/* Login page styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.login-box {
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 0.5rem;
    font-size: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    color: #2c3e50;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    box-sizing: border-box;
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #3498db;
}

input[readonly] {
    background-color: #f5f5f5;
    color: #666;
    cursor: default;
}

.login-btn {
    width: 100%;
    padding: 0.75rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.login-btn:hover {
    background-color: #2980b9;
}

.error-message {
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: #fee;
    color: #e74c3c;
    border-radius: 4px;
    text-align: center;
    font-size: 0.9rem;
}

.error-message:empty {
    display: none;
}