/* ==========================================================================
   Succession Radar — shared components
   Loaded after /css/tokens.css on every page.

   Every value here is a token. No colour, font size or font family is written
   down in this file — if a component needs one that does not exist, it goes
   into tokens.css first (tests/test_brand_rules.py enforces it). Layout that
   belongs to one page stays in that page's own <style> block.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Reset
   -------------------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; }
h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

b, strong { font-weight: var(--weight-semibold); }

/* Form controls do not inherit type by default; left alone they would render
   in the operating system's face, which is a third typeface. So would code:
   the two-typeface rule has no monospace exception. */
button, input, select, textarea { font: inherit; color: inherit; }
code, kbd, pre, samp { font-family: var(--font-body); font-size: inherit; }

table { border-collapse: collapse; }
th { font-weight: var(--weight-medium); text-align: left; }

/* --------------------------------------------------------------------------
   2. Layout
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 28px;
}
.container--text { max-width: 820px; }
.container--form { max-width: 520px; }
.container--wide { max-width: 1400px; }

/* The page frame: header, main, footer. A page shorter than the window keeps
   its footer at the foot of the window rather than floating halfway up. */
body { display: flex; flex-direction: column; min-height: 100vh; }
body > main { flex: 1 0 auto; }
/* A content page: room between its last line and the footer. */
.page { padding-bottom: var(--space-8); }

.section { border-bottom: var(--border-width) solid var(--border-default); }
.section--raised { background: var(--surface-raised); }
.section--last { border-bottom: none; }
/* Vertical padding only: .section__inner sits on the same element as
   .container, whose side padding it must not reset. */
.section__inner { padding-top: 88px; padding-bottom: 88px; }

@media (max-width: 640px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .page { padding-bottom: var(--space-7); }
  .section__inner { padding-top: 56px; padding-bottom: 56px; }
}

/* --------------------------------------------------------------------------
   3. Type helpers
   -------------------------------------------------------------------------- */

.eyebrow {
  font-size: var(--size-caption);
  font-weight: var(--weight-medium);
  line-height: var(--leading-caption);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-title {
  font-size: var(--size-h1);
  line-height: var(--leading-tight);
  margin: var(--space-7) 0 var(--space-4);
  text-wrap: pretty;
}

.section-title {
  font-size: var(--size-h2);
  line-height: 1.2;
  margin: 0 0 var(--space-4);
  max-width: 24ch;
  text-wrap: pretty;
}

.lead {
  font-size: var(--size-lead);
  line-height: var(--leading-lead);
  color: var(--text-body);
  max-width: 60ch;
  text-wrap: pretty;
}

.muted { color: var(--text-muted); }
.text-error { color: var(--text-error); }
.text-success { color: var(--text-success); }
.nowrap { white-space: nowrap; }

/* Long-form pages: terms, privacy, about, funding. Running text at 16px on a
   68ch measure, with headings spaced from what came before them. */
.prose { color: var(--text-body); }
.prose > * + * { margin-top: var(--space-4); }
.prose h2 { font-size: var(--size-h4); line-height: 1.3; margin-top: var(--space-7); }
.prose h3 { font-size: var(--size-lead); line-height: 1.35; margin-top: var(--space-6); }
.prose h2 + *, .prose h3 + * { margin-top: var(--space-3); }
.prose ul, .prose ol { padding-left: var(--space-5); max-width: var(--measure); }
.prose li + li { margin-top: var(--space-2); }
/* A boxed aside in running text needs more air than a paragraph gap, and a
   bottom margin rather than a rule on what follows, so a heading after it
   keeps its own larger space. */
.prose > .callout, .prose > .card, .prose > .status { margin-top: var(--space-5); margin-bottom: var(--space-5); }

/* --------------------------------------------------------------------------
   4. The logo lockup
   Concept C, "Cohort Bars" (BRAND.md §5). The mark is inline SVG so it takes
   its colour from the lockup. Primary 800 on light; .lockup--inverted for
   Paper on Navy 700 or darker. Never on amber, never outlined.
   -------------------------------------------------------------------------- */

.lockup {
  display: inline-flex;
  align-items: flex-end;
  gap: 11px;
  flex: 0 0 auto;
  color: var(--logo-color);
  text-decoration: none;
}
.lockup:hover { color: var(--logo-color); }
.lockup__mark {
  display: block;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  fill: currentColor;
}
.lockup__wordmark {
  font-family: var(--font-heading);
  font-size: var(--size-wordmark);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wordmark);
  line-height: 0.78;
  white-space: nowrap;
}
.lockup--sm { gap: 9px; }
.lockup--sm .lockup__mark { width: 18px; height: 18px; }
.lockup--sm .lockup__wordmark { font-size: var(--size-wordmark-sm); }
.lockup--inverted,
.lockup--inverted:hover { color: var(--logo-color-inverted); }

/* --------------------------------------------------------------------------
   5. Site header (BRAND.md §6)
   64px, Paper, a 1px Rule border and no shadow. Sticky; the border is the
   only state. One CTA — "Start free" signed out, "Dashboard" signed in.
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface-page);
  border-bottom: var(--border-width) solid var(--border-default);
}
.site-header--static { position: static; }
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-height: var(--header-height);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex: 0 1 auto;
}
.site-nav__link {
  font-size: var(--size-label);
  font-weight: var(--weight-medium);
  line-height: var(--leading-caption);
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  padding: 0 0 2px;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}
.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--text-heading);
  border-bottom-color: var(--border-strong);
}

.nav-burger {
  display: none;
  order: 2;
  flex-direction: column;
  gap: 4px;
  padding: 9px 10px;
  background: transparent;
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
}
.nav-burger:hover { border-color: var(--border-strong); }
.nav-burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-heading);
}

.mobile-menu {
  border-top: var(--border-width) solid var(--border-default);
  background: var(--surface-page);
}
.mobile-menu__list {
  display: flex;
  flex-direction: column;
  padding-top: var(--space-2);
  padding-bottom: var(--space-3);
}
.mobile-menu__link {
  display: block;
  width: 100%;
  padding: var(--space-3) 0;
  font-size: var(--size-label);
  font-weight: var(--weight-medium);
  color: var(--text-heading);
  text-align: left;
  text-decoration: none;
  background: none;
  border: 0;
  border-bottom: var(--border-width) solid var(--border-default);
  cursor: pointer;
}
.mobile-menu__link:last-child { border-bottom: 0; }
.mobile-menu__link[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}

@media (min-width: 1001px) {
  .mobile-menu { display: none !important; }
}
@media (max-width: 1000px) {
  .site-nav .site-nav__link { display: none; }
  .nav-burger { display: inline-flex; }
  /* On a phone the CTA persists as a text link, not a button. */
  .site-nav .site-nav__cta {
    background: transparent;
    color: var(--text-heading);
    border-color: transparent;
    padding: var(--space-2) 0;
  }
}
@media (max-width: 640px) {
  .site-header__inner { min-height: var(--header-height-mobile); gap: var(--space-4); }
  .site-nav { gap: var(--space-4); }
}

/* The product header: the lockup and the account's controls, wrapping on a
   narrow window rather than squashing every label onto two lines. */
.app-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  min-height: var(--header-height);
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}
.app-bar__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   6. Buttons
   Primary: solid Primary 800, hover Primary 600. Secondary: a 1px Rule border
   that darkens on hover. Both 4px radius, both the same outer size.
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--size-label);
  font-weight: var(--weight-medium);
  line-height: var(--leading-body);
  padding: 11px 20px;
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-md);
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: var(--action-primary-bg);
  color: var(--action-primary-text);
}
.btn-primary:hover { background: var(--action-primary-bg-hover); color: var(--action-primary-text); }
.btn-primary:active { background: var(--action-primary-bg-active); }
.btn-secondary {
  background: var(--action-secondary-bg);
  color: var(--action-secondary-text);
  border-color: var(--border-default);
}
.btn-secondary:hover { border-color: var(--border-strong); color: var(--action-secondary-text); }
.btn:disabled,
.btn[aria-disabled="true"] {
  background: var(--action-disabled-bg);
  color: var(--action-disabled-text);
  border-color: transparent;
  cursor: not-allowed;
}
.btn-sm { padding: 5px 12px; }
.btn-block { display: flex; width: 100%; }

/* A button that reads as a link: row actions, "Close", "Forgot password". */
.btn-link {
  display: inline;
  padding: 0;
  font: inherit;
  color: var(--text-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  background: none;
  border: 0;
  cursor: pointer;
}
.btn-link:hover { color: var(--text-link-hover); }
.btn-link:disabled { color: var(--text-muted); cursor: not-allowed; }

/* --------------------------------------------------------------------------
   7. Forms
   Zero-specificity element rules, so any page can override them.
   -------------------------------------------------------------------------- */

:where(input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"])),
:where(select),
:where(textarea) {
  width: 100%;
  padding: 10px 12px;
  font-size: var(--size-body);
  line-height: var(--leading-caption);
  color: var(--text-body);
  background: var(--surface-page);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-md);
}
:where(textarea) { line-height: var(--leading-body); resize: vertical; }
:where(input, select, textarea):focus {
  outline: var(--focus-ring-width) solid var(--border-focus);
  outline-offset: 0;
  border-color: var(--border-focus);
}
:where(input, select, textarea):disabled {
  background: var(--surface-raised);
  color: var(--text-muted);
}
::placeholder { color: var(--text-muted); opacity: 1; }
input[type="checkbox"], input[type="radio"] { accent-color: var(--action-primary-bg); }

.field { margin-bottom: var(--space-5); }
.label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--size-label);
  font-weight: var(--weight-medium);
  line-height: var(--leading-caption);
  color: var(--text-body);
}
.field-hint {
  margin-top: var(--space-2);
  font-size: var(--size-body);
  line-height: var(--leading-lead);
  color: var(--text-muted);
}

/* A checkbox with its sentence beside it: consent lines, the terms tick. */
.check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--size-body);
  line-height: var(--leading-lead);
  color: var(--text-body);
}
.check input { flex: 0 0 auto; width: 18px; height: 18px; margin: 3px 0 0; cursor: pointer; }
.check label { cursor: pointer; }

/* Honeypot: hidden from people, filled by bots. Kept out of the tab order
   and hidden from screen readers so it never reaches a real user. */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* --------------------------------------------------------------------------
   8. Surfaces: cards, callouts, status messages
   -------------------------------------------------------------------------- */

.card {
  background: var(--surface-page);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 28px;
}
.card--raised { background: var(--surface-raised); }
.card__title {
  font-family: var(--font-heading);
  font-size: var(--size-h4);
  font-weight: var(--weight-semibold);
  line-height: 1.3;
  color: var(--text-heading);
}

/* Information set apart from the flow: Primary 100 with Ink on top (13.2:1).
   Links inside take the heading navy, because the link blue is 4.3:1 on this
   fill and fails AA. */
.callout {
  background: var(--surface-selected);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-5) 28px;
  color: var(--text-body);
  max-width: 74ch;
}
.callout > * + * { margin-top: var(--space-3); }
.callout:not(.callout--quiet) a { color: var(--text-heading); }
.callout__title {
  font-family: var(--font-heading);
  font-size: var(--size-lead);
  font-weight: var(--weight-semibold);
  line-height: 1.3;
  color: var(--text-heading);
}
/* Mist instead of Primary 100: a quieter aside, where the link blue clears AA
   again (4.9:1). */
.callout--quiet { background: var(--surface-raised); }
/* A caution the reader must not skim past: the same fill, a strong border. */
.callout--strong { border-color: var(--border-strong); }

/* System feedback only — a failed request, a saved change. Never a data
   state: a company's figures are never red or green (BRAND.md §3). The text
   says what happened; the colour only repeats it. */
.status {
  padding: var(--space-4) var(--space-5);
  background: var(--surface-page);
  border: var(--border-width) solid var(--border-default);
  border-left: 3px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: var(--size-body);
  line-height: var(--leading-lead);
  color: var(--text-body);
}
.status--error { border-left-color: var(--border-error); color: var(--text-error); }
.status--success { border-left-color: var(--border-success); color: var(--text-success); }

/* --------------------------------------------------------------------------
   9. Badges
   Caption size on a pill. Only .badge--signal is amber, and only for an
   elevated succession signal; it always carries its text label.
   -------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 9px;
  font-size: var(--size-caption);
  font-weight: var(--weight-medium);
  line-height: var(--leading-caption);
  color: var(--text-body);
  background: var(--surface-page);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.badge--signal {
  color: var(--text-inverted);
  background: var(--surface-signal);
  border-color: var(--border-signal);
}
.badge--signal::before {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: currentColor;
}
.badge--strong { color: var(--text-heading); border-color: var(--border-strong); }
.badge--inverted {
  color: var(--text-inverted);
  background: var(--surface-inverted);
  border-color: var(--surface-inverted);
}
.badge--selected { background: var(--surface-selected); }
.badge--muted { color: var(--text-muted); }
.badge--dashed { border-style: dashed; }

/* --------------------------------------------------------------------------
   10. Tables
   1px horizontal rules only; Mist header row; Primary 50 on hover.
   -------------------------------------------------------------------------- */

.table { width: 100%; border-collapse: collapse; background: var(--surface-page); }
.table th {
  padding: 10px 12px;
  font-size: var(--size-caption);
  font-weight: var(--weight-medium);
  line-height: var(--leading-caption);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  text-align: left;
  white-space: nowrap;
  color: var(--text-muted);
  background: var(--surface-raised);
  border-bottom: var(--border-width) solid var(--border-default);
}
.table td {
  padding: 12px;
  vertical-align: top;
  border-bottom: var(--border-width) solid var(--border-default);
}
.table tbody tr:hover > td { background: var(--surface-hover); }
.table .num { text-align: right; }
.table-scroll { overflow-x: auto; }

/* --------------------------------------------------------------------------
   11. Dialogs
   A 1px border and a scrim. No shadow.
   -------------------------------------------------------------------------- */

dialog {
  width: calc(100% - 40px);
  max-width: 720px;
  padding: 0;
  color: var(--text-body);
  background: var(--surface-page);
  border: var(--border-width) solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: none;
}
dialog::backdrop { background: var(--surface-scrim); }
.dialog__body { padding: var(--space-6); }
.dialog__title {
  font-size: var(--size-h4);
  line-height: 1.3;
  margin: 0 0 var(--space-2);
}

/* --------------------------------------------------------------------------
   12. Site footer
   Carries the statutory attribution line and the data-controller line, in
   BRAND.md §2's exact wording, on every public page.
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--surface-page);
  border-top: var(--border-width) solid var(--border-default);
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding-top: var(--space-7);
  padding-bottom: var(--space-7);
}
.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-5) var(--space-6);
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) 20px;
  font-size: var(--size-body);
}
.site-footer__legal {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 80ch;
  padding-top: var(--space-5);
  border-top: var(--border-width) solid var(--border-default);
}
.site-footer__legal p {
  max-width: none;
  font-size: var(--size-caption);
  line-height: var(--leading-lead);
  color: var(--text-muted);
}
/* The product pages' footer: the two statutory lines and nothing else, so
   no rule is needed above them. */
.site-footer__legal--solo { padding-top: 0; border-top: 0; }

/* --------------------------------------------------------------------------
   13. Motion and print
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media print {
  .site-header, .mobile-menu, .site-footer__links, .nav-burger { display: none !important; }
  .callout, .card, .status { background: transparent; }
}