/* ==========================================================================
   lrx.wiki -- License and Right eXchange Wiki
   Stylesheet: classic serif revival book aesthetic
   ========================================================================== */

:root {
    --color-page: #fffdf8;
    --color-ink: #2a1e10;
    --color-accent: #8b1a1a;
    --color-border: #d4cfc4;
    --color-sidebar: #f8f5ef;
    --color-footnote: #6a6050;
    --color-quote-bg: #f5f0e8;

    --serif: "EB Garamond", Garamond, "Times New Roman", Times, serif;
    --sans: "Source Sans 3", "Helvetica Neue", Arial, sans-serif;

    --sidebar-width: 260px;
    --content-max: 700px;
}

* {
    box-sizing: border-box;
}

html {
    background: var(--color-page);
    color: var(--color-ink);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    background: var(--color-page);
    color: var(--color-ink);
    font-family: var(--serif);
    font-size: 1.05rem;
    line-height: 1.85;
    font-feature-settings: "kern", "liga", "onum", "calt";
}

/* ==========================================================================
   Book layout
   ========================================================================== */

.book {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100vh;
}

/* ==========================================================================
   Sidebar (Table of Contents)
   ========================================================================== */

.sidebar {
    position: sticky;
    top: 0;
    align-self: start;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-sidebar);
    border-right: 1px solid var(--color-border);
    padding: 2rem 1.25rem 2rem 1.5rem;
    overflow-y: auto;
    font-family: var(--sans);
    font-size: 0.85rem;
    color: var(--color-footnote);
}

.sidebar-header {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 1.35rem;
    color: var(--color-ink);
    letter-spacing: 0.02em;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0.5rem;
    font-feature-settings: "kern", "liga";
}

.sidebar-mark-sep {
    color: var(--color-accent);
}

.sidebar-meta {
    font-family: var(--sans);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-footnote);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    padding-top: 0.4rem;
}

.sidebar-meta-label {
    color: var(--color-footnote);
}

.sidebar-meta-value {
    color: var(--color-accent);
    font-weight: 500;
    letter-spacing: 0.1em;
}

.sidebar-nav {
    margin-bottom: 2rem;
}

.nav-section {
    margin-bottom: 1.6rem;
}

.nav-section-title {
    font-family: var(--sans);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-ink);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 0.6rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin: 0;
    padding: 0;
}

.nav-link {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.32rem 0;
    color: var(--color-footnote);
    text-decoration: none;
    font-family: var(--sans);
    font-size: 0.85rem;
    font-weight: 400;
    line-height: 1.4;
    transition: color 0.18s ease;
    border-left: 2px solid transparent;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
}

.nav-link:hover {
    color: var(--color-accent);
}

.nav-link.active {
    color: var(--color-accent);
    font-weight: 500;
    border-left-color: var(--color-accent);
}

.nav-roman {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-accent);
    min-width: 1.7em;
    display: inline-block;
    font-variant-numeric: oldstyle-nums;
}

.nav-text {
    flex: 1;
}

.sidebar-footnote {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    font-family: var(--sans);
    font-size: 0.75rem;
    line-height: 1.55;
    color: var(--color-footnote);
    font-style: italic;
}

.sidebar-footnote p {
    margin: 0;
}

/* ==========================================================================
   Main content area
   ========================================================================== */

.content {
    max-width: 100%;
    padding: 0;
    background: var(--color-page);
}

.content > section,
.content > .ornamental-rule {
    max-width: var(--content-max);
    margin: 0 auto;
    padding-left: 3rem;
    padding-right: 3rem;
}

.content > section {
    padding-top: 3rem;
    padding-bottom: 3rem;
}

/* ==========================================================================
   Title page
   ========================================================================== */

.title-page {
    text-align: center;
    padding-top: 18vh !important;
    padding-bottom: 16vh !important;
}

.title-pretitle {
    font-family: var(--sans);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.32em;
    color: var(--color-footnote);
    margin: 0 0 1.5rem 0;
    font-weight: 500;
}

.title-domain {
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    color: var(--color-ink);
    margin: 0 0 0.5rem 0;
    letter-spacing: 0.01em;
    line-height: 1.1;
    font-feature-settings: "kern", "liga", "onum";
}

.title-expansion {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.25rem;
    color: var(--color-ink);
    opacity: 0.85;
    margin: 0 0 1.8rem 0;
    font-weight: 400;
}

.title-subtitle {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--color-ink);
    opacity: 0.78;
    margin: 1.5rem auto;
    max-width: 32em;
    font-weight: 400;
}

.title-edition {
    font-family: var(--sans);
    font-size: 0.78rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin: 2rem 0 1rem 0;
    font-weight: 500;
}

.title-imprint {
    font-family: var(--serif);
    font-style: italic;
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--color-footnote);
    margin: 1rem 0 0 0;
}

/* ==========================================================================
   Ornamental rule (double-line + diamond)
   ========================================================================== */

.ornamental-rule {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 0;
    margin: 0.5rem auto;
    position: relative;
}

.ornamental-rule::before,
.ornamental-rule::after {
    /* extra thin line for the double-rule effect */
}

.rule-line {
    width: 80px;
    height: 1px;
    background: var(--color-border);
    position: relative;
}

/* the second of the two lines for the double-rule */
.rule-line::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 3px;
    height: 1px;
    background: var(--color-border);
}

.rule-diamond {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    transform: rotate(45deg);
    flex: 0 0 auto;
}

.section-rule {
    padding: 2rem 0;
}

/* ==========================================================================
   Chapters and headings
   ========================================================================== */

.chapter,
.back-matter {
    position: relative;
}

.chapter-header {
    margin-bottom: 2.2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1.2rem;
}

.chapter-roman {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 2rem;
    color: var(--color-accent);
    line-height: 1;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
    font-variant: small-caps;
}

.chapter-title {
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: var(--color-ink);
    margin: 0;
    line-height: 1.15;
    font-variant: small-caps;
    letter-spacing: 0.04em;
    font-feature-settings: "kern", "liga", "onum", "smcp";
}

.chapter-header--prelim .chapter-title {
    font-style: italic;
    font-variant: normal;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.section-title {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-ink);
    margin: 2.5rem 0 1rem 0;
    line-height: 1.3;
    letter-spacing: 0.01em;
    display: flex;
    align-items: baseline;
    gap: 0.7rem;
    font-feature-settings: "kern", "liga", "onum";
}

.section-number {
    font-family: var(--serif);
    color: var(--color-accent);
    font-weight: 600;
    font-size: 1rem;
    min-width: 2.4em;
    font-variant-numeric: oldstyle-nums;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Body paragraphs
   ========================================================================== */

.chapter p,
.back-matter p {
    margin: 0 0 1.1rem 0;
    text-align: justify;
    hyphens: auto;
    -webkit-hyphens: auto;
    font-feature-settings: "kern", "liga", "onum";
}

.chapter em,
.back-matter em {
    font-style: italic;
    color: var(--color-ink);
}

.chapter a:not(.footnote-back):not(.footnote-ref a),
.back-matter a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px dotted var(--color-accent);
    transition: border-bottom-style 0.2s ease;
}

.chapter a:hover,
.back-matter a:hover {
    border-bottom-style: solid;
}

/* ==========================================================================
   Drop cap (book opening)
   ========================================================================== */

.dropcap-paragraph p {
    text-indent: 0;
}

.dropcap {
    float: left;
    font-family: var(--serif);
    font-weight: 600;
    font-size: 4.2rem;
    line-height: 0.85;
    color: var(--color-accent);
    margin: 0.18rem 0.55rem 0 0;
    padding: 0;
    font-feature-settings: "kern", "liga";
}

/* ==========================================================================
   Pull quotes
   ========================================================================== */

.pullquote {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.3rem;
    text-align: center;
    padding: 2rem 3rem;
    color: rgba(42, 30, 16, 0.7);
    margin: 2.5rem 0;
    line-height: 1.5;
    border: none;
    position: relative;
    background: transparent;
    font-feature-settings: "kern", "liga", "onum";
}

.pullquote::before,
.pullquote::after {
    content: "";
    display: block;
    width: 40px;
    height: 1px;
    background: var(--color-border);
    margin: 0.8rem auto;
}

.pullquote p {
    margin: 0;
    text-align: center;
    text-indent: 0;
    hyphens: none;
}

/* ==========================================================================
   Block quotes (for indented text within sections)
   ========================================================================== */

blockquote:not(.pullquote) {
    background: var(--color-quote-bg);
    border-left: 3px solid var(--color-accent);
    padding: 0.8rem 1.4rem;
    margin: 1.4rem 0;
    font-style: italic;
    color: var(--color-ink);
    font-family: var(--serif);
}

/* ==========================================================================
   Footnotes
   ========================================================================== */

.footnote-ref {
    font-family: var(--serif);
    font-size: 0.7rem;
    color: var(--color-accent);
    vertical-align: super;
    line-height: 0;
    font-feature-settings: "kern", "liga", "lnum";
}

.footnote-ref a {
    color: var(--color-accent);
    text-decoration: none;
    border: none !important;
    padding: 0 0.1em;
}

.footnote-ref a:hover {
    text-decoration: underline;
}

.footnotes {
    margin-top: 2.5rem;
    padding-top: 0.5rem;
    position: relative;
    font-family: var(--sans);
    font-size: 0.8rem;
    color: var(--color-footnote);
    line-height: 1.6;
}

.footnotes::before {
    content: "";
    display: block;
    width: 30%;
    height: 1px;
    background: var(--color-border);
    margin-bottom: 1rem;
}

.footnotes ol {
    margin: 0;
    padding-left: 1.4rem;
}

.footnotes li {
    margin-bottom: 0.45rem;
    padding-left: 0.2rem;
}

.footnotes li::marker {
    color: var(--color-accent);
    font-family: var(--serif);
    font-weight: 600;
}

.footnote-back {
    color: var(--color-accent);
    text-decoration: none;
    margin-left: 0.3rem;
    border: none !important;
    font-size: 0.9rem;
}

.footnote-back:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Index (back matter)
   ========================================================================== */

.back-intro {
    font-style: italic;
    color: var(--color-footnote);
    margin-bottom: 2rem !important;
}

.index-grid {
    column-count: 2;
    column-gap: 2.5rem;
    column-rule: 1px solid var(--color-border);
    margin-top: 1.5rem;
}

.index-letter {
    break-inside: avoid;
    margin-bottom: 1.2rem;
    display: block;
}

.index-letter-heading {
    font-family: var(--serif);
    font-weight: 600;
    font-variant: small-caps;
    font-size: 1.05rem;
    color: var(--color-accent);
    margin: 0 0 0.35rem 0;
    letter-spacing: 0.1em;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.2rem;
}

.index-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-family: var(--serif);
    font-size: 0.95rem;
    line-height: 1.5;
}

.index-list li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.12rem 0;
    color: var(--color-ink);
    border-bottom: 1px dotted transparent;
}

.index-ref {
    font-family: var(--sans);
    font-size: 0.75rem;
    color: var(--color-footnote);
    font-variant-numeric: oldstyle-nums;
    white-space: nowrap;
    letter-spacing: 0.02em;
}

/* ==========================================================================
   Colophon
   ========================================================================== */

.colophon p {
    text-align: center;
    max-width: 36em;
    margin-left: auto;
    margin-right: auto;
}

.colophon-stamp {
    font-family: var(--sans);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.28em;
    color: var(--color-footnote);
    margin: 2.5rem 0 1rem 0 !important;
    text-align: center;
}

.colophon-finis {
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.3rem;
    color: var(--color-accent);
    text-align: center;
    margin: 2rem 0 4rem 0 !important;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Sidebar toggle (mobile)
   ========================================================================== */

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    width: 42px;
    height: 42px;
    background: var(--color-sidebar);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    cursor: pointer;
    z-index: 100;
    padding: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: background 0.2s ease;
}

.sidebar-toggle:hover {
    background: var(--color-quote-bg);
}

.toggle-bar {
    width: 20px;
    height: 1px;
    background: var(--color-ink);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.sidebar-toggle.is-open .toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.sidebar-toggle.is-open .toggle-bar:nth-child(2) {
    opacity: 0;
}

.sidebar-toggle.is-open .toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* ==========================================================================
   Reading-progress accent (subtle)
   ========================================================================== */

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background: var(--color-accent);
    z-index: 50;
    transition: width 0.12s ease-out;
    opacity: 0.85;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 980px) {
    .book {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        width: 280px;
        transform: translateX(-100%);
        transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 90;
        box-shadow: 2px 0 24px rgba(42, 30, 16, 0.08);
    }

    .sidebar.is-open {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: flex;
    }

    .content > section,
    .content > .ornamental-rule {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .content > section {
        padding-top: 2rem;
        padding-bottom: 2rem;
    }

    .title-page {
        padding-top: 12vh !important;
    }

    .index-grid {
        column-count: 1;
    }
}

@media (max-width: 560px) {
    body {
        font-size: 1rem;
    }

    .pullquote {
        padding: 1.5rem 1rem;
        font-size: 1.15rem;
    }

    .dropcap {
        font-size: 3.4rem;
    }

    .title-domain {
        font-size: 2rem;
    }

    .chapter p,
    .back-matter p {
        text-align: left;
    }
}