/*
  Library page — extends assets/style.css.

  Layout:
    .lib        page container (max-width 1280, two-column at >=900)
    .lib__head  page heading
    .lib__search-wrap     sticky search bar
    .lib__filters         row of selects + reset button
    .lib__cols            grid: [sidebar | main]
    .lib__side            project + tag sidebar (desktop only)
    .lib__main            scroll area of doc groups

  Visual canon: Geist Mono + Inter, hard 90° corners, canonical greys.
  No claimed hue. Interactive feedback uses --ink-mid.
*/

.lib {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 32px 96px;
}

.lib__head {
  margin: 0 0 24px;
}

.lib__count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-mid);
  letter-spacing: 0.02em;
  display: inline-block;
  margin-left: 4px;
}

/* ---------- Search ---------- */

.lib__search-wrap {
  position: sticky;
  top: 0;
  z-index: 30;
  margin: 0 0 16px;
  padding: 12px 0;
  background: var(--page-bg);
  border-bottom: 1px solid var(--rule);
}

.lib__search-label {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--tone-1);
  border: 1px solid var(--rule);
  border-radius: var(--radius-brand);
  padding: 0 14px;
  transition: border-color 120ms ease;
}

.lib__search-label:focus-within {
  border-color: var(--ink-dark);
}

.lib__search-prompt {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 16px;
  color: var(--ink-mid);
  user-select: none;
}

.lib__search {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  padding: 14px 0;
  color: var(--ink-dark);
  font-family: var(--sans);
  font-size: 16px;          /* iOS no-zoom floor */
  line-height: 1.4;
}

.lib__search::placeholder { color: var(--ink-mid); }

.lib__search-kbd {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mid);
  border: 1px solid var(--rule);
  padding: 2px 6px;
  border-radius: 2px;
  user-select: none;
}

.lib__search-label:focus-within .lib__search-kbd {
  opacity: 0;
}

/* ---------- Filter row ---------- */

.lib__filters {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 24px;
  flex-wrap: wrap;
  padding-top: 4px;
}

.lib__filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.lib__filter-key {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-mid);
}

.lib__select {
  background: transparent;
  color: var(--ink-dark);
  border: 1px solid var(--rule);
  border-radius: var(--radius-brand);
  font-family: var(--mono);
  font-size: 13px;
  padding: 6px 10px;
  cursor: pointer;
  transition: border-color 120ms ease;

  /* let it draw the native arrow but make it look right against dark bg */
  -webkit-appearance: none;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-mid) 50%),
                    linear-gradient(135deg, var(--ink-mid) 50%, transparent 50%);
  background-position: calc(100% - 14px) 12px, calc(100% - 9px) 12px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 26px;
}

.lib__select:focus {
  outline: none;
  border-color: var(--ink-dark);
}

.lib__reset {
  background: transparent;
  color: var(--ink-mid);
  border: 1px solid var(--rule);
  border-radius: var(--radius-brand);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 6px 10px;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
}

.lib__reset:hover {
  color: var(--ink-dark);
  border-color: var(--ink-mid);
}

.lib__filter--mobile-proj { display: none; }

/* ---------- Two-column body ---------- */

.lib__cols {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: start;
}

.lib__side {
  position: sticky;
  top: 90px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding-right: 8px;
  border-right: 1px solid var(--rule);
}

.lib__side-head {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mid);
  margin: 0 0 12px;
  font-weight: 500;
}

.lib__side-head--tags { margin-top: 28px; }

.lib__side-list {
  list-style: none;
  padding: 0;
  margin: 0 0 8px;
}

.lib__side-item {
  margin: 0;
  padding: 0;
}

.lib__side-btn {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  width: 100%;
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  color: var(--ink-mid);
  font-family: var(--mono);
  font-size: 13px;
  text-align: left;
  padding: 6px 8px;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
}

.lib__side-btn:hover {
  color: var(--ink-dark);
  background: var(--tone-1);
}

.lib__side-btn[aria-current="true"] {
  color: var(--ink-dark);
  border-left-color: var(--ink-dark);
  background: var(--tone-1);
}

.lib__side-btn-count {
  font-size: 11px;
  color: var(--ink-mid);
  margin-left: 8px;
}

.lib__side-list--tags .lib__side-btn {
  font-size: 12px;
}

/* ---------- Main pane ---------- */

.lib__main {
  min-width: 0;
}

.lib__group {
  margin: 0 0 40px;
}

.lib__group:first-of-type { margin-top: 4px; }

.lib__group-head {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mid);
  margin: 0 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.lib__group-count {
  font-size: 11px;
  color: var(--ink-mid);
}

.lib__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--rule);     /* the gap between cards reads as a hairline */
  border: 1px solid var(--rule);
  border-radius: var(--radius-brand);
}

.lib__card {
  display: block;
  padding: 16px 18px;
  background: var(--page-bg);
  text-decoration: none;
  color: var(--ink-dark);
  transition: background 120ms ease;
  position: relative;
}

.lib__card:hover {
  background: var(--tone-1);
  text-decoration: none;
}

.lib__card.is-focused {
  background: var(--tone-1);
  outline: 1px solid var(--ink-mid);
  outline-offset: -1px;
}

.lib__card-row1 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0 0 6px;
}

.lib__card-title {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 15px;
  color: var(--ink-dark);
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}

.lib__card-date {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mid);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.lib__card-row2 {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0 0 6px;
}

.lib__card-summary {
  margin: 0;
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-dark);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.lib__card-summary--empty {
  color: var(--ink-mid);
  font-style: italic;
}

/* Chips (project / type / visibility / tags) — all the same shape, different
   weights via the modifier class. */
.lib__chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-mid);
  padding: 2px 7px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-brand);
  white-space: nowrap;
  line-height: 1.3;
  user-select: none;
}

.lib__chip--proj {
  color: var(--ink-dark);
  border-color: var(--ink-mid);
}

.lib__chip--public {
  color: var(--ink-dark);
  border-color: var(--ink-dark);
}

.lib__chip--gated {
  color: var(--ink-mid);
  border-color: var(--ink-mid);
  border-style: dashed;
}

.lib__chip--tag {
  font-size: 10px;
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--rule);
}

.lib__chip--tag:hover {
  border-color: var(--ink-mid);
  color: var(--ink-dark);
}

/* Tooltip / inline notice for gated items */
.lib__card--gated {
  cursor: default;
}

.lib__card--gated:hover {
  background: var(--tone-1);
}

.lib__gated-notice {
  display: none;
  margin-top: 8px;
  padding: 8px 10px;
  background: var(--tone-2);
  border: 1px dashed var(--ink-mid);
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-mid);
  line-height: 1.4;
}

.lib__card--gated.is-expanded .lib__gated-notice {
  display: block;
}

/* ---------- Hint / empty states ---------- */

.lib__hint {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-mid);
  padding: 32px 0;
  text-align: center;
}

.lib__footnote {
  margin-top: 56px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mid);
  letter-spacing: 0.02em;
}

.lib__footnote code {
  background: var(--tone-1);
  padding: 1px 5px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-brand);
  color: var(--ink-dark);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .lib { padding: 24px 18px 64px; }

  .lib__cols {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .lib__side { display: none; }
  .lib__filter--mobile-proj { display: inline-flex; }

  .lib__search-wrap {
    margin-bottom: 14px;
    padding: 10px 0;
  }
  .lib__search { font-size: 16px; }   /* keep iOS happy */
  .lib__search-kbd { display: none; }

  .lib__card-summary { -webkit-line-clamp: 1; }
  .lib__card.is-expanded .lib__card-summary { -webkit-line-clamp: unset; }

  .lib__card { padding: 14px 14px; }
  .lib__card-title { font-size: 14px; }
}

@media (max-width: 480px) {
  .lib { padding: 18px 12px 48px; }
  .lib__filters { gap: 8px; }
  .lib__filter-key { display: none; }
  .lib__select { font-size: 12px; padding: 5px 22px 5px 8px; }
}

/* ---------- Print: useful library listing ---------- */

@media print {
  .lib__search-wrap, .lib__filters, .lib__side, .lib__footnote,
  .topbar, .footer {
    display: none !important;
  }
  .lib__cols { grid-template-columns: 1fr; }
  .lib__cards { border: 0; gap: 0; background: transparent; }
  .lib__card {
    background: transparent;
    border-bottom: 1px solid #ccc;
    padding: 8px 0;
    page-break-inside: avoid;
  }
  .lib__card-summary { -webkit-line-clamp: unset; overflow: visible; }
}