/* ============================================================================
 * taqyidat-foundation.css — ปกิณกะตำรา · تقييدات SCAFFOLD styles (light-first)
 * ----------------------------------------------------------------------------
 * Self-contained (no @import, no CDN). Our five fonts only (Rule 24): Amiri,
 * IBM Plex Sans Thai, Inter, Sarabun (+ Cinzel wordmark elsewhere). This is a
 * correct, accessible scaffold — a polished visual is a later /Design pass.
 * ==========================================================================*/

:root {
  --tq-bg: #ffffff;
  --tq-bg-2: #f6f4ef;
  --tq-heading: #1a1712;
  --tq-text: #2c2620;
  --tq-muted: #6b6357;
  --tq-faint: #8c8478;
  --tq-line: rgba(26,23,18,0.12);
  --tq-line-strong: rgba(26,23,18,0.22);
  --tq-accent: #a02a1e;
  --tq-observed: #1f6f52;   /* Observed-in-source badge */
  --tq-verdict: #8a5a12;    /* scholarly-verdict badge */
  --tq-serif: 'IBM Plex Sans Thai', 'Sarabun', system-ui, sans-serif;
  --tq-thai: 'Sarabun', system-ui, sans-serif;
  --tq-arabic: 'Amiri', 'Sarabun', serif;
  --tq-ui: 'Inter', system-ui, sans-serif;
}
html.dark-mode {
  --tq-bg: #0d0b08; --tq-bg-2: #16130e;
  --tq-heading: #ede6d7; --tq-text: #d8cfbe; --tq-muted: #9a907e; --tq-faint: #6b6357;
  --tq-line: rgba(237,230,215,0.14); --tq-line-strong: rgba(237,230,215,0.26);
  --tq-accent: #d9695f; --tq-observed: #5cc79a; --tq-verdict: #d6a44e;
}

body#taqyidat-detail, body#taqyidat-archive {
  margin: 0; background: var(--tq-bg); color: var(--tq-text);
  font-family: var(--tq-thai); line-height: 2.0; font-size: 17px;
  -webkit-text-size-adjust: 100%;
}
#taqyidat-detail [hidden], #taqyidat-archive [hidden] { display: none !important; }

.tq-shell { max-width: 820px; margin: 0 auto; padding: clamp(64px, 10vw, 104px) 20px 120px; }
.tq-breadcrumb { display: inline-block; margin-bottom: 22px; color: var(--tq-muted);
  font-family: var(--tq-ui); font-size: 14px; text-decoration: none; }
.tq-breadcrumb:hover { color: var(--tq-accent); }
.tq-breadcrumb:focus-visible { outline: 2px solid var(--tq-accent); outline-offset: 3px; }

.tq-sample-banner { margin: 0; padding: 10px 20px; text-align: center;
  background: var(--tq-bg-2); color: var(--tq-muted); border-bottom: 1px solid var(--tq-line);
  font-family: var(--tq-ui); font-size: 13.5px; }

.tq-doc-head { border-bottom: 1px solid var(--tq-line); padding-bottom: 20px; margin-bottom: 8px; }
.tq-eyebrow, .tq-arc-eyebrow { font-family: var(--tq-ui); font-size: 12px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--tq-faint); margin: 0 0 8px; }
.tq-doc-title, .tq-arc-title { font-family: var(--tq-serif); font-weight: 700; line-height: 1.3;
  color: var(--tq-heading); margin: 0 0 6px; font-size: clamp(23px, 4vw, 30px); overflow-wrap: anywhere; }
.tq-doc-sub, .tq-arc-sub { font-family: var(--tq-arabic); font-size: 20px; color: var(--tq-accent); margin: 0 0 10px; }
.tq-doc-lead, .tq-arc-intro { color: var(--tq-text); margin: 8px 0 0; max-width: 62ch; }
.tq-doc-reading { font-family: var(--tq-ui); font-size: 13px; color: var(--tq-faint); margin: 10px 0 0; }

.tq-section { margin: 34px 0; }
.tq-section h2 { font-family: var(--tq-serif); font-weight: 700; font-size: 19px; color: var(--tq-heading);
  border-bottom: 2px solid var(--tq-line-strong); padding-bottom: 6px; margin: 0 0 14px; }
.tq-section p { margin: 0 0 14px; text-align: left; word-break: break-word; }

/* Arabic quote block: byte-exact Arabic above its Thai rendering */
.tq-quote { margin: 22px 0; padding: 0; border: 0; }
/* `.tq-quote .tq-ar` (0,2,0) must out-specify `.tq-section p` (0,1,1) so the Arabic
   quote stays flush-right (RTL) and is not pulled left by the Thai-prose default. */
.tq-quote .tq-ar { font-family: var(--tq-arabic); font-size: 1.5rem; line-height: 2; text-align: right;
  color: var(--tq-heading); margin: 0 0 4px; }
.tq-ar-th { margin: 6px 0 0; color: var(--tq-text); }
.tq-ref a { color: var(--tq-accent); text-decoration: none; font-family: var(--tq-ui); }
.tq-ref a:focus-visible { outline: 2px solid var(--tq-accent); outline-offset: 2px; }

/* Manuscript folio photograph — self-hosted evidence, sits directly below its quote.
   Responsive (never overflows); the caption states provenance without overclaiming. */
.tq-ms-figure { margin: 12px 0 22px; }
.tq-ms-figure img { display: block; width: 100%; max-width: 560px; height: auto; margin: 0 auto;
  border: 1px solid var(--tq-line-strong); border-radius: 10px; background: var(--tq-bg-2); }
.tq-ms-figure figcaption { font-family: var(--tq-ui); font-size: 12.5px; line-height: 1.6;
  color: var(--tq-muted); margin: 8px auto 0; text-align: center; max-width: 62ch; }
.tq-ms-figure .tq-ms-credit { color: var(--tq-faint); }

/* Source-faithful printed or manuscript evidence embedded in the editorial flow. */
.tq-figure { margin: 18px 0 24px; max-width: 100%; overflow: hidden; }
.tq-figure img { display: block; width: auto; max-width: 100%; height: auto; max-height: 760px;
  margin: 0 auto; object-fit: contain; }
.tq-figure figcaption { font-family: var(--tq-ui); font-size: 12.5px; line-height: 1.65;
  color: var(--tq-muted); margin: 8px auto 0; text-align: center; max-width: 62ch; overflow-wrap: anywhere; }
.tq-figure-credit { color: var(--tq-faint); }

/* Attribution-graph showcase */
.tq-showcase { margin: 8px 0 0; }
.tq-diagram { width: 100%; height: auto; background: var(--tq-bg-2); border: 1px solid var(--tq-line);
  border-radius: 12px; padding: 8px; box-sizing: border-box; }
.tq-diagram .tq-node rect { fill: var(--tq-bg); stroke: var(--tq-line-strong); stroke-width: 1.5; }
.tq-diagram .tq-node-label { font-family: var(--tq-thai); font-size: 13px; fill: var(--tq-heading); }
.tq-diagram .tq-node-kind { font-family: var(--tq-ui); font-size: 10.5px; fill: var(--tq-muted); }
.tq-diagram .tq-edge line { stroke: var(--tq-line-strong); stroke-width: 1.5; }
.tq-diagram .tq-edge-label { font-family: var(--tq-thai); font-size: 11.5px; fill: var(--tq-text); }
.tq-diagram .tq-edge-badge { font-family: var(--tq-ui); font-size: 10px; }
.tq-diagram .tq-badge--Observed-in-source { fill: var(--tq-observed); }
.tq-diagram .tq-badge--scholarly-verdict { fill: var(--tq-verdict); }
.tq-showcase figcaption { font-family: var(--tq-ui); font-size: 13px; color: var(--tq-muted); margin: 8px 0 0; text-align: center; }

.tq-transcript { margin: 14px 0 0; border: 1px solid var(--tq-line); border-radius: 10px;
  padding: 10px 14px; background: var(--tq-bg); }
.tq-transcript summary { font-family: var(--tq-ui); font-size: 14px; color: var(--tq-heading); cursor: pointer; }
.tq-transcript summary:focus-visible { outline: 2px solid var(--tq-accent); outline-offset: 2px; }
.tq-transcript-h { font-family: var(--tq-ui); font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--tq-faint); margin: 12px 0 4px; }
.tq-transcript ul { margin: 0; padding-left: 20px; }
.tq-transcript li { margin: 4px 0; line-height: 1.7; }
.tq-transcript em { font-style: normal; color: var(--tq-accent); }
.tq-transcript a { color: var(--tq-accent); text-decoration: none; }

.tq-provisional ul { margin: 0; padding-left: 20px; }
.tq-provisional li { margin: 4px 0; color: var(--tq-muted); }

/* Sources */
.tq-sources h2 { font-family: var(--tq-serif); font-weight: 700; font-size: 19px; color: var(--tq-heading);
  border-bottom: 2px solid var(--tq-line-strong); padding-bottom: 6px; margin: 34px 0 14px; }
.tq-source-list { list-style: none; margin: 0; padding: 0; counter-reset: none; }
.tq-source-list li { display: grid; grid-template-columns: 28px 1fr; gap: 10px; margin: 0 0 12px;
  padding-bottom: 12px; border-bottom: 1px solid var(--tq-line); font-size: 15px; }
.tq-source-num { font-family: var(--tq-ui); font-weight: 700; color: var(--tq-accent); }
.tq-source-body a { color: var(--tq-accent); text-decoration: none; }
.tq-source-body a:focus-visible { outline: 2px solid var(--tq-accent); outline-offset: 2px; }
.tq-source-pub { display: block; font-family: var(--tq-ui); font-size: 12.5px; color: var(--tq-faint); margin-top: 2px; }

/* Arabic-majority bibliography → RTL (Bibliography & Citation Standard). Direction on the LIST
   flips the number column to the right and gives long Arabic citations the correct base layout;
   Thai bits inside each row are <bdi>-isolated in the markup so they stay readable. */
.tq-source-list--rtl { direction: rtl; }
.tq-source-list--rtl .tq-source-body { text-align: right; }
.tq-source-list--rtl .tq-source-pub { text-align: right; }

/* Archive rows */
.tq-arc-head { border-bottom: 1px solid var(--tq-line); padding-bottom: 18px; margin-bottom: 20px; }
.tq-rows { list-style: none; margin: 0; padding: 0; }
.tq-row a { display: grid; grid-template-columns: 40px 1fr 24px; gap: 12px; align-items: center;
  padding: 16px 4px; border-bottom: 1px solid var(--tq-line); text-decoration: none; color: var(--tq-text); }
.tq-row a:hover { background: var(--tq-bg-2); }
.tq-row a:focus-visible { outline: 2px solid var(--tq-accent); outline-offset: -2px; }
.tq-row-num { font-family: var(--tq-ui); font-weight: 700; color: var(--tq-faint); }
.tq-row-title { display: block; font-family: var(--tq-serif); font-weight: 600; color: var(--tq-heading); }
.tq-row-meta { display: block; font-size: 13px; color: var(--tq-muted); }
.tq-row-arrow { color: var(--tq-faint); }

#readingProgressBar { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: var(--tq-accent); z-index: 50; }

/* Mobile is its own composition: tighter shell, smaller Arabic, diagram scales via viewBox. */
@media (max-width: 560px) {
  body#taqyidat-detail, body#taqyidat-archive { font-size: 16px; line-height: 1.9; }
  .tq-shell { padding-top: 72px; }
  .tq-quote .tq-ar { font-size: 1.3rem; }
  .tq-source-list li { grid-template-columns: 22px 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto; } }