:root {
    --parchment-base: #0d0b09;
    --parchment-dark: #15120e;
    --spine-leather: #080605;
    --ink-gall: #dfd5c2;
    --ink-faded: #948772;
    --rubric-red: #c43225;
    --gilt-gold: #c89d46;
    --border-rule: #2e261d;

    --font-title: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'EB Garamond', Georgia, serif;
    --font-init: 'Cinzel Decorative', serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--parchment-base);
    background-image:
        radial-gradient(circle at 60% 15%, rgba(196, 50, 37, 0.04) 0%, transparent 55%),
        radial-gradient(circle at 30% 80%, rgba(200, 157, 70, 0.04) 0%, transparent 60%);
    color: var(--ink-gall);
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.72;
    display: flex;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* Leather-bound left spine */
.codex-spine {
    width: 310px;
    background-color: var(--spine-leather);
    color: #dfd5c2;
    border-right: 4px double #47361b;
    padding: 44px 32px;
    position: fixed;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.spine-rubric {
    font-family: var(--font-title);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--gilt-gold);
    border-bottom: 1px solid var(--border-rule);
    padding-bottom: 10px;
    margin-bottom: 18px;
    display: block;
}

.spine-title {
    display: block;
    font-family: var(--font-title);
    font-size: 2.15rem;
    font-weight: 700;
    color: #f2e9d8;
    text-decoration: none;
    line-height: 1.1;
    margin-bottom: 14px;
}

.spine-title:hover {
    color: var(--gilt-gold);
}

.spine-sub {
    font-size: 0.92rem;
    font-style: italic;
    color: var(--ink-faded);
    line-height: 1.55;
    margin-bottom: 36px;
}

.toc-heading {
    font-family: var(--font-title);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--ink-faded);
    margin-bottom: 10px;
    display: block;
}

.folio-nav {
    list-style: none;
    border-top: 1px solid var(--border-rule);
}

.folio-nav li {
    border-bottom: 1px solid #1f1913;
}

.folio-nav a {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 12px 0;
    color: #c9beaa;
    text-decoration: none;
    font-family: var(--font-title);
    font-size: 1.12rem;
    font-weight: 500;
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.folio-num {
    font-size: 0.85rem;
    font-style: italic;
    color: var(--gilt-gold);
}

.folio-nav a:hover,
.folio-nav a.active {
    color: #ffffff;
    padding-left: 6px;
}

.folio-nav a.active .folio-num {
    color: var(--rubric-red);
    font-weight: 700;
}

.spine-colophon {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: 1px solid var(--border-rule);
    padding-top: 16px;
    font-size: 0.8rem;
    color: #695d4d;
}

.motto-link {
    font-family: var(--font-title);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--gilt-gold);
    text-decoration: none;
    transition: color 0.2s ease;
}

.motto-link:hover {
    color: #f2e9d8;
}

/* Main Nocturnal Reading Area */
.parchment-page {
    margin-left: 310px;
    flex: 1;
    padding: 64px 7% 80px;
    max-width: 1020px;
}

.rubric {
    font-family: var(--font-title);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--rubric-red);
    display: block;
    margin-bottom: 6px;
}

/* Folio Header */
.folio-header {
    border-top: 2px solid var(--gilt-gold);
    border-bottom: 3px double var(--border-rule);
    padding: 22px 0 28px;
    margin-bottom: 44px;
}

.folio-marginalia {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-family: var(--font-title);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-faded);
    border-bottom: 1px solid var(--border-rule);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.folio-header h1 {
    font-family: var(--font-title);
    font-size: clamp(2.3rem, 4vw, 3.2rem);
    font-weight: 700;
    color: #f2e9d8;
    line-height: 1.08;
    margin-bottom: 14px;
}

.folio-incipit {
    font-size: 1.15rem;
    font-style: italic;
    color: var(--ink-faded);
    max-width: 62ch;
}

/* Illuminated Initial Dropcap */
.illuminated-init::first-letter {
    font-family: var(--font-init);
    font-size: 3.3rem;
    float: left;
    line-height: 0.88;
    padding: 6px 12px;
    margin-right: 14px;
    margin-top: 4px;
    color: var(--gilt-gold);
    background-color: #1a1510;
    border: 1px solid #57411d;
    box-shadow: inset 0 0 0 2px #0d0b09;
}

.chronicle-overview {
    margin-bottom: 44px;
    padding-bottom: 36px;
    border-bottom: 1px solid var(--border-rule);
}

.chronicle-overview p {
    max-width: 66ch;
}

/* Overview Folio Entries */
.folio-index-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.folio-card {
    background-color: var(--parchment-dark);
    border: 1px solid var(--border-rule);
    border-left: 4px solid var(--rubric-red);
    padding: 28px 32px;
}

.folio-card h2 {
    font-family: var(--font-title);
    font-size: 1.75rem;
    margin-bottom: 10px;
}

.folio-card h2 a {
    color: #f2e9d8;
    text-decoration: none;
}

.folio-card h2 a:hover {
    color: var(--gilt-gold);
}

.folio-card p {
    color: #cfc4b0;
    margin-bottom: 18px;
    max-width: 64ch;
}

.folio-card-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 14px;
    border-top: 1px solid var(--border-rule);
}

.marginal-gloss {
    font-style: italic;
    font-size: 0.9rem;
    color: var(--ink-faded);
}

.wax-seal-link {
    display: inline-block;
    font-family: var(--font-title);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-decoration: none;
    color: #f5ece0;
    background-color: #7d1b12;
    border: 1px solid var(--rubric-red);
    padding: 8px 18px;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.wax-seal-link:hover {
    background-color: var(--rubric-red);
    border-color: var(--gilt-gold);
    color: #ffffff;
}

/* Detail Folio Ledger & Prose */
.registry-ledger {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 38px;
    background-color: var(--parchment-dark);
    font-size: 0.92rem;
}

.registry-ledger td {
    border: 1px solid var(--border-rule);
    padding: 10px 16px;
}

.registry-ledger td.k {
    font-family: var(--font-title);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
    color: var(--gilt-gold);
    width: 18%;
}

.registry-ledger td.v {
    color: #f2e9d8;
    font-weight: 600;
}

.manuscript-prose p {
    margin-bottom: 22px;
    max-width: 66ch;
}

.manuscript-prose h2 {
    font-family: var(--font-title);
    font-size: 1.8rem;
    color: #f2e9d8;
    margin: 36px 0 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-rule);
}

.rubric-quote {
    margin: 34px 0;
    padding: 20px 28px;
    border-top: 2px solid var(--rubric-red);
    border-bottom: 2px solid var(--rubric-red);
    background-color: var(--parchment-dark);
    font-family: var(--font-title);
    font-size: 1.3rem;
    font-style: italic;
    color: #f2e9d8;
}

.rubric-quote cite {
    display: block;
    margin-top: 8px;
    font-size: 0.8rem;
    font-style: normal;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gilt-gold);
}

.scribe-gloss {
    background-color: var(--parchment-dark);
    border: 3px double #57411d;
    padding: 22px 28px;
    margin-top: 38px;
}

.scribe-gloss p {
    margin-bottom: 0;
}

/* 404 Erratum */
.erratum-wrap {
    margin: auto;
    padding: 24px;
}

.erratum-leaf {
    max-width: 540px;
    background-color: var(--parchment-dark);
    border: 3px double var(--rubric-red);
    padding: 44px;
    text-align: center;
}

.erratum-leaf h1 {
    font-family: var(--font-title);
    font-size: 2.6rem;
    color: #f2e9d8;
    margin-bottom: 12px;
}

.erratum-leaf p {
    color: var(--ink-faded);
    font-style: italic;
    margin-bottom: 24px;
}

/* Manuscript Footer */
.manuscript-footer {
    margin-top: 64px;
    padding-top: 20px;
    border-top: 1px solid var(--border-rule);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-family: var(--font-title);
    font-size: 0.92rem;
    color: var(--ink-faded);
}

.manuscript-footer a {
    color: var(--gilt-gold);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
}

@media (max-width: 900px) {
    body {
        flex-direction: column;
    }
    .codex-spine {
        position: relative;
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 4px double #47361b;
        padding: 28px 20px;
    }
    .parchment-page {
        margin-left: 0;
        padding: 36px 20px 60px;
    }
}