:root {
    --bs-primary: #142a63;
    --bs-primary-rgb: 20, 42, 99;
    --uhg-blue: #142a63;
    --uhg-blue-dark: #0f224f;
    --uhg-gold: #f2c230;
    --uhg-bg: #f3f6fb;
}

html,
body {
    height: 100%;
}

body {
    background: linear-gradient(180deg, #f7f9fd 0%, var(--uhg-bg) 100%);
    color: #1d2a4a;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto;
}

.site-header.navbar.bg-primary {
    background: linear-gradient(90deg, var(--uhg-blue-dark) 0%, var(--uhg-blue) 100%) !important;
    border-bottom: 3px solid var(--uhg-gold);
}

.guest-meta {
    letter-spacing: 0.2px;
}

.site-header .nav-link {
    color: rgba(255, 255, 255, 0.88);
}

.site-header .nav-link:hover,
.site-header .nav-link:focus,
.site-header .nav-link.active {
    color: #ffffff;
    background: rgba(242, 194, 48, 0.2);
    border-radius: 0.35rem;
}

.stat-card {
    border-left: 4px solid var(--uhg-gold);
    box-shadow: 0 6px 16px rgba(15, 34, 79, 0.08);
}

.brand-logo {
    height: 40px;
    width: auto;
    display: block;
}

.brand-title {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.2px;
}

.table td,
.table th {
    vertical-align: middle;
}

.table-responsive .table {
    min-width: 720px;
}

.table-responsive .table td,
.table-responsive .table th {
    white-space: nowrap;
}

.navbar-meta {
    flex-wrap: wrap;
}

.navbar-meta .btn,
.navbar-meta .badge {
    margin-top: 2px;
}

.btn-primary {
    --bs-btn-bg: var(--uhg-blue);
    --bs-btn-border-color: var(--uhg-blue);
    --bs-btn-hover-bg: var(--uhg-blue-dark);
    --bs-btn-hover-border-color: var(--uhg-blue-dark);
}

.btn-outline-primary {
    --bs-btn-color: var(--uhg-blue);
    --bs-btn-border-color: var(--uhg-blue);
    --bs-btn-hover-bg: var(--uhg-blue);
    --bs-btn-hover-border-color: var(--uhg-blue);
}

.site-footer {
    background: #f0f3fa;
    border-top: 2px solid #d8e0f0;
    color: #2a3a64;
}

.site-footer a {
    color: var(--uhg-blue);
    text-decoration: none;
}

.site-footer a:hover {
    text-decoration: underline;
}

.auth-shell .auth-card {
    border-top: 4px solid var(--uhg-gold);
    border-radius: 0.6rem;
}

@media (max-width: 991.98px) {
    .brand-logo {
        height: 34px;
    }

    .brand-title {
        font-size: 0.85rem;
    }

    .navbar-meta {
        width: 100%;
        margin-top: 0.75rem;
        justify-content: flex-start;
        gap: 0.5rem;
    }

    .guest-meta {
        display: none;
    }
}

@media (max-width: 767.98px) {
    h1.h3,
    h2.h4,
    h2.h5 {
        line-height: 1.25;
    }

    .table-responsive .table {
        min-width: 640px;
        font-size: 0.875rem;
    }

    .site-footer .small {
        line-height: 1.45;
    }

    .d-flex.justify-content-between.align-items-center.mb-3 {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .card .d-flex.gap-2,
    .card .d-inline-flex.gap-2 {
        flex-wrap: wrap;
    }

    .loan-return-form {
        align-items: stretch;
    }

    .loan-return-form .form-select,
    .loan-return-form .form-control,
    .loan-return-form .btn {
        width: 100%;
    }
}

@media print {
    nav,
    .btn,
    form,
    .no-print,
    .site-footer {
        display: none !important;
    }

    body {
        background: #fff;
    }
}