* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;

    min-height: 100%;

    font-family:
        Arial,
        Helvetica,
        sans-serif;
}

body {
    background:
        linear-gradient(
            135deg,
            #007bff,
            #0056b3
        );
}


.login-page {
    min-height: 100vh;

    display: flex;

    align-items: center;
    justify-content: center;

    padding: 20px;
}


.login-card {
    width: 100%;
    max-width: 420px;

    background: white;

    border-radius: 12px;

    padding: 35px;

    box-shadow:
        0 15px 45px
        rgba(0, 0, 0, .20);
}


.login-logo {
    display: flex;

    justify-content: center;

    margin-bottom: 15px;
}


.logo-icon {
    width: 65px;
    height: 65px;

    border-radius: 15px;

    display: flex;

    align-items: center;
    justify-content: center;

    background: #007bff;

    color: white;

    font-size: 24px;

    font-weight: bold;
}


.login-title {
    text-align: center;

    margin-bottom: 25px;
}


.login-title h1 {
    margin: 0;

    font-size: 24px;

    color: #343a40;
}


.login-title p {
    margin:
        7px
        0
        0;

    color: #6c757d;

    font-size: 14px;
}


.form-group {
    margin-bottom: 18px;
}


.form-group label {
    display: block;

    margin-bottom: 7px;

    font-size: 14px;

    font-weight: 600;

    color: #343a40;
}


.form-group input {
    width: 100%;

    height: 45px;

    padding:
        0
        13px;

    border:
        1px solid #ced4da;

    border-radius: 6px;

    font-size: 14px;

    outline: none;

    transition: .2s;
}


.form-group input:focus {
    border-color: #007bff;

    box-shadow:
        0 0 0 3px
        rgba(0,123,255,.10);
}


.login-button {
    width: 100%;

    height: 45px;

    border: none;

    border-radius: 6px;

    background: #007bff;

    color: white;

    font-size: 14px;

    font-weight: 600;

    cursor: pointer;

    transition: .2s;
}


.login-button:hover {
    background: #0069d9;
}


.login-error {
    background: #f8d7da;

    color: #721c24;

    border:
        1px solid #f5c6cb;

    border-radius: 6px;

    padding: 11px;

    margin-bottom: 18px;

    font-size: 13px;

    text-align: center;
}


.demo-account {
    margin-top: 20px;

    padding: 13px;

    background: #f8f9fa;

    border-radius: 6px;

    font-size: 12px;

    line-height: 1.8;

    color: #6c757d;
}


.demo-account strong {
    display: block;

    color: #343a40;

    margin-bottom: 2px;
}


.demo-account b {
    color: #007bff;
}


.login-footer {
    text-align: center;

    margin-top: 25px;

    font-size: 11px;

    color: #adb5bd;
}


@media (max-width: 480px) {

    .login-card {
        padding: 25px 20px;
    }

}