/* KUNI Source - Shared Styles */

:root {
    --color-ink: #1a1a18;
    --color-paper: #f7f5f0;
    --color-stone: #6b6860;
    --color-mist: #e8e5de;
    --color-faint: #d4d0c8;
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Spectral', serif;
}

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

html {
    font-size: 17px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-paper);
    color: var(--color-ink);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1.5rem 2rem;
    background-color: var(--color-paper);
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-header.scrolled {
    border-bottom-color: var(--color-mist);
}

.site-header a {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-stone);
    text-decoration: none;
    transition: color 0.3s ease;
}

.site-header a:hover {
    color: var(--color-ink);
}

.header-nav {
    display: flex;
    gap: 2rem;
}

/* Document container */
.document {
    max-width: 680px;
    margin: 0 auto;
    padding: 8rem 2rem 6rem;
}

/* Document header */
.document-header {
    text-align: center;
    margin-bottom: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--color-mist);
}

.document-header h1 {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-ink);
    margin-bottom: 0.5rem;
}

.document-header .subtitle {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 400;
    font-style: italic;
    color: var(--color-stone);
    letter-spacing: 0.05em;
}

.document-header .full-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 300;
    font-style: italic;
    color: var(--color-stone);
    margin-top: 2rem;
    line-height: 1.6;
    text-align: center;
}

/* Act header - for individual act pages */
.act-header {
    text-align: center;
    margin-bottom: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--color-mist);
}

.act-header h1 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-stone);
    margin-bottom: 0.5rem;
}

.act-header h2 {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 300;
    letter-spacing: 0.08em;
    color: var(--color-ink);
}

/* Section styling */
.section {
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-mist);
    letter-spacing: 0.05em;
}

.subsection-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--color-ink);
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.03em;
}

.subsubsection-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 500;
    font-style: italic;
    color: var(--color-ink);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

/* Paragraphs */
p {
    font-size: 1rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    text-align: left;
}

/* Orientation note - special styling */
.orientation-note {
    background-color: var(--color-mist);
    padding: 2rem 2.5rem;
    margin-bottom: 4rem;
    border-left: 3px solid var(--color-stone);
}

.orientation-note h2 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--color-ink);
    margin-bottom: 1.5rem;
}

.orientation-note p {
    font-size: 0.95rem;
    margin-bottom: 1.2rem;
}

.orientation-note p:last-child {
    margin-bottom: 0;
}

/* Key terms */
.key-terms {
    margin-bottom: 4rem;
}

.term {
    margin-bottom: 1.5rem;
}

.term strong {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
}

.term p {
    margin-bottom: 0;
    margin-top: 0.3rem;
}

/* Lists */
ul {
    list-style: none;
    margin-bottom: 1.5rem;
    padding-left: 0;
}

ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 300;
}

ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 6px;
    height: 1px;
    background-color: var(--color-stone);
}

/* Table of contents */
.toc {
    margin: 3rem 0 4rem;
    padding: 2.5rem;
    border: 1px solid var(--color-mist);
}

.toc h2 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-stone);
    margin-bottom: 2rem;
    text-align: center;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list li {
    padding-left: 0;
    margin-bottom: 1rem;
    text-align: center;
}

.toc-list li::before {
    display: none;
}

.toc-list a {
    font-family: var(--font-display);
    font-size: 1.05rem;
    color: var(--color-ink);
    text-decoration: none;
    transition: color 0.3s ease;
    letter-spacing: 0.02em;
}

.toc-list a:hover {
    color: var(--color-stone);
}

.toc-list .act-number {
    font-size: 0.85rem;
    color: var(--color-stone);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.2rem;
}

/* Blockquote for emphasis */
.emphasis {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-style: italic;
    color: var(--color-ink);
    text-align: center;
    padding: 2rem 1rem;
    margin: 2.5rem 0;
    border-top: 1px solid var(--color-mist);
    border-bottom: 1px solid var(--color-mist);
    line-height: 1.7;
}

/* Navigation between acts */
.act-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-mist);
}

.act-nav a {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--color-stone);
    text-decoration: none;
    transition: color 0.3s ease;
    letter-spacing: 0.05em;
}

.act-nav a:hover {
    color: var(--color-ink);
}

.act-nav .prev::before {
    content: '← ';
}

.act-nav .next::after {
    content: ' →';
}

.act-nav .spacer {
    flex: 1;
}

/* Document footer */
.document-footer {
    margin-top: 5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-mist);
    text-align: center;
}

.document-footer p {
    font-size: 0.8rem;
    color: var(--color-stone);
    font-style: italic;
    margin-bottom: 0.5rem;
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 40px;
    height: 40px;
    background-color: var(--color-paper);
    border: 1px solid var(--color-mist);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--color-stone);
    font-size: 1.2rem;
    opacity: 0;
    transition: opacity 0.3s ease, border-color 0.3s ease;
    pointer-events: none;
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    border-color: var(--color-stone);
}

/* Responsive */
@media (max-width: 700px) {
    html {
        font-size: 16px;
    }

    .document {
        padding: 7rem 1.5rem 4rem;
    }

    .document-header h1,
    .act-header h2 {
        font-size: 1.8rem;
        letter-spacing: 0.1em;
    }

    .orientation-note {
        padding: 1.5rem;
        margin-left: -0.5rem;
        margin-right: -0.5rem;
    }

    .site-header {
        padding: 1rem 1.5rem;
    }

    .header-nav {
        gap: 1rem;
    }

    .toc {
        padding: 1.5rem;
    }

    .act-nav {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Animation */
.document {
    opacity: 0;
    animation: emerge 1.5s ease-out 0.2s forwards;
}

@keyframes emerge {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}