/* kns-wwa — component styles for the closed OBSERVER catalog (S2).
 *
 * One block per catalog component: page, header, nav, footer, hero, text,
 * tile_grid/tile, card, form/field/button, alert, empty_state, badge.
 */

/* --- page / reset --------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(1200px 480px at 50% -160px, var(--kn-paper), transparent 70%),
    var(--kn-ivory);
  color: var(--kn-ink);
  font-family: var(--kn-font-body);
  font-size: var(--kn-fs-body);
  line-height: var(--kn-lh);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--kn-font-display);
  font-weight: 600;
  line-height: var(--kn-lh-tight);
  letter-spacing: var(--kn-ls-tight);
  color: var(--kn-ink);
}

a { color: var(--kn-accent-strong); }

:focus-visible { outline: none; box-shadow: var(--kn-focus); border-radius: var(--kn-r-sm); }

/* --- header --------------------------------------------------------- */
.kn-header {
  background: linear-gradient(180deg, var(--kn-paper), rgba(255, 253, 248, 0.6));
  border-bottom: 1px solid var(--kn-line);
}
.kn-header__inner {
  max-width: var(--kn-max);
  margin: 0 auto;
  padding: var(--kn-s5) var(--kn-s4) var(--kn-s3);
}
.kn-header__brand {
  display: inline-block;
  font-family: var(--kn-font-display);
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: var(--kn-ls-tight);
  color: var(--kn-ink);
  text-decoration: none;
}
.kn-header__brand::after {
  content: "";
  display: block;
  width: 2.6rem;
  height: 3px;
  margin-top: 0.45rem;
  background: var(--kn-accent);
  border-radius: 2px;
}
.kn-header__subtitle {
  margin: 0.7rem 0 0;
  color: var(--kn-muted);
  font-size: var(--kn-fs-small);
  letter-spacing: 0.02em;
}

/* --- nav ------------------------------------------------------------ */
.kn-nav {
  background: var(--kn-paper);
  border-bottom: 1px solid var(--kn-line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.kn-nav__inner {
  max-width: var(--kn-max);
  margin: 0 auto;
  padding: 0 var(--kn-s4);
  display: flex;
  align-items: center;
  gap: var(--kn-s2);
  min-height: 3rem;
  flex-wrap: wrap;
}
.kn-nav__link {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  color: var(--kn-ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  border-radius: var(--kn-r-sm);
  transition: color var(--kn-speed) var(--kn-ease), background var(--kn-speed) var(--kn-ease);
}
.kn-nav__link:hover { color: var(--kn-accent-strong); background: var(--kn-accent-soft); }
.kn-nav__logout { margin-left: auto; }

/* --- content column ------------------------------------------------- */
main,
.kn-hero, .kn-tiles, .kn-text, .kn-empty { width: 100%; }

.kn-content { max-width: var(--kn-max); margin: 0 auto; padding: 0 var(--kn-s4); }

/* --- hero ----------------------------------------------------------- */
.kn-hero {
  max-width: var(--kn-max);
  margin: 0 auto;
  padding: var(--kn-s6) var(--kn-s4) var(--kn-s4);
}
.kn-hero__title {
  margin: var(--kn-s2) 0 0;
  font-size: var(--kn-fs-hero);
}
.kn-hero__lead {
  margin: var(--kn-s3) 0 0;
  max-width: 42rem;
  color: var(--kn-ink-soft);
  font-size: 1.12rem;
}
.kn-hero__actions {
  margin-top: var(--kn-s4);
  display: flex;
  gap: var(--kn-s3);
  flex-wrap: wrap;
}

/* --- text ----------------------------------------------------------- */
.kn-text {
  max-width: var(--kn-max);
  margin: 0 auto var(--kn-s3);
  padding: 0 var(--kn-s4);
  color: var(--kn-ink-soft);
}

/* --- tiles ---------------------------------------------------------- */
.kn-tiles {
  max-width: var(--kn-max);
  margin: var(--kn-s4) auto var(--kn-s6);
  padding: 0 var(--kn-s4);
}
.kn-tiles__heading {
  margin: 0 0 var(--kn-s3);
  font-size: var(--kn-fs-h2);
}
.kn-tiles__grid {
  display: grid;
  gap: var(--kn-s3);
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}
.kn-tile {
  display: flex;
  flex-direction: column;
  gap: var(--kn-s2);
  padding: var(--kn-s4);
  background: var(--kn-paper);
  border: 1px solid var(--kn-line);
  border-radius: var(--kn-r-lg);
  box-shadow: var(--kn-shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: transform var(--kn-speed) var(--kn-ease),
              border-color var(--kn-speed) var(--kn-ease),
              box-shadow var(--kn-speed) var(--kn-ease);
}
.kn-tile:hover {
  transform: translateY(-3px);
  border-color: var(--kn-line-strong);
  box-shadow: var(--kn-shadow);
}
.kn-tile__head { display: flex; align-items: baseline; gap: var(--kn-s2); flex-wrap: wrap; }
.kn-tile__title {
  font-family: var(--kn-font-display);
  font-size: var(--kn-fs-h3);
  font-weight: 600;
}
.kn-tile__body { margin: 0; color: var(--kn-muted); font-size: 0.96rem; }
.kn-tile--soon { border-style: dashed; background: linear-gradient(180deg, var(--kn-paper), var(--kn-ivory)); }

/* --- card ----------------------------------------------------------- */
.kn-card {
  max-width: 34rem;
  margin: var(--kn-s4) auto;
  padding: var(--kn-s5);
  background: var(--kn-paper);
  border: 1px solid var(--kn-line);
  border-radius: var(--kn-r-lg);
  box-shadow: var(--kn-shadow);
}
.kn-card__title { margin: 0 0 var(--kn-s2); font-size: var(--kn-fs-h2); }
.kn-card__body { margin: 0 0 var(--kn-s3); color: var(--kn-muted); }

/* --- form / field / button ----------------------------------------- */
.kn-form { display: flex; flex-direction: column; gap: var(--kn-s3); margin-top: var(--kn-s3); }
.kn-field { display: flex; flex-direction: column; gap: var(--kn-s1); }
.kn-field__label { font-size: var(--kn-fs-small); font-weight: 600; color: var(--kn-ink-soft); letter-spacing: 0.01em; }
.kn-field__input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font: inherit;
  color: var(--kn-ink);
  background: var(--kn-paper);
  border: 1px solid var(--kn-line-strong);
  border-radius: var(--kn-r);
  transition: border-color var(--kn-speed) var(--kn-ease), box-shadow var(--kn-speed) var(--kn-ease);
}
.kn-field__input::placeholder { color: #a8ada6; }
.kn-field__input:focus { outline: none; border-color: var(--kn-accent); box-shadow: var(--kn-focus); }

.kn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kn-s1);
  padding: 0.68rem 1.15rem;
  font: inherit;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--kn-r);
  cursor: pointer;
  transition: transform var(--kn-speed) var(--kn-ease),
              background var(--kn-speed) var(--kn-ease),
              border-color var(--kn-speed) var(--kn-ease);
}
.kn-btn:active { transform: translateY(1px); }
.kn-btn--primary { background: var(--kn-accent); color: #fff; box-shadow: var(--kn-shadow-sm); }
.kn-btn--primary:hover { background: var(--kn-accent-strong); }
.kn-btn--ghost { background: transparent; color: var(--kn-ink-soft); border-color: var(--kn-line-strong); }
.kn-btn--ghost:hover { color: var(--kn-accent-strong); border-color: var(--kn-accent); background: var(--kn-accent-soft); }
.kn-btn--sm { padding: 0.42rem 0.8rem; font-size: var(--kn-fs-small); }

/* --- alert ---------------------------------------------------------- */
.kn-alert {
  margin: 0 0 var(--kn-s3);
  padding: 0.7rem 0.9rem;
  border-radius: var(--kn-r);
  font-size: 0.94rem;
  border: 1px solid transparent;
}
.kn-alert--error { background: var(--kn-danger-soft); color: var(--kn-danger); border-color: #e6c7c1; }
.kn-alert--info  { background: var(--kn-info-soft); color: var(--kn-info); border-color: #c8d7e4; }
.kn-alert--success { background: var(--kn-accent-soft); color: var(--kn-accent-strong); border-color: #c4ddcd; }

/* --- empty state ---------------------------------------------------- */
.kn-empty {
  text-align: center;
  padding: var(--kn-s5) var(--kn-s3);
  color: var(--kn-ink-soft);
}
.kn-empty__title { margin: var(--kn-s2) 0 0; font-size: var(--kn-fs-h3); }
.kn-empty__body { margin: var(--kn-s2) auto 0; max-width: 30rem; color: var(--kn-muted); }

/* --- badge ---------------------------------------------------------- */
.kn-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--kn-accent-strong);
  background: var(--kn-accent-soft);
  border-radius: 999px;
}
.kn-badge--soon { color: var(--kn-soon); background: var(--kn-soon-soft); }

/* --- footer --------------------------------------------------------- */
.kn-footer {
  margin-top: auto;
  border-top: 1px solid var(--kn-line);
  background: var(--kn-paper);
}
.kn-footer__inner {
  max-width: var(--kn-max);
  margin: 0 auto;
  padding: var(--kn-s4);
  display: flex;
  gap: var(--kn-s4);
  flex-wrap: wrap;
}
.kn-footer__line { margin: 0; color: var(--kn-muted); font-size: var(--kn-fs-small); }

@media (max-width: 40rem) {
  .kn-header__inner { padding-top: var(--kn-s4); }
  .kn-card { max-width: none; margin: var(--kn-s3) var(--kn-s3); padding: var(--kn-s4); }
}

/* ====================================================================
   S3 additions — public content surfaces + admin authoring
   ==================================================================== */

/* --- card / form width variants ------------------------------------- */
.kn-card--wide { max-width: var(--kn-max); }
.kn-form--wide { max-width: none; }

/* --- form: hint / textarea / file / danger button ------------------- */
.kn-field__hint { font-size: var(--kn-fs-small); color: var(--kn-muted); }
.kn-field__textarea {
  min-height: 8rem;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95rem;
  line-height: 1.5;
}
.kn-field__file { padding: 0.5rem 0; border-style: dashed; }
.kn-btn--danger { background: var(--kn-danger); color: #fff; box-shadow: var(--kn-shadow-sm); }
.kn-btn--danger:hover { background: #6f2424; }

/* --- markdown body -------------------------------------------------- */
.kn-markdown { color: var(--kn-ink-soft); }
.kn-markdown > :first-child { margin-top: 0; }
.kn-markdown > :last-child { margin-bottom: 0; }
.kn-markdown h1, .kn-markdown h2, .kn-markdown h3 { margin: var(--kn-s4) 0 var(--kn-s2); }
.kn-markdown h1 { font-size: 1.8rem; }
.kn-markdown h2 { font-size: var(--kn-fs-h2); }
.kn-markdown h3 { font-size: var(--kn-fs-h3); }
.kn-markdown p { margin: 0 0 var(--kn-s3); line-height: var(--kn-lh); }
.kn-markdown ul, .kn-markdown ol { margin: 0 0 var(--kn-s3); padding-left: 1.4rem; }
.kn-markdown li { margin: 0.2rem 0; }
.kn-markdown a { color: var(--kn-accent-strong); text-underline-offset: 2px; }
.kn-markdown blockquote {
  margin: 0 0 var(--kn-s3); padding: 0.4rem var(--kn-s3);
  border-left: 3px solid var(--kn-line-strong); color: var(--kn-muted);
}
.kn-markdown code {
  background: var(--kn-accent-soft); padding: 0.1rem 0.35rem; border-radius: var(--kn-r-sm);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em;
}
.kn-markdown pre {
  background: #10160f; color: #e9efe6; padding: var(--kn-s3);
  border-radius: var(--kn-r); overflow-x: auto;
}
.kn-markdown pre code { background: transparent; padding: 0; color: inherit; }
.kn-markdown hr { border: 0; border-top: 1px solid var(--kn-line); margin: var(--kn-s4) 0; }

/* --- media grid / items --------------------------------------------- */
.kn-media {
  max-width: var(--kn-max); margin: var(--kn-s4) auto var(--kn-s6); padding: 0 var(--kn-s4);
}
.kn-media__heading { margin: 0 0 var(--kn-s3); font-size: var(--kn-fs-h2); }
.kn-media__grid {
  display: grid; gap: var(--kn-s3);
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
}
.kn-mediaitem {
  display: flex; flex-direction: column; gap: var(--kn-s2);
  text-decoration: none; color: inherit;
}
.kn-mediaitem__frame {
  position: relative; display: block; aspect-ratio: 4 / 3; overflow: hidden;
  background: var(--kn-accent-soft); border: 1px solid var(--kn-line);
  border-radius: var(--kn-r-lg); box-shadow: var(--kn-shadow-sm);
  transition: transform var(--kn-speed) var(--kn-ease), box-shadow var(--kn-speed) var(--kn-ease);
}
.kn-mediaitem:hover .kn-mediaitem__frame { transform: translateY(-3px); box-shadow: var(--kn-shadow); }
.kn-mediaitem__img { width: 100%; height: 100%; object-fit: cover; display: block; }
.kn-mediaitem__ph {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%;
  font-family: var(--kn-font-display); font-size: 2.6rem; font-weight: 600;
  color: var(--kn-accent-strong); background: linear-gradient(160deg, var(--kn-paper), var(--kn-accent-soft));
}
.kn-mediaitem__play {
  position: absolute; inset: auto auto var(--kn-s2) var(--kn-s2);
  padding: 0.15rem 0.55rem; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: #fff; background: rgba(23, 32, 26, 0.78); border-radius: 999px;
}
.kn-mediaitem__count {
  position: absolute; inset: var(--kn-s2) var(--kn-s2) auto auto;
  padding: 0.15rem 0.55rem; font-size: 0.72rem; font-weight: 700;
  color: var(--kn-accent-strong); background: var(--kn-paper); border-radius: 999px;
}
.kn-mediaitem__title { font-family: var(--kn-font-display); font-size: var(--kn-fs-h3); font-weight: 600; }
.kn-mediaitem__caption { margin: 0; color: var(--kn-muted); font-size: var(--kn-fs-small); }

/* --- video player --------------------------------------------------- */
.kn-player { margin: 0; display: flex; flex-direction: column; gap: var(--kn-s2); }
.kn-player__video {
  width: 100%; display: block; background: #000;
  border-radius: var(--kn-r-lg); box-shadow: var(--kn-shadow);
}
.kn-player__caption { color: var(--kn-muted); font-size: var(--kn-fs-small); }

/* --- list ----------------------------------------------------------- */
.kn-list-wrap { max-width: var(--kn-max); margin: var(--kn-s4) auto var(--kn-s6); padding: 0 var(--kn-s4); }
.kn-list__heading { margin: 0 0 var(--kn-s3); font-size: var(--kn-fs-h2); }
.kn-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--kn-s2); }
.kn-list__item {
  padding: var(--kn-s3) var(--kn-s4); background: var(--kn-paper);
  border: 1px solid var(--kn-line); border-radius: var(--kn-r); box-shadow: var(--kn-shadow-sm);
}
.kn-list__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--kn-s3); flex-wrap: wrap; }
.kn-list__title { font-family: var(--kn-font-display); font-size: var(--kn-fs-h3); font-weight: 600; color: var(--kn-ink); text-decoration: none; }
.kn-list__title:hover { color: var(--kn-accent-strong); text-decoration: underline; text-underline-offset: 2px; }
.kn-list__meta { color: var(--kn-muted); font-size: var(--kn-fs-small); white-space: nowrap; }
.kn-list__body { margin: var(--kn-s2) 0 0; color: var(--kn-muted); }

/* --- data table ----------------------------------------------------- */
.kn-table__wrap { overflow-x: auto; margin: var(--kn-s3) 0 0; }
.kn-table { border-collapse: collapse; width: 100%; font-size: 0.96rem; }
.kn-table th, .kn-table td {
  text-align: left; padding: 0.55rem 0.75rem; border-bottom: 1px solid var(--kn-line);
}
.kn-table thead th { background: var(--kn-accent-soft); color: var(--kn-accent-strong); font-weight: 600; }
.kn-table tbody tr:nth-child(even) { background: rgba(230, 222, 208, 0.25); }

/* --- forum posts ---------------------------------------------------- */
.kn-posts { max-width: var(--kn-max); margin: var(--kn-s3) auto; padding: 0 var(--kn-s4); display: flex; flex-direction: column; gap: var(--kn-s3); }
.kn-posts__heading { margin: 0 0 var(--kn-s2); font-size: var(--kn-fs-h2); }
.kn-post {
  background: var(--kn-paper); border: 1px solid var(--kn-line);
  border-radius: var(--kn-r); box-shadow: var(--kn-shadow-sm); padding: var(--kn-s3) var(--kn-s4);
}
.kn-post__head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--kn-s3); flex-wrap: wrap; margin-bottom: var(--kn-s2); }
.kn-post__author { font-family: var(--kn-font-display); font-weight: 600; color: var(--kn-ink); }
.kn-post__when { color: var(--kn-muted); font-size: var(--kn-fs-small); white-space: nowrap; }

/* --- polls ---------------------------------------------------------- */
.kn-polls { max-width: var(--kn-max); margin: var(--kn-s3) auto; padding: 0 var(--kn-s4); display: flex; flex-direction: column; gap: var(--kn-s3); }
.kn-polls__heading { margin: 0 0 var(--kn-s2); font-size: var(--kn-fs-h2); }
.kn-poll {
  background: var(--kn-paper); border: 1px solid var(--kn-line);
  border-radius: var(--kn-r); box-shadow: var(--kn-shadow-sm); padding: var(--kn-s3) var(--kn-s4);
}
.kn-poll__q { margin: 0; font-size: var(--kn-fs-h3); color: var(--kn-ink); }
.kn-poll__meta { margin: var(--kn-s2) 0 var(--kn-s3); color: var(--kn-muted); font-size: var(--kn-fs-small); }
.kn-poll__results { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--kn-s2); }
.kn-pollrow { display: grid; grid-template-columns: 1fr; gap: 0.2rem; }
.kn-pollrow__label { font-size: var(--kn-fs-small); color: var(--kn-ink-soft); }
.kn-pollrow__track { display: block; height: 0.7rem; background: var(--kn-line); border-radius: 999px; overflow: hidden; }
.kn-pollrow__bar { display: block; height: 100%; background: var(--kn-accent); border-radius: 999px; }
.kn-pollrow__count { font-size: var(--kn-fs-small); color: var(--kn-muted); }
.kn-pollrow--mine .kn-pollrow__bar { background: var(--kn-accent-strong); }
.kn-pollrow--mine .kn-pollrow__label { font-weight: 600; color: var(--kn-accent-strong); }
.kn-poll__form { display: flex; flex-direction: column; gap: var(--kn-s2); align-items: flex-start; }
.kn-pollopt { display: flex; align-items: center; gap: var(--kn-s2); color: var(--kn-ink-soft); }
.kn-poll__actions { display: flex; gap: var(--kn-s2); flex-wrap: wrap; margin-top: var(--kn-s3); }
.kn-poll__close { margin: 0; }

/* --- todo lists ----------------------------------------------------- */
.kn-todos-wrap { max-width: var(--kn-max); margin: var(--kn-s3) auto; padding: 0 var(--kn-s4); }
.kn-todos__heading { margin: 0 0 var(--kn-s2); font-size: var(--kn-fs-h2); }
.kn-todos { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--kn-s2); }
.kn-todo {
  display: flex; align-items: center; gap: var(--kn-s3);
  padding: var(--kn-s2) var(--kn-s3); background: var(--kn-paper);
  border: 1px solid var(--kn-line); border-radius: var(--kn-r); box-shadow: var(--kn-shadow-sm);
}
.kn-todo__form { margin: 0; }
.kn-todo__check {
  width: 1.6rem; height: 1.6rem; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--kn-line-strong); border-radius: var(--kn-r-sm);
  background: var(--kn-ivory); color: var(--kn-accent-strong); cursor: pointer;
  font-size: 1rem; line-height: 1;
}
.kn-todo__check--static { cursor: default; }
.kn-todo__title { flex: 1; color: var(--kn-ink); }
.kn-todo__meta { color: var(--kn-muted); font-size: var(--kn-fs-small); text-align: right; }
.kn-todo--done .kn-todo__title { text-decoration: line-through; color: var(--kn-muted); }
.kn-todo--done .kn-todo__check { background: var(--kn-accent-soft); border-color: var(--kn-accent); }

/* --- grants / members / invites ------------------------------------- */
.kn-grants-wrap { margin: 0; }
.kn-grants { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--kn-s2); }
.kn-grant {
  display: flex; align-items: center; gap: var(--kn-s3); flex-wrap: wrap;
  padding: var(--kn-s2) var(--kn-s3); border: 1px solid var(--kn-line); border-radius: var(--kn-r);
  background: var(--kn-paper);
}
.kn-grant__label { font-weight: 600; color: var(--kn-ink); }
.kn-grant__meta { color: var(--kn-muted); font-size: var(--kn-fs-small); }
.kn-grant__link { flex: 1 1 100%; color: var(--kn-accent-strong); font-size: var(--kn-fs-small); word-break: break-all; }
.kn-grant__form { margin: 0 0 0 auto; }