/* ─── Nav — logo always visible; glass background waits for scroll ───────────── */
.nav-logo {
  visibility: visible;
  transition: none;
}

.nav-logo .lockup-spiral {
  opacity: 1;
  transform: scale(1);
  transition: none;
}

.nav-logo .lockup-wordmark {
  opacity: 1;
  max-width: 340px;
  clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
  transform: translateX(0);
  transition: none;
}

/* ─── Charter Hero ───────────────────────────────────────────────────────────── */
.doc-hero {
  position: relative;
  padding: 160px clamp(20px, 5vw, 64px) clamp(72px, 10vw, 120px);
  overflow: hidden;
}

.doc-hero-wash {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(110% 80% at 20% 30%, rgb(var(--purple-wash)) 0%, rgb(var(--cream)) 60%);
}


.doc-hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.doc-h1 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(40px, 7vw, 80px);
  line-height: 1.0;
  letter-spacing: -1px;
  margin: 0 0 28px;
  color: rgb(var(--ink));
}

.doc-lead {
  max-width: 620px;
  margin: 0 0 20px;
}
.doc-lead--regular {
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.65;
  color: rgb(var(--text-body));
}

.doc-meta {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgb(var(--purple));
  margin: 0;
}

/* ─── Charter Sections ───────────────────────────────────────────────────────── */
.doc-section {
  padding: clamp(56px, 8vw, 100px) clamp(20px, 5vw, 64px);
  border-top: 1px solid rgb(var(--purple) / 0.07);
  scroll-margin-top: 80px;
}

.doc-section--alt {
  background: rgb(var(--cream-alt));
}

.doc-section--conclusion {
  background: rgb(var(--purple-deep));
  border-top-color: rgb(var(--purple-deep));
}

/* ─── Charter Item ───────────────────────────────────────────────────────────── */
.doc-item {
  display: grid;
  grid-template-columns: clamp(200px, 22%, 280px) 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
  max-width: 1060px;
}

.doc-item-header {
  position: sticky;
  top: 140px;
}

.doc-number {
  display: block;
  margin-bottom: 10px;
}
.doc-number--regular {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 36px;
  letter-spacing: 2px;
  color: rgb(var(--purple));
}


.doc-item-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.1;
  letter-spacing: -0.3px;
  margin: 0;
  color: rgb(var(--purple-deep));
}

.doc-section--conclusion .doc-item-title {
  color: rgb(var(--amber-bright));
}

.doc-number--conclusion {
  color: rgb(var(--text-on-dark));
}

.doc-section--conclusion .inline-link {
  color: rgb(var(--amber-bright));
}

.doc-section--conclusion .doc-statement-accent {
  color: rgb(var(--purple-mid));
  font-weight: 700;
}

.doc-section--conclusion .doc-item-body p {
  color: rgb(var(--text-on-dark-dim));
}

/* Bold inside the dark conclusion needs a light color, not the default --ink */
.doc-section--conclusion .doc-item-body strong {
  color: rgb(var(--text-on-dark));
}

/* ─── Charter Body ───────────────────────────────────────────────────────────── */
.doc-item-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.doc-item-body p {
  font-size: clamp(15.5px, 1.5vw, 17px);
  line-height: 1.75;
  color: rgb(var(--text-body));
}

.doc-item-body strong {
  font-weight: 600;
  color: rgb(var(--ink));
}

.doc-item-body .doc-statement {
  padding-bottom: 4px;
  border-bottom: 1px solid rgb(var(--purple) / 0.1);
}
.doc-item-body .doc-statement--regular {
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.5;
  color: rgb(var(--ink));
  font-weight: 500;
}

.doc-section--conclusion .doc-statement {
  color: rgb(var(--text-on-dark));
  border-bottom-color: rgb(var(--amber) / 0.35);
}


/* ─── AI Commitment Sub-labels ───────────────────────────────────────────────── */
.doc-sub {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.doc-item-body .doc-sub-label {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgb(var(--purple));
  margin: 0;
}

/* ─── Version toggle (base — JS hook, no visual opinion) ────────────────────── */
.doc-version-toggle {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  text-decoration: underline dotted;
  text-underline-offset: 3px;
}

.doc-version-toggle:hover,
.doc-version-toggle[aria-expanded="true"] {
  text-decoration: underline;
}

/* ─── Version pill (hero bottom — doc pages with versioning) ─────────────────── */
.doc-hero-foot {
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .doc-hero-foot {
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.doc-hero-foot.is-visible {
  opacity: 1;
}

.doc-hero-foot {
  position: absolute;
  bottom: clamp(24px, 4vw, 36px);
  left: 0;
  right: 0;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.doc-version-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgb(var(--purple) / 0.07);
  border: 1px solid rgb(var(--purple) / 0.18);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: rgb(var(--purple));
  text-decoration: none;
  position: relative;   /* anchors the 44px touch-target extender (styles.css) */
}

@media (prefers-reduced-motion: no-preference) {
  .doc-version-pill {
    transition: background 0.2s, border-color 0.2s;
  }
}

.doc-version-pill:hover,
.doc-version-pill[aria-expanded="true"] {
  background: rgb(var(--purple) / 0.12);
  border-color: rgb(var(--purple) / 0.32);
  text-decoration: none;
}

/* ─── Version timeline ───────────────────────────────────────────────────────── */
.doc-version-timeline {
  max-height: 0;
  overflow: hidden;
  border-bottom: 1px solid rgb(var(--purple) / 0.07);
}

@media (prefers-reduced-motion: no-preference) {
  .doc-version-timeline {
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.doc-version-timeline.is-open {
  max-height: 180px;
}

.doc-version-track {
  display: flex;
  align-items: flex-start;
  gap: 48px;
  padding: clamp(28px, 4vw, 40px) 0;
  overflow-x: auto;
  scrollbar-width: none;
  position: relative;
}

.doc-version-track::-webkit-scrollbar { display: none; }

.doc-version-track::before {
  content: '';
  position: absolute;
  top: calc(clamp(28px, 4vw, 40px) + 5px);
  left: 0;
  right: 25px;
  height: 1px;
  background: rgb(var(--purple) / 0.6);
}

.doc-version-track::after {
  content: '';
  position: absolute;
  top: calc(clamp(28px, 4vw, 40px) + 5px);
  right: 0;
  width: 25px;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    rgb(var(--purple) / 0.6) 0,
    rgb(var(--purple) / 0.6) 2px,
    transparent 2px,
    transparent 5px
  );
}

.doc-version-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  position: relative;
  z-index: 1;
  min-width: 140px;
}

.doc-version-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid rgb(var(--purple) / 0.35);
  background: rgb(var(--cream));
  flex-shrink: 0;
}

.doc-version-dot--current {
  background: rgb(var(--purple));
  border-color: rgb(var(--purple));
}

.doc-version-number {
  display: block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: rgb(var(--purple));
  text-decoration: none;
}

a.doc-version-number:hover {
  text-decoration: underline;
}

.doc-version-number--current {
  color: rgb(var(--ink));
}

.doc-version-date {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: rgb(var(--text-body));
}

.doc-version-note {
  display: block;
  font-size: 14px;
  color: rgb(var(--ink-soft));
  line-height: 1.4;
}

/* ─── Archive banner (versions/*.html only) ──────────────────────────────────── */
.doc-archive-banner {
  background: rgb(var(--amber-gold) / 0.08);
  border-bottom: 1px solid rgb(var(--amber) / 0.2);
  padding: 14px clamp(20px, 5vw, 64px);
  font-size: 14px;
  font-weight: 500;
  color: rgb(var(--ink-soft));
}

/* ─── Mobile ─────────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .doc-hero {
    padding-top: 110px;
    padding-bottom: 52px;
  }

  .doc-h1 {
    font-size: clamp(36px, 10vw, 56px);
    margin-bottom: 20px;
  }

  .doc-item {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .doc-item-header {
    position: static;
    display: flex;
    align-items: baseline;
    gap: 12px;
  }

  .doc-number {
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .doc-meta {
    display: none;
  }

  .doc-version-track {
    padding-left: clamp(20px, 5vw, 40px);
    padding-right: clamp(20px, 5vw, 40px);
  }

  .doc-version-track::before {
    left: clamp(20px, 5vw, 40px);
  }
}