/* e-manifest.pl — editorial manifest landing
   Tokens / Layout / Accordion / Share / Responsive
   ================================================ */

:root {
  --paper:        #faf8f3;
  --paper-dim:    #f3efe5;
  --ink:          #1a1816;
  --ink-soft:     #4a463f;
  --ink-mute:     #8c857a;
  --line:         #e8e3d8;
  --line-strong:  #d6d0c2;
  --accent:       #9a3412;
  --accent-soft:  rgba(154, 52, 18, 0.09);
  --accent-edge:  rgba(154, 52, 18, 0.30);
  --shadow:       0 1px 0 rgba(26,24,22,0.04), 0 12px 32px -16px rgba(26,24,22,0.18);

  --font-display: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --measure:      36rem;
  --measure-wide: 44rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:        #14120f;
    --paper-dim:    #1a1815;
    --ink:          #f0ece4;
    --ink-soft:     #b8b1a3;
    --ink-mute:     #6a6359;
    --line:         #2a2723;
    --line-strong:  #3a3631;
    --accent:       #ea8055;
    --accent-soft:  rgba(234, 128, 85, 0.10);
    --accent-edge:  rgba(234, 128, 85, 0.35);
    --shadow:       0 1px 0 rgba(0,0,0,0.4), 0 12px 32px -16px rgba(0,0,0,0.6);
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  font-feature-settings: 'kern', 'liga', 'calt', 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: var(--paper); }

a { color: inherit; text-decoration-color: var(--line-strong); text-underline-offset: 3px; transition: text-decoration-color .2s, color .2s; }
a:hover { text-decoration-color: var(--accent); }

button { font: inherit; }

.grain {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.05;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
}
@media (prefers-color-scheme: dark) {
  .grain { mix-blend-mode: screen; opacity: 0.06; }
}

.skip-link {
  position: absolute;
  left: -1000px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1rem;
  z-index: 200;
  border-radius: 0 0 .375rem 0;
}
.skip-link:focus { left: 0; outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Header ─────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  background: color-mix(in oklab, var(--paper) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark { font-size: 1.125rem; line-height: 1; }
.lang-nav {
  display: flex;
  gap: 0.125rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}
.lang-nav a {
  padding: 0.4rem 0.625rem;
  text-decoration: none;
  color: var(--ink-mute);
  border-radius: 0.375rem;
  transition: color .2s, background .2s;
}
.lang-nav a:hover { color: var(--ink); background: var(--accent-soft); }
.lang-nav a.active { color: var(--accent); background: var(--accent-soft); }
.lang-nav a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Main / Article ─────────────────────────────────────── */
main { padding: 3.5rem 1.25rem 6rem; }

.manifest {
  max-width: var(--measure-wide);
  margin: 0 auto;
}

.manifest h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 6.5vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.028em;
  margin: 0.5rem 0 1.5rem;
  text-wrap: balance;
  color: var(--ink);
}

.manifest > p:first-of-type {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.125rem, 2.2vw, 1.4375rem);
  line-height: 1.45;
  color: var(--ink-soft);
  margin: 0 0 2.25rem;
  max-width: var(--measure);
  text-wrap: pretty;
}
.manifest > p:first-of-type strong { font-weight: 500; color: var(--ink); }

.manifest h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 3rem 0 1rem;
  text-wrap: balance;
  color: var(--ink);
}

.manifest h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.005em;
  margin: 1.75rem 0 0.5rem;
  color: var(--ink);
}

.manifest p { margin: 0 0 1rem; max-width: var(--measure); }
.manifest p strong { font-weight: 600; color: var(--ink); }
.manifest p em { font-style: italic; color: var(--ink-soft); }

.manifest ul, .manifest ol { padding-left: 1.5rem; margin: 0 0 1.25rem; max-width: var(--measure); }
.manifest li { margin: 0.4rem 0; }
.manifest li::marker { color: var(--accent); }

.manifest hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 3rem auto;
  max-width: 6rem;
  position: relative;
}
.manifest hr::after {
  content: '§';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--paper);
  padding: 0 0.75rem;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--ink-mute);
  font-size: 1rem;
}

.manifest blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.25rem 0 0.25rem 1.125rem;
  margin: 1.5rem 0;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--ink-soft);
  max-width: var(--measure);
}

.manifest pre {
  background: var(--paper-dim);
  padding: 1rem 1.125rem;
  border-radius: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  max-width: var(--measure);
}
.manifest p code, .manifest li code, .accordion-content code:not(pre code) {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.125em 0.35em;
  background: color-mix(in oklab, var(--ink) 8%, transparent);
  border-radius: 0.25rem;
}

/* URL link block (former <pre><code> with single URL) */
.url-link {
  display: block;
  margin: 1.25rem 0;
  padding: 0.875rem 1.125rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent-edge);
  border-radius: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent);
  word-break: break-all;
  line-height: 1.5;
  text-decoration: none;
  transition: background .2s, transform .1s, border-color .2s;
  max-width: var(--measure);
  position: relative;
}
.url-link:hover { background: color-mix(in oklab, var(--accent) 14%, transparent); border-color: var(--accent); }
.url-link:active { transform: translateY(1px); }
.url-link::after {
  content: '↗';
  display: inline-block;
  margin-left: 0.375rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.875rem;
}

/* ── Answers / Accordion ────────────────────────────────── */
.answers {
  max-width: var(--measure-wide);
  margin: 5rem auto 0;
  padding-top: 3rem;
  border-top: 1px solid var(--line);
}

.answers-head { margin-bottom: 2rem; }
.answers-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.625rem;
}
.answers-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.625rem, 3.2vw, 2.25rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 0.625rem;
  text-wrap: balance;
}
.answers-hint {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  margin: 0;
  max-width: var(--measure);
}

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

.accordion-item { border-top: 1px solid var(--line); }
.accordion-item:last-child { border-bottom: 1px solid var(--line); }

.accordion-trigger {
  width: 100%;
  background: transparent;
  border: 0;
  padding: 1.25rem 0.5rem 1.25rem 0.5rem;
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  gap: 1rem;
  align-items: start;
  text-align: left;
  cursor: pointer;
  color: inherit;
  border-radius: 0.375rem;
  transition: background .2s;
}
.accordion-trigger:hover { background: var(--accent-soft); }
.accordion-trigger:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.accordion-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  padding-top: 0.3rem;
}
.accordion-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--ink);
  letter-spacing: -0.005em;
  text-wrap: pretty;
}
.accordion-icon {
  width: 1.25rem; height: 1.25rem;
  color: var(--ink-mute);
  flex-shrink: 0;
  margin-top: 0.3rem;
  margin-right: 0.25rem;
  transition: transform .25s ease, color .2s;
}
.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
  color: var(--accent);
}
.accordion-trigger[aria-expanded="true"] .accordion-title {
  color: var(--accent);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.4,0,.2,1);
}
.accordion-panel-inner {
  padding: 0.5rem 0.5rem 1.75rem 4rem;
}
.accordion-content {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: var(--measure);
}
.accordion-content > *:first-child { margin-top: 0; }
.accordion-content p { margin: 0 0 1rem; }
.accordion-content strong { color: var(--ink); font-weight: 600; }
.accordion-content em { font-style: italic; }
.accordion-content ul, .accordion-content ol { padding-left: 1.25rem; margin: 0 0 1rem; }
.accordion-content li { margin: 0.3rem 0; }
.accordion-content li::marker { color: var(--accent); }
.accordion-content h2, .accordion-content h3, .accordion-content h4 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  margin: 1.5rem 0 0.5rem;
  letter-spacing: -0.005em;
}
.accordion-content blockquote {
  border-left: 2px solid var(--accent);
  padding-left: 0.875rem;
  margin: 1rem 0;
  font-style: italic;
}

.copy-btn {
  margin-top: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.95rem;
  background: var(--ink);
  color: var(--paper);
  border: 0;
  border-radius: 0.375rem;
  font: 500 0.8125rem var(--font-body);
  letter-spacing: 0.005em;
  cursor: pointer;
  transition: background .15s, transform .1s, opacity .15s;
}
.copy-btn:hover { opacity: 0.88; }
.copy-btn:active { transform: translateY(1px); }
.copy-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.copy-btn svg { width: 0.875rem; height: 0.875rem; }
.copy-btn.is-copied { background: var(--accent); }

/* ── Share ──────────────────────────────────────────────── */
.share {
  max-width: var(--measure-wide);
  margin: 5rem auto 0;
  padding-top: 3rem;
  border-top: 1px solid var(--line);
}
.share-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
  text-wrap: balance;
}
.share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font: 500 0.875rem var(--font-body);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s, transform .1s;
}
.share-btn:hover { background: var(--accent-soft); border-color: var(--accent-edge); color: var(--accent); }
.share-btn:active { transform: translateY(1px); }
.share-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.share-btn svg { width: 1rem; height: 1rem; flex-shrink: 0; }

.downloads {
  margin-top: 2.25rem;
  padding-top: 1.75rem;
  border-top: 1px dashed var(--line);
}
.downloads-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 0.875rem;
}
.downloads-buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.875rem;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 0.375rem;
  font: 500 0.8125rem var(--font-body);
  color: var(--ink-soft);
  text-decoration: none;
  transition: background .2s, border-color .2s, color .2s, transform .1s;
}
.download-btn::before {
  content: '↓';
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--ink-mute);
}
.download-btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent-edge);
  color: var(--accent);
}
.download-btn:hover::before { color: var(--accent); }
.download-btn:active { transform: translateY(1px); }
.download-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.download-btn.primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  padding: 0.55rem 1rem;
  font-weight: 600;
}
.download-btn.primary::before { color: var(--paper); }
.download-btn.primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--paper);
}
.download-btn.primary:hover::before { color: var(--paper); }

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 1.25rem;
  text-align: center;
  color: var(--ink-mute);
  font-size: 0.8125rem;
  background: var(--paper-dim);
}
.site-footer p { margin: 0.25rem 0; }
.site-footer a { color: var(--ink-soft); }
.footer-meta { font-style: italic; }

/* ── Toast ──────────────────────────────────────────────── */
.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translate(-50%, 1rem);
  background: var(--ink);
  color: var(--paper);
  padding: 0.7rem 1.125rem;
  border-radius: 0.5rem;
  font: 500 0.875rem var(--font-body);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
  z-index: 150;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 640px) {
  body { font-size: 16px; }
  main { padding: 2.25rem 1rem 4.5rem; }
  .header-inner { padding: 0.75rem 1rem; }
  .lang-nav a { padding: 0.5rem 0.625rem; }
  .accordion-trigger { grid-template-columns: 2.25rem 1fr auto; gap: 0.75rem; padding: 1.05rem 0.25rem; }
  .accordion-num { font-size: 0.6875rem; padding-top: 0.2rem; }
  .accordion-title { font-size: 0.9875rem; }
  .accordion-panel-inner { padding: 0.25rem 0.25rem 1.5rem 3rem; }
  .answers, .share { margin-top: 3.5rem; padding-top: 2.5rem; }
  .manifest hr { margin: 2.5rem auto; }
}
@media (min-width: 1280px) {
  .accordion-trigger { padding: 1.5rem 0.5rem; }
  main { padding-top: 4.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}