/* ============================================
   CREAM PAPER — project page
   Locked 2026-05-31. See memory: project_cream_paper_typography,
   feedback_project_page_structure.
   Paper reading column: 880px. Strip all chrome.
   ============================================ */

:root {
    /* Backgrounds */
    --paper:        #f3ece0;
    --paper-card:   #f9f3e6;
    --paper-sunk:   #ece4d4;

    /* Ink */
    --ink:          #1d1a16;
    --ink-muted:    #6b6359;
    --ink-faint:    #8e857a;

    /* Lines */
    --rule:         #d6cdb9;
    --rule-strong:  #b8ad96;

    /* Accent — warm gold */
    --accent:       #b18639;
    --accent-soft:  rgba(177, 134, 57, 0.22);

    /* Tag pills — warm neutral on cream. Locked 2026-06-01 per Rishi. */
    --tag-bg:       var(--paper-sunk);
    --tag-ink:      var(--ink-muted);

    /* Fonts */
    --font-serif:   'EB Garamond', Georgia, 'Times New Roman', serif;
    --font-sans:    'Inter Tight', system-ui, -apple-system, sans-serif;

    /* Type scale */
    --text-eyebrow: 12px;
    --text-small:   14px;
    --text-body:    17px;
    --text-h-sub:   20px;
    --text-h-sec:   26px;
    --text-title:   56px;

    /* Layout */
    --col-max:      880px;
    --gutter:       32px;
}

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

html {
    scroll-behavior: smooth;
    background: var(--paper);
}

body {
    font-family: var(--font-serif);
    font-size: var(--text-body);
    line-height: 1.65;
    color: var(--ink);
    background: var(--paper);
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

::selection { background: var(--accent-soft); color: var(--ink); }
::-moz-selection { background: var(--accent-soft); color: var(--ink); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--rule-strong); border-radius: 5px; border: 2px solid var(--paper); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-faint); }

/* Particles layer sits behind content */
#particles-js {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

/* ============================================
   PAGE WRAP
   ============================================ */

.container {
    max-width: var(--col-max);
    margin: 0 auto;
    padding: 56px var(--gutter) 96px;
    position: relative;
    z-index: 1;
}

/* ============================================
   BACK LINK (bracket style)
   ============================================ */

.back-link {
    font-family: var(--font-sans);
    font-size: var(--text-small);
    color: var(--ink-muted);
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: color 0.15s ease;
    display: inline-block;
}
.back-link:hover { color: var(--accent); }

/* ============================================
   HEADER BLOCK (eyebrow, title, chips, subtitle)
   ============================================ */

.eyebrow {
    font-family: var(--font-sans);
    font-size: var(--text-eyebrow);
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-faint);
    margin: 48px 0 18px;
}

h1.title {
    font-family: var(--font-sans);
    font-size: var(--text-title);
    font-weight: 800;
    line-height: 1.04;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin: 0 0 22px;
}
h1.title .accent {
    background-image: linear-gradient(transparent 64%, var(--accent-soft) 64%, var(--accent-soft) 92%, transparent 92%);
    padding: 0 2px;
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 22px; }
.chip {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.02em;
    background: var(--tag-bg);
    color: var(--tag-ink);
    padding: 5px 12px;
    border-radius: 999px;
}

/* Subtitle — NOT italic. Per memory project_cream_paper_typography. */
.subtitle {
    font-family: var(--font-serif);
    font-size: 21px;
    line-height: 1.5;
    color: var(--ink);
    margin: 0 0 28px;
    max-width: 640px;
}

/* ============================================
   SECTION HEADINGS
   ============================================ */

h2.section {
    font-family: var(--font-serif);
    font-size: var(--text-h-sec);
    font-weight: 600;
    color: var(--ink);
    margin: 56px 0 14px;
    letter-spacing: -0.005em;
}

h3.subsection {
    font-family: var(--font-serif);
    font-size: var(--text-h-sub);
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 8px;
}

/* ============================================
   BODY TEXT, BULLETS, INLINE LINKS
   ============================================ */

p { margin: 0 0 14px; }
p + p { margin-top: 0; }

ul.body-list, ol.body-list { margin: 0 0 14px; padding-left: 22px; }
ul.body-list li, ol.body-list li { margin-bottom: 10px; }
ul.body-list li:last-child, ol.body-list li:last-child { margin-bottom: 0; }

strong { font-weight: 600; color: var(--ink); }

a.inline {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    transition: color 0.15s ease;
}
a.inline:hover { color: var(--ink); }

/* Inline code in body (kept minimal; not a chrome block) */
code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.92em;
    background: var(--paper-sunk);
    color: var(--ink);
    padding: 1px 6px;
    border-radius: 3px;
}

/* Block citation (e.g., BibTeX) — single paper-card */
pre {
    background: var(--paper-card);
    border: 1px solid var(--rule);
    border-radius: 4px;
    padding: 16px 18px;
    overflow-x: auto;
    margin: 18px 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
    line-height: 1.55;
    color: var(--ink);
}
pre code { background: transparent; padding: 0; font-size: inherit; }

/* ============================================
   FIGURES (images, videos, charts)
   ============================================ */

figure { margin: 28px 0; }

.figure-card {
    background: var(--paper-card);
    border: 1px solid var(--rule);
    border-radius: 4px;
    padding: 18px;
    text-align: center;
    overflow: hidden;
}

.figure-card img,
.figure-card video,
.figure-card iframe {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 2px;
    background: var(--paper-sunk);
}

.figure-card iframe { aspect-ratio: 16 / 9; }

figcaption {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: var(--text-small);
    color: var(--ink-muted);
    text-align: center;
    margin-top: 10px;
}

/* ============================================
   RESULTS TABLE
   ============================================ */

table.results {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0 14px;
    font-family: var(--font-serif);
    font-size: var(--text-small);
}
table.results th,
table.results td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--rule);
}
table.results th {
    font-family: var(--font-sans);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 11px;
    color: var(--ink-muted);
    border-bottom: 1px solid var(--rule-strong);
}
table.results td.num { font-variant-numeric: tabular-nums; }
table.results tr:last-child td { border-bottom: none; }

/* ============================================
   SEPARATOR
   ============================================ */

hr.sep {
    border: none;
    border-top: 1px solid var(--rule);
    margin: 56px 0 0;
}

/* ============================================
   PAGE TRANSITION OVERLAY (cream)
   ============================================ */

.page-transition-overlay {
    position: fixed;
    inset: 0;
    background: var(--paper);
    z-index: 99999;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    :root { --text-title: 48px; }
    .container { padding: 40px 24px 80px; }
}

@media (max-width: 768px) {
    :root {
        --text-title: 38px;
        --text-h-sec: 22px;
        --text-h-sub: 18px;
    }
    .container { padding: 32px 20px 64px; }
    .eyebrow { margin: 32px 0 14px; }
    .subtitle { font-size: 18px; }
    h2.section { margin: 44px 0 12px; }
    h3.subsection { margin: 22px 0 6px; }
    .figure-card { padding: 12px; }
}

@media (max-width: 480px) {
    :root { --text-title: 32px; }
    .subtitle { font-size: 17px; }
    table.results { font-size: 13px; }
    table.results th, table.results td { padding: 8px 10px; }
}