:root {
    --sga-black: #050505;
    --sga-black-soft: #111111;
    --sga-black-panel: #181818;
    --sga-white: #ffffff;
    --sga-white-soft: #f5f5f5;
    --sga-border: #d7d7d7;
    --sga-text: #111111;
    --sga-muted: #6b7280;
    --sga-gold: #c9a227;
    --sga-gold-soft: #f3d675;
    --sga-gold-dark: #8a6d12;
}

body.sga-auth-body {
    min-height: 100vh;
    margin: 0;
    margin-bottom: 0;
    background: radial-gradient(circle at top left, rgba(201, 162, 39, .18), transparent 28%), radial-gradient(circle at bottom right, rgba(201, 162, 39, .12), transparent 32%), linear-gradient(135deg, #000000 0%, #111111 48%, #242424 100%);
    color: var(--sga-text);
}

.sga-auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.sga-auth-card {
    width: 100%;
    max-width: 460px;
    background: var(--sga-white);
    border: 1px solid rgba(201, 162, 39, .45);
    border-radius: 22px;
    box-shadow: 0 28px 80px rgba(0, 0, 0, .55);
    padding: 32px;
    position: relative;
    overflow: hidden;
}

    .sga-auth-card::before {
        content: "";
        position: absolute;
        inset: 0 0 auto 0;
        height: 5px;
        background: linear-gradient(90deg, var(--sga-gold-dark), var(--sga-gold), var(--sga-gold-soft));
    }

.sga-auth-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 26px;
}

.sga-auth-logo {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background: var(--sga-black);
    color: var(--sga-gold-soft);
    border: 1px solid var(--sga-gold);
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: .5px;
}

.sga-auth-title {
    font-size: 1.18rem;
    font-weight: 900;
    color: var(--sga-black);
}

.sga-auth-subtitle {
    font-size: .86rem;
    color: var(--sga-muted);
}

.sga-auth-institution {
    background: #fafafa;
    border: 1px solid #e5e5e5;
    border-left: 5px solid var(--sga-gold);
    border-radius: 16px;
    padding: 14px 16px;
    margin-bottom: 24px;
}

.sga-auth-label {
    font-size: .72rem;
    color: var(--sga-gold-dark);
    text-transform: uppercase;
    font-weight: 900;
    letter-spacing: .08em;
    margin-bottom: 4px;
}

.sga-auth-institution-name {
    font-weight: 900;
    color: var(--sga-black);
    line-height: 1.25;
}

.sga-auth-institution-short {
    margin-top: 3px;
    font-size: .85rem;
    color: var(--sga-gold-dark);
    font-weight: 800;
}

.sga-auth-heading {
    font-size: 1.65rem;
    font-weight: 900;
    margin-bottom: 6px;
    color: var(--sga-black);
}

.sga-auth-description {
    color: var(--sga-muted);
    margin-bottom: 24px;
}

.sga-auth-input {
    min-height: 46px;
    border-radius: 12px;
    border-color: #d7d7d7;
}

    .sga-auth-input:focus {
        border-color: var(--sga-gold);
        box-shadow: 0 0 0 .2rem rgba(201, 162, 39, .22);
    }

.sga-auth-button {
    min-height: 46px;
    border-radius: 12px;
    font-weight: 800;
    background: var(--sga-black);
    border-color: var(--sga-black);
    color: var(--sga-white);
}

    .sga-auth-button:hover {
        background: #222222;
        border-color: var(--sga-gold);
        color: var(--sga-gold-soft);
    }

    .sga-auth-button:focus {
        box-shadow: 0 0 0 .2rem rgba(201, 162, 39, .28);
    }

.sga-auth-footer {
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid #e5e5e5;
    text-align: center;
    color: var(--sga-muted);
    font-size: .85rem;
}

.form-check-input:checked {
    background-color: var(--sga-black);
    border-color: var(--sga-black);
}

.form-check-input:focus {
    border-color: var(--sga-gold);
    box-shadow: 0 0 0 .2rem rgba(201, 162, 39, .22);
}

.text-danger {
    color: #b91c1c !important;
}

@media (max-width: 575.98px) {
    .sga-auth-page {
        padding: 16px;
    }

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