* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #DDEBFF;
    color: #323C46;
    -webkit-text-size-adjust: 100%;
}

.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px 16px;
}

.card {
    width: 100%;
    max-width: 440px;
    background: rgba(255, 255, 255, 0.96);
    padding: 30px 32px;
    border: 1px solid #c8d8e5;
    border-radius: 18px;
    box-shadow: 0 12px 35px rgba(50, 60, 70, 0.14);
}

.brand-logo {
    display: block;
    width: min(260px, 80%);
    margin: 0 auto 18px;
}

.brand-logo img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 170px;
    object-fit: contain;
}

h1 {
    margin: 0 0 8px;
    text-align: center;
    font-size: 30px;
    color: #323C46;
}

.muted {
    margin: 0 0 24px;
    text-align: center;
    color: #687681;
}

label {
    display: block;
    margin: 15px 0 7px;
    font-weight: 700;
    font-size: 14px;
    color: #323C46;
}

input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #b8cddd;
    border-radius: 10px;
    font-size: 16px;
    color: #323C46;
    outline: none;
    background: #fff;
}

input:focus {
    border-color: #006699;
    box-shadow: 0 0 0 3px rgba(0, 102, 153, 0.13);
}

button {
    width: 100%;
    margin-top: 22px;
    padding: 13px 18px;
    border: 1px solid #006699;
    border-radius: 10px;
    background: #006699;
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
}

button:hover,
button:focus {
    background: #005680;
}

.switch,
.home-link {
    text-align: center;
    color: #687681;
}

.switch {
    margin: 22px 0 0;
}

.home-link {
    margin: 14px 0 0;
    font-size: 14px;
}

a {
    color: #006699;
    font-weight: 700;
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

.alert {
    margin: 18px 0;
    padding: 13px 15px;
    border-radius: 10px;
}

.alert.error {
    background: #fff4f4;
    border: 1px solid #e6b8b8;
    color: #8a2d2d;
}

.alert ul {
    margin: 0;
    padding-left: 20px;
}

@media (max-width: 520px) {
    .auth-shell {
        align-items: flex-start;
        padding: 18px 12px;
    }

    .card {
        padding: 24px 18px;
        border-radius: 15px;
    }

    .brand-logo {
        width: min(230px, 78vw);
        margin-bottom: 14px;
    }

    h1 {
        font-size: 26px;
    }

    input,
    button {
        min-height: 48px;
    }
}