700;
  border: none;
  border-radius: 10px;
  color: #000;
  font-weight: bold;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s;
}

.login-form button:hover {
  background-color: #e6c200;
}

.login-form p {
  text-align: center;
  margin-top: 16px;
  font-size: 14px;
}

.login-form a {
  color: #FFD700;
  text-decoration: none;
}

.error-message {
  background-color: #d9534f;
  color: white;
  padding: 12px;
  margin-bottom: 16px;
  border-radius: 8px;
  text-align: center;
  font-size: 14px;
}

@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }

  .left-panel,
  .right-panel {
    width: 100%;
    height: 50%;
  }

  .left-panel h1 {
    font-size: 28px;
  }

  .login-form {
    padding: 30px;
  }
}
  

.login-form .hint {
  color: #999;
}