* {
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
  margin: 0;
  padding: 0;
}

body,
html {
  height: 100vh;
  display: flex;
  background-color: #000;
}

.left {
  background-color: #111;
  color: #fff;
  width: 45%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 40px;
}

.left h1 {
  font-size: 48px;
  margin-bottom: 10px;
  color: #fff;
}

.left p {
  font-size: 18px;
  opacity: 0.9;
}

.right {
  background-color: #000;
  width: 55%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-box {
  width: 100%;
  max-width: 350px;
  background-color: #1a1a1a;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(255, 0, 0, 0.1);
}

.login-box h2 {
  text-align: center;
  margin-bottom: 25px;
  color: #fff;
}

.login-box input {
  width: 100%;
  padding: 12px 15px;
  margin: 10px 0;
  border: 1px solid #444;
  border-radius: 8px;
  font-size: 16px;
  background-color: #111;
  color: #eee;
}

.login-box input:focus {
  border-color: #b30000;
  outline: none;
  background-color: #151515;
}

.login-box button {
  width: 100%;
  padding: 12px;
  background-color: #b30000;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 10px;
  transition: background 0.3s ease;
}

.login-box button:hover {
  background-color: #a00000;
}

#error {
  margin-top: 12px;
  color: #ff4d4d;
  font-size: 14px;
  display: none;
  text-align: center;
}

@media (max-width: 768px) {
  body,
  html {
    flex-direction: column;
  }

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