/* Spellbook page (epic 3 wave 3.1) + popup overlay (kenku-bg6). */
/* Tavern Chronicle redesign — layout волна: group-headers + collapsible rows. */

/* ============ /spellbook standalone page ============ */

/* локальные spacing-токены (см. DESIGN.md scale) — переедут в styles.css на colorize-волне.
   Объявляем на .spellbook-body (standalone — покрывает и topbar и page) и на
   .sb-popup (модал на листе), чтобы spellbook-стили работали в обоих контекстах. */
.spellbook-body,
.modal--book.sb-popup {
  --sb-space-xs: 4px;
  --sb-space-sm: 8px;
  --sb-space-md: 14px;
  --sb-space-lg: 20px;
  --sb-space-xl: 32px;
  --sb-indicator-known: #4a7a3a;
}

.spellbook-body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body, system-ui, sans-serif);
}

/* ---- Topbar ---- */

.spellbook-topbar {
  display: grid;
  grid-template-columns: max-content 1fr max-content;
  align-items: center;
  gap: var(--sb-space-md);
  padding: 10px var(--sb-space-md);
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev);
  box-shadow: 0 1px 2px rgba(58, 42, 26, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  position: sticky;
  top: 0;
  z-index: 10;
}

.spellbook-topbar__back {
  text-decoration: none;
  white-space: nowrap;
}

.spellbook-topbar__brand {
  display: flex;
  align-items: center;
  gap: var(--sb-space-sm);
  min-width: 0;
}

.spellbook-topbar__feather {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  color: var(--ink);
  transform: rotate(-10deg);
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.08));
}

.spellbook-topbar__id {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.15;
}

.spellbook-topbar__name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.spellbook-topbar__sub {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.spellbook-topbar__sub strong {
  color: var(--burgundy);
  font-weight: 700;
}

.spellbook-topbar__title {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  justify-self: end;
}

/* placeholder под будущий slot-indicator — пока скрыт */
.spellbook-topbar__slots[hidden] { display: none; }

/* ---- Page layout ---- */

.spellbook-page {
  display: grid;
  grid-template-columns: minmax(240px, 320px) 1fr;
  gap: var(--sb-space-md);
  padding: var(--sb-space-md);
  max-width: 1400px;
  margin: 0 auto;
}

/* ---- Filters sidebar ---- */

.spellbook-filters {
  display: flex;
  flex-direction: column;
  gap: var(--sb-space-md);
  padding: var(--sb-space-md);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 2px rgba(58, 42, 26, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  align-self: start;
  position: sticky;
  top: 60px;
}

.spellbook-filters__group {
  display: flex;
  flex-direction: column;
  gap: var(--sb-space-xs);
}

.spellbook-filters__more {
  display: flex;
  flex-direction: column;
  gap: var(--sb-space-sm);
  margin: 0;
  padding: 0;
  border: 0;
}

.spellbook-filters__more > summary {
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  list-style: none;
  padding: 2px 0;
  user-select: none;
}

.spellbook-filters__more > summary::-webkit-details-marker { display: none; }

.spellbook-filters__more > summary::after {
  content: '▾';
  margin-left: var(--sb-space-xs);
  display: inline-block;
  transition: transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--ink-mute);
}

.spellbook-filters__more[open] > summary::after {
  transform: rotate(-180deg);
}

.spellbook-filters__group--meta {
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  border-top: 1px dashed var(--line);
  padding-top: var(--sb-space-sm);
}

.spellbook-filters__label {
  font-size: 11px;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.spellbook-filters__count {
  font-size: 12px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

#sb-reset[hidden] { display: none; }

#sb-search {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
  background: var(--bg);
  color: var(--ink);
}

#sb-search:focus {
  outline: 2px solid var(--burgundy);
  outline-offset: 1px;
  border-color: var(--burgundy);
}

/* ---- Chips (scoped под .spellbook-filters чтобы не конфликтовать с .chip из styles.css на листе) ---- */

.spellbook-filters .chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sb-space-xs);
}

.spellbook-filters .chip {
  font-size: 12px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
  user-select: none;
  transition: background 120ms ease-out, border-color 120ms ease-out;
}

.spellbook-filters .chip:hover {
  background: var(--bg-sunken);
}

.spellbook-filters .chip:focus-visible {
  outline: 2px solid var(--burgundy);
  outline-offset: 1px;
}

.spellbook-filters .chip[aria-pressed="true"],
.spellbook-filters .chip.is-active {
  /* Совпадает с .btn--primary из styles.css (default theme).
     Темы (dark, kenku-feathers и т.д.) переопределяют через свои overrides. */
  background: var(--burgundy);
  color: var(--on-accent);
  border-color: var(--burgundy-deep);
}

/* ---- List + groups ---- */

.spellbook-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 60vh;
}

.spellbook-loading,
.spellbook-empty,
.spellbook-error {
  padding: var(--sb-space-lg);
  text-align: center;
  color: var(--ink-soft);
}

.spellbook-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sb-space-sm);
}

.spellbook-error { color: var(--bad, #a83232); }

.sb-group {
  margin-top: var(--sb-space-xl);
}

.sb-group:first-child {
  margin-top: var(--sb-space-sm);
}

.sb-group__header {
  display: grid;
  grid-template-columns: max-content 1fr max-content;
  align-items: center;
  gap: var(--sb-space-md);
  padding: var(--sb-space-sm) 0 var(--sb-space-sm) 2px;
  position: sticky;
  top: 56px;
  background: var(--bg);
  z-index: 2;
}

.sb-group__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--ink);
  line-height: 1;
}

.sb-group__rule {
  height: 1px;
  background: linear-gradient(90deg, var(--line) 0%, var(--line-soft) 60%, transparent 100%);
}

.sb-group__count {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.sb-group__count strong {
  color: var(--sb-indicator-known);
  font-weight: 700;
}

.sb-group__rows {
  display: flex;
  flex-direction: column;
  margin-top: var(--sb-space-xs);
}

/* ---- Spell card (row + expandable panel) ---- */

.spell-card {
  display: grid;
  grid-template-rows: auto 0fr;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  border-radius: 0;
  padding: 0;
  transition: grid-template-rows 240ms cubic-bezier(0.16, 1, 0.3, 1),
              background 160ms ease-out;
}

.spell-card:first-child { border-top: 1px solid var(--line-soft); }

.spell-card:hover { background: var(--bg-elev); }

.spell-card.is-expanded {
  grid-template-rows: auto 1fr;
  background: var(--bg-elev);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 var(--line) inset;
}

.spell-card__head {
  display: grid;
  grid-template-columns: 1fr max-content;
  align-items: center;
  gap: var(--sb-space-md);
  padding: var(--sb-space-sm) var(--sb-space-md);
  min-height: 40px;
}

.spell-card__expand {
  display: grid;
  grid-template-columns: 22px 1fr max-content;
  align-items: center;
  gap: var(--sb-space-sm);
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: inherit;
  min-width: 0;
  width: 100%;
}

.spell-card__expand:focus-visible {
  outline: 2px solid var(--burgundy);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.spell-card__indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  font-size: 14px;
  font-weight: 700;
  color: transparent;
  line-height: 1;
}

.spell-card[data-known="true"] .spell-card__indicator {
  color: var(--sb-indicator-known);
}

.spell-card__title {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 2px;
}

.spell-card__name {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.spell-card__name-en {
  display: none;
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-mute);
  margin-left: 6px;
}

.spell-card.is-expanded .spell-card__name {
  font-size: 17px;
  font-weight: 700;
  white-space: normal;
}

.spell-card.is-expanded .spell-card__name-en {
  display: inline;
}

.spell-card__meta {
  font-size: 12px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 28ch;
}

.spell-card.is-expanded .spell-card__meta {
  display: none; /* в раскрытом виде meta переезжает в props-list */
}

.spell-card__chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 12px;
  color: var(--ink-mute);
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1);
}

.spell-card.is-expanded .spell-card__chevron {
  transform: rotate(-180deg);
  color: var(--ink-soft);
}

.spell-card__toggle {
  flex: 0 0 auto;
  white-space: nowrap;
  font-size: 12px;
  padding: 5px 12px;
  align-self: center;
  justify-self: end;
}

.spell-card__toggle--known {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--line);
}

.spell-card__toggle--known:hover {
  background: var(--bg-sunken);
  color: var(--ink);
}

/* expandable panel */
.spell-card__panel {
  overflow: hidden;
  display: grid;
  /* grid-row + min-height трюк: 0fr → 1fr раскрытие */
}

.spell-card__panel-inner {
  padding: 0 var(--sb-space-md) var(--sb-space-md) calc(22px + var(--sb-space-sm) + var(--sb-space-md));
  display: flex;
  flex-direction: column;
  gap: var(--sb-space-sm);
  max-width: 75ch;
}

.spell-card__props {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 2px var(--sb-space-md);
  margin: 0;
  font-size: 13px;
  line-height: 1.4;
}

.spell-card__props dt {
  color: var(--ink-soft);
  font-weight: 600;
}

.spell-card__props dd {
  margin: 0;
  color: var(--ink);
}

.spell-card__body {
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
  color: var(--ink);
}

.spell-card__higher {
  font-size: 13px;
  line-height: 1.5;
  padding-top: var(--sb-space-sm);
  border-top: 1px dashed var(--line-soft);
  color: var(--ink-soft);
}

.spell-card__higher strong {
  color: var(--ink);
}

/* ---- Skeleton (loading state) ---- */

.spellbook-skeleton {
  display: flex;
  flex-direction: column;
  gap: var(--sb-space-md);
  padding-top: var(--sb-space-md);
}

.spellbook-skeleton__header {
  height: 20px;
  width: 140px;
  background: var(--bg-sunken);
  border-radius: var(--radius);
}

.spellbook-skeleton__row {
  height: 36px;
  background: linear-gradient(90deg, var(--bg-elev) 0%, var(--bg-sunken) 50%, var(--bg-elev) 100%);
  background-size: 200% 100%;
  border-radius: var(--radius);
  animation: sb-shimmer 1.4s infinite linear;
}

@keyframes sb-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---- prefers-reduced-motion ---- */

@media (prefers-reduced-motion: reduce) {
  .spell-card,
  .spell-card__chevron,
  .spellbook-filters .chip,
  .spellbook-filters__more > summary::after {
    transition: none;
  }
  .spellbook-skeleton__row {
    animation: none;
  }
}

/* ---- Mobile <760px ---- */

@media (max-width: 760px) {
  .spellbook-page {
    grid-template-columns: 1fr;
  }
  .spellbook-filters {
    position: static;
  }
  .sb-group__header {
    position: static;
  }
  .spellbook-topbar {
    grid-template-columns: max-content 1fr;
  }
  .spellbook-topbar__title {
    display: none;
  }
  .spell-card__expand {
    grid-template-columns: 22px 1fr;
  }
  .spell-card__chevron {
    display: none;
  }
  .spell-card__meta {
    max-width: 18ch;
  }
}

/* ============ Popup overlay (модал-обёртка) ============ */
/* Попап = тот же /spellbook view (.spellbook-page + .sb-group + .spell-card),
   но в модальном окне с воздухом от краёв экрана. См. spellbook_popup.js. */

.sb-popup-backdrop {
  /* extends .modal-backdrop from styles.css */
  z-index: 250;
}

.modal--book.sb-popup {
  width: 92vw;
  height: 92vh;
  max-width: 1200px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  padding: 0;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 48px rgba(58, 42, 26, 0.32),
              inset 0 1px 0 rgba(255, 255, 255, 0.4);
  overflow: hidden;
}

.sb-popup__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sb-space-md);
  padding: var(--sb-space-md) var(--sb-space-lg);
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
}

.sb-popup__head .modal__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.sb-popup__head .modal__close {
  background: transparent;
  border: 0;
  font-size: 18px;
  line-height: 1;
  padding: 4px 8px;
  cursor: pointer;
  color: var(--ink-soft);
  border-radius: var(--radius);
}

.sb-popup__head .modal__close:hover {
  background: var(--bg-sunken);
  color: var(--ink);
}

.sb-popup__head .modal__close:focus-visible {
  outline: 2px solid var(--burgundy);
  outline-offset: 2px;
}

/* Внутри попапа .spellbook-page занимает всю оставшуюся высоту, со скроллом
   списка (не модала). Filter sidebar sticky сверху ВНУТРИ попапа. */
.modal--book.sb-popup .spellbook-page--popup {
  flex: 1 1 auto;
  min-height: 0;
  max-width: none;
  margin: 0;
  padding: var(--sb-space-md);
  overflow: hidden;
}

.modal--book.sb-popup .spellbook-filters {
  position: static;
  align-self: stretch;
  overflow-y: auto;
  max-height: 100%;
}

.modal--book.sb-popup .spellbook-list {
  overflow-y: auto;
  padding-right: var(--sb-space-xs);
  min-height: 0;
}

/* Тематический scrollbar внутри попапа — как на листе персонажа (.col). */
.modal--book.sb-popup .spellbook-filters,
.modal--book.sb-popup .spellbook-list {
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.modal--book.sb-popup .spellbook-filters::-webkit-scrollbar,
.modal--book.sb-popup .spellbook-list::-webkit-scrollbar {
  width: 8px;
}
.modal--book.sb-popup .spellbook-filters::-webkit-scrollbar-thumb,
.modal--book.sb-popup .spellbook-list::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 4px;
}
.modal--book.sb-popup .spellbook-filters::-webkit-scrollbar-track,
.modal--book.sb-popup .spellbook-list::-webkit-scrollbar-track {
  background: transparent;
}

/* Sticky group-headers внутри попапа держатся к верху скролл-контейнера */
.modal--book.sb-popup .sb-group__header {
  top: 0;
}

@media (max-width: 760px) {
  .modal--book.sb-popup {
    width: 96vw;
    height: 94vh;
    max-width: 96vw;
    max-height: 94vh;
    border-radius: var(--radius);
  }
  .modal--book.sb-popup .spellbook-page--popup {
    padding: var(--sb-space-sm);
  }
  .modal--book.sb-popup .spellbook-filters {
    max-height: 32vh;
  }
}