/* FDA GenAI Comment Tracker · Vahana Labs
   Single-page static site. Tokens mirror the Vahana Labs design system. */

:root {
  --surface-page: #f5fafb;
  --surface-sunken: #eef5f7;
  --surface-highlight: #f2faf9;
  --surface-inverse: #00323d;
  --pure-white: #ffffff;
  --neutral-white: #ffffff;
  --neutral-black: #06262e;
  --neutral-slate: #4a6670;
  --neutral-midtone: #7e969d;
  --neutral-mist: #cae1e5;
  --neutral-light: #e8f1f3;
  --border-subtle: #d9e6e9;
  --border-default: #b9cfd4;
  --brand-primary: #007d99;
  --brand-primary-hover: #00637a;
  --brand-secondary: #a8562a;
  --brand-tertiary: #9ac6d0;
  --overlay: rgba(0, 50, 61, 0.56);
  --shadow-sm: 0 1px 3px rgba(0, 50, 61, 0.10);
  --shadow-md: 0 4px 14px rgba(0, 50, 61, 0.10);

  --pos-support: #257a5a;
  --pos-modify: #007d99;
  --pos-oppose: #c8324f;
  --pos-mixed: #ffc759;
  --pos-unclear: #9ac6d0;

  --font-display: 'Prata', Georgia, 'Times New Roman', serif;
  --font-editorial: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-body: 'Archivo', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --max: 1200px;
  --gutter: 48px;
  --sticky-offset: 150px;
}

html { scroll-behavior: smooth; scroll-padding-top: var(--sticky-offset); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--surface-page);
  color: var(--neutral-black);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--brand-primary); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--brand-primary-hover); text-decoration-thickness: 2px; }
button { font-family: inherit; color: inherit; }
button, [role="button"] { cursor: pointer; }
:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 2px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 200; background: var(--pure-white);
  padding: 8px 12px; border: 1px solid var(--border-default); border-radius: 4px; font-weight: 600;
}
.skip-link:focus { top: 8px; }

.wrap { max-width: var(--max); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }

/* Shared typographic utilities */
.kicker {
  font: 600 10px/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-slate);
}
.kicker--brand { color: var(--brand-primary); }
.label {
  font: 600 9px/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-slate);
}
.display { font-family: var(--font-display); letter-spacing: -0.015em; color: var(--neutral-black); }
.editorial { font-family: var(--font-editorial); color: var(--neutral-black); }
.tag {
  display: inline-block; font-size: 11.5px; line-height: 1.3; background: var(--neutral-light); color: var(--neutral-black);
  border-radius: 2px; padding: 3px 7px;
}
.btn-outline {
  border: 1px solid var(--border-default); background: var(--pure-white); border-radius: 4px; padding: 6px 10px;
  font-size: 12.5px; font-weight: 600; color: var(--brand-primary);
}
.btn-outline:hover { background: var(--neutral-light); }
.btn-outline--tiny { border-radius: 2px; padding: 3px 8px; font-size: 11.5px; }
.btn-text { border: 0; background: none; padding: 0; font-size: 12px; font-weight: 600; color: var(--brand-primary); text-decoration: underline; text-underline-offset: 3px; }
.btn-plain { border: 0; background: none; font-size: 14px; font-weight: 600; color: var(--brand-primary); padding: 4px 6px; }

/* Masthead */
.masthead {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding: 20px 0 18px; border-bottom: 1px solid var(--border-subtle);
}
.masthead__brand { font-family: var(--font-display); font-size: 19px; letter-spacing: -0.01em; color: var(--neutral-black); text-decoration: none; }
.masthead__tagline { font: 600 10px/1.3 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-slate); text-align: right; }

/* Hero */
.hero { padding: 44px 0 40px; }
.hero__grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: start; }
.hero__kicker { margin-bottom: 14px; }
.hero h1 { font-family: var(--font-display); font-size: 48px; line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 16px; font-weight: 400; }
.hero__sub { font-family: var(--font-editorial); font-size: 22px; line-height: 1.45; margin: 0 0 18px; max-width: 34ch; }
.hero__sub em { font-style: italic; color: var(--brand-primary); }
.hero__lede { font-size: 16px; line-height: 1.65; margin: 0 0 18px; max-width: 62ch; color: var(--neutral-slate); }
.hero__links { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; }
.hero__links a { font-size: 14px; font-weight: 600; }
.hero__note { font-size: 13px; color: var(--neutral-midtone); }
.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); margin: 0; }
.metric { background: var(--pure-white); padding: 16px 18px; margin: 0; }
.metric__value { font-family: var(--font-display); font-size: 30px; line-height: 1; color: var(--neutral-black); }
.metric__value--brand { color: var(--brand-primary); }
.metric__value--text { font-family: var(--font-body); font-size: 17px; line-height: 1.2; font-weight: 600; padding-top: 6px; }
.metric__label { font: 600 9px/1.4 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-slate); margin-top: 8px; }

/* Signals */
.signals { background: var(--surface-sunken); border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
.signals .wrap { padding-top: 32px; padding-bottom: 32px; }
.signals__kicker { margin-bottom: 20px; }
.signals__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); }
.signal { text-align: left; background: var(--pure-white); border: 0; padding: 20px; display: flex; flex-direction: column; gap: 8px; }
.signal:hover { background: var(--neutral-light); }
.signal__label { font: 600 9px/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--brand-primary); }
.signal__headline { font-family: var(--font-display); font-size: 21px; line-height: 1.2; letter-spacing: -0.015em; color: var(--neutral-black); }
.signal__detail { font-size: 14px; line-height: 1.55; color: var(--neutral-slate); }
.signal__evidence { font-size: 11.5px; color: var(--neutral-midtone); margin-top: 2px; }

/* Sticky controls */
.controls {
  position: sticky; top: 0; z-index: 60; background: rgba(245, 250, 251, .92);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); border-bottom: 1px solid var(--border-subtle);
}
.controls .wrap { padding-top: 10px; padding-bottom: 10px; }
.controls__row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.views { display: flex; border: 1px solid var(--border-default); border-radius: 4px; overflow: hidden; }
.view-btn { border: 0; padding: 7px 12px; font-size: 12.5px; font-weight: 600; background: var(--pure-white); color: var(--neutral-black); }
.view-btn + .view-btn { border-left: 1px solid var(--border-default); }
.view-btn[aria-pressed="true"] { background: var(--brand-primary); color: #fff; }
.view-btn:focus-visible { outline-offset: -3px; }
.search {
  flex: 1; min-width: 200px; height: 32px; padding: 0 10px; border: 1px solid var(--border-default); border-radius: 4px;
  background: var(--pure-white); font-size: 13px; color: var(--neutral-black); font-family: inherit;
}
.search::placeholder { color: var(--neutral-midtone); }
.filter-toggle { display: none; align-items: center; height: 32px; padding: 0 12px; border: 1px solid var(--border-default); border-radius: 4px; background: var(--pure-white); font-size: 13px; font-weight: 600; color: var(--brand-primary); }
.result-line { font-size: 12px; color: var(--neutral-slate); white-space: nowrap; }
.filter-rows { display: flex; gap: 28px; flex-wrap: wrap; padding: 10px 0 4px; }
.filter-group { display: flex; flex-direction: column; gap: 6px; }
.filter-group__label { font: 600 9px/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-slate); }
.chips { display: flex; flex-wrap: wrap; gap: 4px; }
.chip {
  border: 1px solid var(--border-subtle); background: var(--pure-white); color: var(--neutral-black);
  border-radius: 4px; padding: 4px 9px; font-size: 12px; line-height: 1.3; font-weight: 400;
}
.chip:hover { border-color: var(--border-default); }
.chip[aria-pressed="true"] { background: var(--brand-primary); border-color: var(--brand-primary); color: #fff; font-weight: 600; }

/* Tracker sections */
main { padding: 36px 0 8px; }
.section { margin-bottom: 44px; }
.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--neutral-black); margin-bottom: 2px; }
.section__head h2 { font-family: var(--font-display); font-size: 26px; letter-spacing: -0.015em; margin: 0; font-weight: 400; }
.section__meta { font: 600 10px/1 var(--font-body); letter-spacing: .14em; text-transform: uppercase; color: var(--neutral-slate); white-space: nowrap; }
.section__blurb { font-size: 14.5px; line-height: 1.6; color: var(--neutral-slate); margin: 12px 0 18px; max-width: 74ch; }
.section__empty, .empty-state { font-size: 14px; color: var(--neutral-midtone); padding: 16px 0; border-bottom: 1px solid var(--border-subtle); margin: 0; }
.empty-state { border: 1px dashed var(--border-default); border-radius: 6px; padding: 24px; text-align: center; margin-bottom: 44px; }
.empty-state .btn-text { margin-left: 6px; font-size: 14px; }

/* Question card */
.q { border: 1px solid var(--border-subtle); border-radius: 6px; background: var(--pure-white); margin-bottom: 10px; box-shadow: var(--shadow-sm); }
.q[data-open="true"] { border-color: var(--border-default); box-shadow: var(--shadow-md); }
.q__toggle { width: 100%; text-align: left; background: none; border: 0; padding: 18px 20px; display: block; border-radius: 6px; }
.q__toggle:focus-visible { outline-offset: -3px; }
.q__row { display: flex; gap: 18px; align-items: flex-start; }
.q__code { font-family: var(--font-display); font-size: 17px; color: var(--brand-primary); min-width: 38px; padding-top: 1px; }
.q__body { flex: 1; min-width: 0; }
.q__titlerow { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.q__title { font-size: 17px; font-weight: 600; line-height: 1.35; color: var(--neutral-black); }
.q__impact { font: 600 9px/1 var(--font-body); letter-spacing: .12em; text-transform: uppercase; color: var(--brand-secondary); border: 1px solid var(--brand-secondary); border-radius: 2px; padding: 4px 6px; }
.q__ask { font-size: 14.5px; line-height: 1.55; color: var(--neutral-slate); margin: 6px 0 0; max-width: 76ch; }
.q__counts { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.q__count { font-size: 13px; font-weight: 600; color: var(--neutral-black); }
.q__mix { font-size: 12.5px; color: var(--neutral-slate); }
.q__positions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin-top: 10px; }
.pos-count { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--neutral-black); }
.pos-dot { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }
.q__tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.q__preview { font-family: var(--font-editorial); font-size: 16px; line-height: 1.5; color: var(--neutral-black); margin: 14px 0 0; padding-left: 14px; border-left: 2px solid var(--brand-primary); max-width: 78ch; }
.q__state { font-size: 12px; font-weight: 600; color: var(--brand-primary); white-space: nowrap; padding-top: 3px; }
.q__panel { border-top: 1px solid var(--border-subtle); padding: 22px 20px 24px 76px; background: var(--pure-white); border-radius: 0 0 6px 6px; }
.q__panel[hidden] { display: none; }
.q__fda { font-family: var(--font-editorial); font-size: 18px; line-height: 1.55; margin: 0 0 6px; max-width: 70ch; }
.q__fda--pending { font-family: var(--font-body); font-size: 14px; color: var(--neutral-slate); font-style: italic; }
.q__panel .label { display: block; margin-bottom: 8px; }
.q__panel .label--gap { margin-top: 24px; }
.q__about { font-size: 15.5px; line-height: 1.65; margin: 0; max-width: 72ch; }
.q__sublink { font-size: 12.5px; font-weight: 600; }
.q__saying { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin: 28px 0 12px; border-bottom: 1px solid var(--border-subtle); padding-bottom: 8px; }
.q__saying .label { margin: 0; }
.q__shown { font-size: 12px; color: var(--neutral-midtone); }
.positions { display: flex; flex-direction: column; gap: 12px; }

/* Commenter position card */
.pc { border: 1px solid var(--border-subtle); border-radius: 6px; background: var(--pure-white); padding: 16px 18px; box-shadow: var(--shadow-sm); }
.pc__head { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; align-items: flex-start; }
.pc__org { font-size: 15.5px; font-weight: 600; color: var(--neutral-black); }
.pc__type { font-size: 12px; color: var(--neutral-slate); margin-top: 3px; }
.badge { display: inline-block; border-radius: 999px; padding: 4px 10px; font-size: 11.5px; font-weight: 600; line-height: 1.3; color: #fff; white-space: nowrap; }
.badge--support { background: var(--pos-support); }
.badge--support_with_modification { background: var(--pos-modify); }
.badge--oppose { background: var(--pos-oppose); }
.badge--mixed { background: var(--pos-mixed); color: var(--neutral-black); }
.badge--unclear { background: var(--pos-unclear); color: var(--neutral-black); }
.pc__summary { font-size: 14.5px; line-height: 1.6; color: var(--neutral-black); margin: 12px 0 0; max-width: 76ch; }
.pc__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 14px; }
.pc__grid .label { margin-bottom: 5px; display: block; }
.pc__text { font-size: 14px; line-height: 1.55; color: var(--neutral-black); }
.pc__foot { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; align-items: center; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border-subtle); }
.pc__tags { display: flex; gap: 6px; flex-wrap: wrap; }
.pc__actions { display: flex; gap: 14px; align-items: center; }
.pc__actions a { font-size: 12.5px; font-weight: 600; }

/* Tension block */
.tension { margin-top: 26px; border-top: 1px solid var(--border-subtle); padding-top: 20px; }
.tension .label { margin-bottom: 14px; display: block; }
.tension__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); }
.tension__cell { background: var(--pure-white); padding: 14px 16px; }
.tension__group { font-size: 13px; font-weight: 600; color: var(--brand-primary); margin-bottom: 6px; }
.tension__text { font-size: 14px; line-height: 1.55; }
.tension__synth { margin-top: 14px; }
.tension__synth .label { margin-bottom: 0; }
.tension__synth p { font-family: var(--font-editorial); font-size: 17px; line-height: 1.55; margin: 8px 0 0; max-width: 74ch; }
.tension__limited { font-size: 13px; color: var(--neutral-midtone); margin: 0; }

/* Vahana read */
.vahana { margin-top: 24px; background: var(--surface-highlight); border: 1px solid var(--brand-tertiary); border-radius: 6px; padding: 18px 20px; }
.vahana__head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.vahana__title { font-family: var(--font-display); font-size: 16px; color: var(--neutral-black); }
.vahana__meta { font: 600 9px/1 var(--font-body); letter-spacing: .12em; text-transform: uppercase; color: var(--neutral-slate); }
.vahana__list { display: flex; flex-direction: column; gap: 12px; margin: 0; }
.vahana__item dt { font-size: 13px; font-weight: 600; color: var(--neutral-black); margin-bottom: 4px; }
.vahana__item dd { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--neutral-black); max-width: 78ch; }

/* Gaps */
.gaps { margin: 8px 0 44px; }
.gaps__intro { font-size: 15px; line-height: 1.65; color: var(--neutral-slate); margin: 14px 0 22px; max-width: 74ch; }
.gaps__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); }
.gap { background: var(--pure-white); padding: 20px 22px; display: flex; flex-direction: column; gap: 10px; }
.gap__title { font-size: 16.5px; font-weight: 600; line-height: 1.35; margin: 0; }
.gap__body { font-size: 14.5px; line-height: 1.6; max-width: 60ch; margin: 0; }
.gap__stats, .gap__groups { font-size: 12.5px; color: var(--neutral-slate); }
.gap__quotes { border-left: 2px solid var(--brand-primary); padding-left: 12px; display: flex; flex-direction: column; gap: 8px; margin: 2px 0 0; }
.gap__quote { font-family: var(--font-editorial); font-size: 15px; line-height: 1.5; margin: 0; }
.gap__source { font-size: 11.5px; color: var(--neutral-slate); margin-top: 4px; }
.gap__source button { border: 0; background: none; padding: 0; font: inherit; color: var(--brand-primary); text-decoration: underline; text-underline-offset: 3px; }
.gap__links { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }

/* Methodology */
.method { background: var(--surface-inverse); color: var(--neutral-white); }
.method .wrap { padding-top: 48px; padding-bottom: 56px; }
.method__grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; }
.method h2 { font-family: var(--font-display); font-size: 24px; letter-spacing: -0.015em; margin: 0 0 16px; color: var(--neutral-white); font-weight: 400; }
.method p { font-size: 15px; line-height: 1.7; color: var(--neutral-mist); margin: 0 0 12px; max-width: 66ch; }
.method p:last-child { margin-bottom: 0; }
.method__aside { display: flex; flex-direction: column; gap: 16px; }
.method__box { border: 1px solid rgba(202, 225, 229, .35); border-radius: 6px; padding: 16px 18px; }
.method__box h3 { font-family: var(--font-display); font-size: 17px; line-height: 1.35; color: var(--neutral-white); margin: 0 0 8px; font-weight: 400; }
.method__box p { font-size: 14px; line-height: 1.6; }
.method__foot { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(202, 225, 229, .25); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.method__brand { font-family: var(--font-display); font-size: 16px; color: var(--neutral-white); }
.method__note { font-size: 12.5px; color: var(--neutral-mist); }
.method a { color: var(--neutral-white); }

/* Drawers */
.drawer-backdrop { position: fixed; inset: 0; z-index: 90; background: var(--overlay); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); display: flex; justify-content: flex-end; }
.drawer-backdrop[hidden] { display: none; }
.drawer-backdrop--evidence { z-index: 100; }
.drawer { width: 420px; max-width: 100%; height: 100%; background: var(--pure-white); overflow: auto; padding: 24px 26px 40px; box-shadow: -6px 0 24px rgba(0, 50, 61, .15); }
.drawer--evidence { width: 520px; padding: 26px 30px 48px; }
.drawer__head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 18px; }
.drawer__title { font-family: var(--font-display); font-size: 18px; color: var(--neutral-black); margin: 0; font-weight: 400; }
.drawer__groups { display: flex; flex-direction: column; gap: 22px; }
.drawer .chips { gap: 6px; }
.drawer .filter-group { gap: 8px; }
.evidence__org { font-size: 19px; font-weight: 600; color: var(--neutral-black); margin: 0 0 4px; }
.evidence__type { font-size: 13px; color: var(--neutral-slate); margin-bottom: 20px; }
.evidence__quote { margin: 0 0 22px; padding: 14px 16px; background: var(--surface-sunken); border-left: 2px solid var(--brand-primary); font-family: var(--font-editorial); font-size: 16.5px; line-height: 1.6; color: var(--neutral-black); }
.evidence__meta { display: flex; flex-direction: column; gap: 1px; background: var(--border-subtle); border: 1px solid var(--border-subtle); margin: 0 0 20px; }
.evidence__row { background: var(--pure-white); padding: 11px 14px; display: flex; justify-content: space-between; gap: 16px; }
.evidence__row dt { font-size: 12px; color: var(--neutral-slate); }
.evidence__row dd { margin: 0; font-size: 13px; font-weight: 600; color: var(--neutral-black); text-align: right; }
.evidence__link { font-size: 13.5px; font-weight: 600; }
.evidence__disclaimer { font-size: 12.5px; line-height: 1.6; color: var(--neutral-midtone); margin: 18px 0 0; }
body.drawer-open { overflow: hidden; }

/* Loading / error */
.status { padding: 40px 0; color: var(--neutral-slate); font-size: 14px; }

/* Responsive */
@media (max-width: 900px) {
  :root { --gutter: 20px; --sticky-offset: 90px; }
  .hero { padding: 32px 0 28px; }
  .hero h1 { font-size: 36px; }
  .hero__sub { font-size: 19px; }
  .hero__grid, .method__grid, .pc__grid, .gaps__grid, .tension__grid { grid-template-columns: 1fr; }
  .signals__grid { grid-template-columns: 1fr 1fr; }
  .filter-rows { display: none; }
  .filter-toggle { display: inline-flex; }
  .q__panel { padding-left: 20px; }
  .result-line { white-space: normal; }
  .masthead__tagline { display: none; }
}
@media (max-width: 620px) {
  .hero h1 { font-size: 32px; }
  .signals__grid { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .q__row { gap: 12px; }
  .q__code { min-width: 30px; font-size: 15px; }
  .q__state { display: none; }
  .drawer { width: 100%; }
  .section__head { flex-direction: column; gap: 6px; }
}