/* ==========================================================================
   LINCHPIN — Codex (Linchpins Directory)
   Stacked single-column directory with client-side name filter.
   Uses global tokens only — palette + dark mode inherit automatically.
   Icons inherit colour via currentColor (charcoal → warm white in dark).
   ========================================================================== */

.lp-codex {
  padding-block: 2rem 6rem;
}

.lp-codex__container {
  max-width: 820px;
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ---- Search / filter ---- */
.lp-codex__search {
  margin-bottom: 2rem;
}

.lp-codex__search-label {
  /* Visually hidden, kept for assistive tech */
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.lp-codex__search-input {
  width: 100%;
  font-family: var(--font-ui);
  font-size: var(--text-nav);
  font-weight: 400;
  line-height: var(--leading-ui);
  color: var(--color-text);
  background-color: var(--color-bg-elevated);
  border: 0.5px solid var(--color-border);
  border-radius: 2px;
  padding: 0.85rem 1rem;
  transition: var(--transition-theme), border-color var(--transition-hover);
}

.lp-codex__search-input::placeholder {
  color: var(--color-text-meta);
}

.lp-codex__search-input:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-color: var(--color-focus);
}

/* ---- Sort toggle (feature-flagged) ---- */
.lp-codex__sort {
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* Pull up under the search box. Search keeps its 2rem bottom margin,
     which also governs spacing when the sort control is hidden. */
  margin-top: -1.25rem;
  margin-bottom: 2rem;
}

.lp-codex__sort-btn {
  font-family: var(--font-ui);
  font-size: var(--text-nav);
  font-weight: var(--weight-nav);
  line-height: 1;
  color: var(--color-text-muted);
  background: none;
  border: none;
  padding: 0.4rem 0.7rem;
  border-radius: 2px;
  cursor: pointer;
  transition: color var(--transition-hover), background-color var(--transition-hover);
}

.lp-codex__sort-btn:hover {
  color: var(--color-text);
}

/* Active state mirrors the site's active nav: Straw fill, Charcoal text */
.lp-codex__sort-btn.is-active {
  background-color: var(--color-nav-active-bg);
  color: var(--color-nav-active-text);
}

.lp-codex__sort-btn:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---- List ---- */
.lp-codex__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-divider);
}

.lp-codex__item {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1.75rem;
  border-bottom: var(--border-divider);
}

/* Items hidden by the filter */
.lp-codex__item[hidden] {
  display: none;
}

/* ---- Row 1: identity (left-aligned) ---- */
.lp-codex__identity {
  text-align: left;
  min-width: 0;
}

.lp-codex__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-h3);
  line-height: var(--leading-heading);
  color: var(--color-text);
  margin: 0;
  /* Names are proper nouns — kept in Title Case as entered */
  text-transform: none;
}

/* Name link inherits the standard animated-link colours + hover
   from .lp-anim-link in globals (crimson underline, crimson on hover). */
.lp-codex__name-link {
  color: inherit;
}

.lp-codex__designation {
  font-family: var(--font-body);
  font-weight: var(--weight-body);
  font-size: var(--text-body);
  line-height: 1.5;
  color: var(--color-text);
  margin: 0.4rem 0 0;
}

/* ---- Row 2: socials (right-aligned) ---- */
.lp-codex__socials {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
  flex-shrink: 0;
}

.lp-codex__social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;            /* hit area — larger than the 32px article share icons */
  height: 44px;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 50%;
  transition: color var(--transition-hover), background-color var(--transition-hover);
}

.lp-codex__social-icon svg {
  width: 24px;            /* glyph — larger than the ~18px article share glyphs */
  height: 24px;
  display: block;
}

.lp-codex__social-icon:hover {
  color: var(--color-accent);
  background-color: rgba(54, 69, 79, 0.08);
}

.lp-codex__social-icon:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---- Empty / no-results ---- */
.lp-codex__empty {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-text-muted);
  padding-block: 2rem;
  margin: 0;
}

.lp-codex__empty[hidden] {
  display: none;
}

/* ==========================================================================
   DARK MODE
   Token-driven, so only the hover wash (built on charcoal rgba) needs a remap.
   ========================================================================== */

[data-theme="dark"] .lp-codex__social-icon:hover {
  background-color: rgba(250, 250, 245, 0.10);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .lp-codex__social-icon:hover {
    background-color: rgba(250, 250, 245, 0.10);
  }
  [data-theme="system"] .lp-codex__social-icon:hover {
    background-color: rgba(250, 250, 245, 0.10);
  }
}

/* ==========================================================================
   RESPONSIVE — mobile-first scale-down (≤768px)
   ========================================================================== */

@media (max-width: 768px) {
  .lp-codex {
    padding-block: 1.5rem 4rem;
  }

  .lp-codex__container {
    padding-inline: var(--container-padding-mobile);
  }

  .lp-codex__item {
    /* Name + up to 10 icons won't share a row on narrow screens — stack */
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .lp-codex__name {
    font-size: 20px;
  }

  .lp-codex__designation {
    font-size: 16px;
  }

  .lp-codex__socials {
    /* Stacked below identity, icons stay right-aligned */
    justify-content: flex-end;
  }
}

/* Reduced motion: drop colour/background transitions */
@media (prefers-reduced-motion: reduce) {
  .lp-codex__search-input,
  .lp-codex__name-link,
  .lp-codex__social-icon {
    transition: none;
  }
}