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

body {
  background: #f4f6f8;
}

/* ===== HEADER ===== */
#topHeader {
  width: 100%;
}

.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: #fff;
  border-bottom: 1px solid #ddd;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
}

.blue { color: blue; }
.green { color: green; }

nav a {
  margin: 0 6px;
  text-decoration: none;
  color: #333;
  font-weight: bold;
}

.login-btn {
  padding: 6px 12px;
  border: 1px solid #007bff;
  color: #007bff;
  border-radius: 4px;
}

.signup-btn {
  padding: 6px 12px;
  background: #28a745;
  color: #fff;
  border-radius: 4px;
}

.notice-bar {
  background: #000;
  color: red;
  padding: 6px 0;
  font-weight: bold;
}

/* ===== LOGIN FORM ===== */
.login-container {
  max-width: 400px;
  background: #fff;
  margin: 50px auto;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.login-container h2 {
  text-align: center;
  margin-bottom: 5px;
}

.subtitle {
  text-align: center;
  color: #777;
  margin-bottom: 20px;
}

.input-box {
  margin-bottom: 15px;
}

.input-box label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.input-box input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  width: 100%;
  padding: 12px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background: #0056b3;
}

.signup-link {
  text-align: center;
  margin-top: 15px;
}

.signup-link a {
  color: #007bff;
  text-decoration: none;
}