@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Playfair+Display:wght@600;700&display=swap');

:root {
    --navy: #172437;
    --navy2: #263951;
    --gold: #d9ad6a;
    --ink: #233044;
    --muted: #718095;
    --bg: #f5f7fa;
    --border: #e7ebf0;
    --shadow: 0 9px 30px rgba(29,44,68,.06)
}

html {
    scroll-behavior: smooth
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--ink);
    font-family: 'DM Sans',system-ui,sans-serif
}

h1, h2, h3, .navbar-brand {
    letter-spacing: -.025em
}

h1, h2 {
    font-weight: 700
}

a {
    color: #2263c4
}

    a:hover {
        color: #164a97
    }

.page-shell {
    width: min(1480px,calc(100% - 48px));
    margin-inline: auto
}

.main-content {
    flex: 1;
    padding-top: 25px;
    padding-bottom: 45px
}

.site-header {
    background: var(--navy);
    box-shadow: 0 3px 14px rgba(0,0,0,.1)
}

    .site-header .navbar {
        min-height: 75px
    }

.navbar-brand {
    font-family: 'Playfair Display',Georgia,serif;
    font-size: 1.36rem;
    color: #fff !important;
    white-space: normal
}

.brand-mark {
    color: var(--gold);
    font-size: 2rem;
    line-height: 1
}

.navbar-nav .nav-link {
    color: #dce3ed !important;
    font-size: .9rem;
    font-weight: 500;
    padding: .75rem .75rem !important;
    border-radius: 9px;
    transition: background .2s
}

    .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
        color: #fff !important;
        background: rgba(255,255,255,.1)
    }

.site-footer {
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 23px 0;
    color: var(--muted);
    font-size: .85rem
}

.library-hero {
    position: relative;
    overflow: hidden;
    border-radius: 18px;
    min-height: 350px;
    background: linear-gradient(90deg,rgba(16,27,42,.97) 0%,rgba(20,32,48,.9) 53%,rgba(20,32,48,.52) 100%),url('/images/library-hero.svg') center/cover;
    box-shadow: var(--shadow)
}

.library-hero-content {
    position: relative;
    padding: clamp(30px,6vw,80px);
    max-width: 850px;
    color: white
}

.library-hero h1 {
    font-family: 'Playfair Display',Georgia,serif;
    font-size: clamp(2.7rem,5vw,4.7rem);
    line-height: 1.13;
    margin: 15px 0 20px
}

.library-hero p {
    font-size: 1.1rem;
    max-width: 630px;
    color: #e3e8ef
}

.hero-eyebrow, .eyebrow {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--gold)
}

.btn-gold {
    background: var(--gold);
    border-color: var(--gold);
    color: #1b2634;
    font-weight: 700
}

    .btn-gold:hover {
        background: #e7be80;
        border-color: #e7be80;
        color: #1b2634
    }

.metric-card, .module-card, .book-card, .card {
    border: 1px solid var(--border);
    background: #fff;
    box-shadow: var(--shadow);
    border-radius: 14px
}

.metric-card {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-height: 150px
}

    .metric-card .metric-icon {
        font-size: 1.55rem;
        margin-bottom: 6px
    }

    .metric-card span {
        color: var(--muted);
        font-size: .9rem
    }

    .metric-card strong {
        font-size: 1.8rem;
        line-height: 1.2;
        color: var(--navy)
    }

.section-heading {
    margin-bottom: 20px
}

    .section-heading h2 {
        font-family: 'Playfair Display',Georgia,serif;
        margin: 5px 0 0;
        font-size: 1.7rem
    }

.module-card {
    display: flex;
    flex-direction: column;
    position: relative;
    padding: 25px;
    min-height: 175px;
    text-decoration: none;
    color: var(--ink);
    transition: transform .2s,box-shadow .2s
}

    .module-card:hover, .book-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 16px 40px rgba(29,44,68,.12);
        color: var(--ink)
    }

.module-icon {
    font-size: 1.7rem;
    margin-bottom: 12px
}

.module-card strong {
    font-size: 1.13rem
}

.module-card small {
    color: var(--muted);
    margin-top: 5px
}

.module-arrow {
    position: absolute;
    right: 23px;
    top: 23px;
    font-size: 1.3rem;
    color: #9ca9b9
}

.book-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    text-decoration: none;
    color: var(--ink);
    transition: transform .2s,box-shadow .2s
}

    .book-card > img, .book-placeholder {
        height: 190px;
        width: 100%;
        object-fit: contain;
        background: #eef2f6;
        padding: 15px
    }

.book-placeholder {
    display: grid;
    place-items: center;
    font-size: 3.8rem
}

.book-card-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 7px;
    flex: 1
}

    .book-card-body strong {
        font-size: 1.04rem
    }

    .book-card-body small {
        color: var(--muted)
    }

.book-type {
    color: #3566a2;
    font-size: .73rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em
}

.empty-state {
    padding: 35px;
    border-radius: 14px;
    border: 1px dashed #bfc9d5;
    text-align: center;
    background: #fff
}

main .container.py-4 {
    max-width: none;
    padding: 0 !important
}

    main .container.py-4 > h1, main .container.py-4 > .d-flex h1 {
        font-family: 'Playfair Display',Georgia,serif;
        font-size: 2.2rem;
        margin: 0
    }

    main .container.py-4 > .d-flex:first-child {
        margin: 4px 0 24px !important
    }

        main .container.py-4 > .d-flex:first-child:has(h1) {
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border)
        }

    main .container.py-4 > .table-responsive {
        background: #fff;
        border: 1px solid var(--border);
        border-radius: 14px;
        box-shadow: var(--shadow);
        overflow-x: auto
    }

.table {
    margin-bottom: 0
}

    .table > thead {
        --bs-table-bg: #f0f4f8;
        color: #45546b
    }

        .table > thead th {
            font-size: .78rem;
            text-transform: uppercase;
            letter-spacing: .04em;
            font-weight: 700;
            white-space: nowrap;
            border-bottom: 1px solid var(--border);
            padding: 16px
        }

    .table > tbody td {
        padding: 16px;
        vertical-align: middle
    }

    .table > tbody tr:last-child td {
        border-bottom: 0
    }

.table-striped > tbody > tr:nth-of-type(odd) > * {
    --bs-table-bg-type: #fafbfd
}

.table a {
    font-weight: 600;
    text-decoration: none
}

    .table a:hover {
        text-decoration: underline
    }

main form.d-flex.gap-2.mb-3 {
    background: #fff;
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 14px;
    box-shadow: var(--shadow);
    margin-bottom: 20px !important
}

main form.col-lg-7 {
    max-width: 780px;
    width: 100%;
    background: #fff;
    padding: clamp(22px,4vw,42px);
    border: 1px solid var(--border);
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-top: 24px
}

    main form.col-lg-7 .mb-3 {
        margin-bottom: 22px !important
    }

.form-label {
    font-weight: 600;
    font-size: .9rem
}

.form-control, .form-select {
    border-radius: 9px;
    border-color: #d9e1eb;
    min-height: 44px
}

    .form-control:focus, .form-select:focus {
        border-color: #7da8df;
        box-shadow: 0 0 0 .2rem rgba(42,110,194,.12)
    }

.btn {
    border-radius: 9px;
    font-weight: 600
}

.btn-primary {
    --bs-btn-bg: #2564bd;
    --bs-btn-border-color: #2564bd;
    --bs-btn-hover-bg: #1d5099;
    --bs-btn-hover-border-color: #1d5099
}

.card {
    overflow: hidden
}

.card-body {
    padding: 22px
}

dl.row dt {
    color: var(--muted)
}

.badge {
    border-radius: 8px
}

@media(max-width:768px) {
    .page-shell {
        width: calc(100% - 28px)
    }

    .site-header .navbar {
        min-height: 65px
    }

    .library-hero {
        min-height: 290px
    }

    .library-hero-content {
        padding: 35px 25px
    }

    .metric-card {
        min-height: 125px;
        padding: 16px
    }

        .metric-card strong {
            font-size: 1.45rem
        }

    main form.d-flex.gap-2.mb-3 {
        flex-wrap: wrap
    }

    .navbar-brand {
        font-size: 1.1rem
    }
}

.detail-panel {
    max-width: 850px
}

    .detail-panel dt {
        color: var(--muted);
        font-weight: 600
    }

    .detail-panel dd {
        font-weight: 500;
        border-bottom: 1px solid var(--border);
        padding-bottom: 12px;
        overflow-wrap: anywhere
    }