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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.login-box {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    color: #333;
    font-size: 32px;
    margin-bottom: 10px;
}

.logo p {
    color: #666;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    outline: none;
    border-color: #667eea;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.remember-me label {
    color: #666;
    font-size: 14px;
    cursor: pointer;
}

.login-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.error-message {
    margin-top: 15px;
    padding: 10px;
    background: #fee;
    color: #c33;
    border-radius: 5px;
    font-size: 14px;
    display: none;
}

.error-message.show {
    display: block;
}

.links {
    text-align: center;
    margin-top: 20px;
}

.links a {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
}

.links a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }
}