/* ------------------------------------------------------------------ *
 * Bending Sandbox — UI shell
 * The 3D view owns the whole viewport; everything here floats on top.
 * ------------------------------------------------------------------ */

:root {
  --ui-bg: rgba(10, 14, 20, 0.55);
  --ui-bg-solid: rgba(12, 16, 22, 0.92);
  --ui-border: rgba(255, 255, 255, 0.12);
  --ui-text: rgba(238, 245, 255, 0.92);
  --ui-text-dim: rgba(197, 214, 232, 0.6);
  --ui-accent: #7fd6ff;
  --ui-radius: 14px;
  --ui-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --ui-font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  /* Small caps used for every tag, key and section label in the HUD. */
  --ui-caps: 0.16em;
}

* {
  box-sizing: border-box;
}

/*
 * `hidden` is how the HUD and the spellbook fold things away, and a flex or
 * grid `display` in a class rule beats the attribute's default `display: none`
 * every time. One `!important` here is cheaper than remembering that at each
 * of the dozen places something is hidden.
 */
[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #05070a;
  color: var(--ui-text);
  font-family: var(--ui-font);
  -webkit-font-smoothing: antialiased;
}

#viewport {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: crosshair;
}

/* ------------------------------------------------------------------ *
 * Loading veil
 * ------------------------------------------------------------------ */

.loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: radial-gradient(120% 120% at 50% 30%, #16202c 0%, #05070a 70%);
  transition: opacity 0.7s ease, visibility 0.7s;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__inner {
  text-align: center;
  width: min(420px, 80vw);
}

.loader__title {
  margin: 22px 0 18px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.loader__sigil {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.sigil {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  animation: sigil-pulse 1.8s ease-in-out infinite;
}

.sigil--a {
  background: #1d5f8f;
}
.sigil--b {
  background: #3fb4ff;
  animation-delay: 0.15s;
}
.sigil--c {
  background: #9fe0ff;
  animation-delay: 0.3s;
}
.sigil--d {
  background: #ecfbff;
  animation-delay: 0.45s;
}

@keyframes sigil-pulse {
  0%,
  100% {
    transform: scale(0.7);
    opacity: 0.35;
  }
  50% {
    transform: scale(1.15);
    opacity: 1;
  }
}

.loader__bar {
  height: 3px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.loader__bar i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 3px;
  background: linear-gradient(90deg, #1d5f8f, #3fb4ff, #ecfbff);
  transition: width 0.25s ease;
}

.loader__status {
  margin: 14px 0 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ui-text-dim);
}

/* ------------------------------------------------------------------ *
 * HUD
 * ------------------------------------------------------------------ */

/*
 * The HUD sits *above* the spellbook (z 25) on purpose: the loadout bar has to
 * stay lit and droppable while the book is open, and a child cannot escape its
 * parent's stacking context, so the whole HUD goes over the top and the panels
 * that would fight the book are faded out instead (`.is-book-open`).
 */
.hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 30;
  font-size: 13px;
}

.hud.is-book-open .hud__title,
.hud.is-book-open .hud__stats,
.hud.is-book-open .hud__help {
  opacity: 0;
  pointer-events: none;
}

.hud__title,
.hud__stats {
  transition: opacity 0.25s ease;
}

/* ------------------------------------------------------------------ *
 * Ability bar
 * ------------------------------------------------------------------ */

/*
 * Full width and centred, rather than `left: 50%` + `translateX(-50%)`.
 *
 * The old trick shrink-wraps: an absolutely positioned box with `left: 50%`
 * gets exactly half the viewport to lay out in, which was invisible while the
 * bar could not wrap and became a bar that folded after six cards the moment
 * it could. Full-bleed with `justify-content: center` gives the row the whole
 * window, so eight slots and the transient card stay on one line.
 *
 * The container is therefore transparent to the pointer — it spans the screen
 * — and the cards opt back in. Events still bubble to the delegated listeners.
 */
.hud__abilities {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 26px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0 22px;
  pointer-events: none;
}

.hud__abilities > .ability-card {
  pointer-events: auto;
}

.ability-card {
  position: relative;
  width: 96px;
  padding: 12px 8px 10px;
  border-radius: var(--ui-radius);
  border: 1px solid var(--ui-border);
  background: var(--ui-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--ui-shadow);
  text-align: center;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease,
    box-shadow 0.18s ease;
  user-select: none;
}

.ability-card:hover {
  transform: translateY(-3px);
  background: rgba(20, 28, 38, 0.7);
}

.ability-card.is-active {
  border-color: var(--accent, var(--ui-accent));
  background: rgba(20, 28, 38, 0.82);
  box-shadow: 0 0 0 1px var(--accent, var(--ui-accent)) inset, 0 8px 28px rgba(0, 0, 0, 0.5),
    0 0 26px -6px var(--accent, var(--ui-accent));
}

/* Armed: the slot pulses until the shot is taken or cancelled. */
.hud__abilities.is-armed .ability-card.is-active {
  animation: ability-armed 1.05s ease-in-out infinite;
}

@keyframes ability-armed {
  0%,
  100% {
    box-shadow: 0 0 0 1px var(--accent, var(--ui-accent)) inset, 0 8px 28px rgba(0, 0, 0, 0.5),
      0 0 22px -8px var(--accent, var(--ui-accent));
  }
  50% {
    box-shadow: 0 0 0 2px var(--accent, var(--ui-accent)) inset, 0 8px 28px rgba(0, 0, 0, 0.5),
      0 0 34px -2px var(--accent, var(--ui-accent));
  }
}

/*
 * Cooldown sweep. A conic gradient driven by one custom property, so the frame
 * loop updates it with a single `setProperty` and never triggers layout.
 */
.ability-card__sweep {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: conic-gradient(
    from 0deg,
    rgba(5, 9, 14, 0.8) calc(var(--cooldown, 0) * 360deg),
    transparent 0
  );
  opacity: 0;
  transition: opacity 0.12s linear;
  pointer-events: none;
}

.ability-card.is-cooling .ability-card__sweep {
  opacity: 1;
}

.ability-card.is-cooling .ability-card__glyph,
.ability-card.is-cooling .ability-card__label {
  opacity: 0.45;
}

.ability-card__glyph {
  position: relative;
  color: var(--accent, var(--ui-accent));
}

.ability-card__glyph .glyph-svg {
  display: block;
  width: 34px;
  height: 34px;
  margin: 1px auto 0;
  filter: drop-shadow(0 0 6px var(--accent, var(--ui-accent)));
  transition: filter 0.18s ease, opacity 0.18s ease;
}

.ability-card.is-active .glyph-svg {
  filter: drop-shadow(0 0 11px var(--accent, var(--ui-accent)));
}

.ability-card__label {
  position: relative;
  margin-top: 7px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: opacity 0.18s ease;
}

.ability-card__key {
  position: absolute;
  top: 6px;
  right: 9px;
  z-index: 1;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ui-text-dim);
}

/*
 * The slot's name is a button: clicking it opens that ability in the editor
 * rather than arming it. It has to look like the label it replaced, so every
 * inherited button style is unwound.
 */
button.ability-card__label {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
}

button.ability-card__label:hover {
  color: var(--accent, var(--ui-accent));
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.35);
  text-underline-offset: 3px;
}

/* An empty slot: an invitation, drawn as an outline rather than a panel. */
.ability-card.is-empty {
  border-style: dashed;
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(10, 14, 20, 0.32);
  box-shadow: none;
  color: var(--ui-text-dim);
}

.ability-card.is-empty:hover {
  border-color: rgba(127, 214, 255, 0.5);
  background: rgba(16, 24, 34, 0.55);
  color: var(--ui-text);
}

.ability-card.is-empty .ability-card__label {
  opacity: 0.55;
  font-weight: 500;
}

.ability-card__plus {
  display: block;
  width: 34px;
  height: 34px;
  margin: 1px auto 0;
  font-size: 20px;
  font-weight: 300;
  line-height: 34px;
  opacity: 0.5;
}

/*
 * The transient slot. An ability chosen straight from the spellbook holds no
 * key, but it still needs somewhere to pulse and sweep, so it borrows a ninth
 * card marked out with a dotted key box.
 */
.ability-card--loose {
  border-color: rgba(255, 255, 255, 0.2);
  border-left-style: dotted;
}

.ability-card--loose .ability-card__key {
  opacity: 0.5;
}

/* Drag and drop: the source dims, the target lights up. */
.ability-card.is-dragging {
  opacity: 0.4;
}

.ability-card.is-drop {
  border-color: var(--ui-accent);
  background: rgba(24, 38, 52, 0.9);
  box-shadow: 0 0 0 1px var(--ui-accent) inset, 0 0 26px -6px var(--ui-accent);
  transform: translateY(-3px);
}

/* While the book is open, every slot advertises itself as a drop target. */
.hud.is-book-open .ability-card {
  border-color: rgba(127, 214, 255, 0.28);
}

.hud.is-book-open .ability-card.is-empty {
  animation: slot-invite 2.4s ease-in-out infinite;
}

@keyframes slot-invite {
  0%,
  100% {
    border-color: rgba(127, 214, 255, 0.28);
  }
  50% {
    border-color: rgba(127, 214, 255, 0.62);
  }
}

.hud__panel {
  position: absolute;
  padding: 12px 14px;
  border-radius: var(--ui-radius);
  border: 1px solid var(--ui-border);
  background: var(--ui-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--ui-shadow);
  line-height: 1.65;
}

/*
 * The controls panel moved from bottom-left to under the title.
 *
 * It sat above the ability bar for six slots and 636 pixels of bar. Eight
 * slots plus the transient card is 944, and a centred bar that wide runs
 * straight through the bottom-left corner — the panel and the first two slots
 * were drawing on top of each other. Stacking it under the title keeps the
 * left column as one block, leaves the whole bottom edge to the bar, and costs
 * nothing: the corner it vacated is the emptiest part of the stage.
 */
.hud__help {
  left: 22px;
  top: 126px;
  /* Wider than it was: the key list is generated two-up now and eight ability
   * names elided at 260px read as eight identical stubs. */
  width: 296px;
  color: var(--ui-text-dim);
  transition: opacity 0.3s ease;
}

.hud__help.is-hidden {
  opacity: 0;
}

.hud__help strong {
  color: var(--ui-text);
  font-weight: 600;
}

.hud__help kbd {
  display: inline-block;
  min-width: 18px;
  padding: 1px 5px;
  margin-right: 4px;
  border-radius: 5px;
  border: 1px solid var(--ui-border);
  background: rgba(255, 255, 255, 0.07);
  font: 11px/1.5 var(--ui-font);
  color: var(--ui-text);
  text-align: center;
}

.hud__stats {
  right: 22px;
  top: 22px;
  min-width: 132px;
  font-variant-numeric: tabular-nums;
  color: var(--ui-text-dim);
}

.hud__stats b {
  float: right;
  color: var(--ui-text);
  font-weight: 600;
}

.hud__title {
  left: 22px;
  top: 22px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 11px;
  font-weight: 600;
}

.hud__title span {
  display: block;
  margin-top: 2px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ui-text-dim);
  text-transform: none;
}

/* "6 of 100 spells · Tab spellbook" — the roster's size, and the way in. */
.hud__roster {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--ui-border);
  color: var(--ui-text-dim);
}

.hud__roster b {
  color: var(--ui-accent);
  font-weight: 600;
}

.hud__roster kbd {
  margin-left: 6px;
}

/*
 * The generated key list. Two columns of `letter digit — name`, which is the
 * densest shape that still reads: eight rows of prose ran the help panel off
 * the bottom of a laptop screen.
 */
.hud__keys {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 10px;
  margin-bottom: 4px;
}

.hud__key {
  display: flex;
  align-items: baseline;
  gap: 3px;
  min-width: 0;
  font-size: 11px;
}

.hud__key i {
  overflow: hidden;
  color: var(--ui-text);
  font-style: normal;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hud__toast {
  position: absolute;
  left: 50%;
  top: 76px;
  transform: translate(-50%, -12px);
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  background: var(--ui-bg-solid);
  box-shadow: var(--ui-shadow);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.hud__toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Standing reminder that the clock is stopped but the editor is not. */
.hud__paused {
  position: absolute;
  left: 50%;
  top: 26px;
  transform: translate(-50%, -8px);
  padding: 5px 16px;
  border-radius: 999px;
  border: 1px solid rgba(127, 214, 255, 0.4);
  background: rgba(12, 22, 32, 0.86);
  color: var(--ui-accent);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.hud__paused.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.hud__help-note {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--ui-border);
  font-size: 11px;
  color: var(--ui-accent);
  opacity: 0.72;
}

/* ------------------------------------------------------------------ *
 * Spellbook
 *
 * The full-screen roster browser. It sits at z 25, under the HUD (z 30), so
 * the loadout bar stays lit above it and a card can be dragged onto a slot —
 * which is why the panel stops 148px short of the bottom instead of filling
 * the viewport.
 * ------------------------------------------------------------------ */

.spellbook {
  position: fixed;
  inset: 0;
  z-index: 25;
  visibility: hidden;
  pointer-events: none;
  font-size: 13px;
}

.spellbook.is-open {
  visibility: visible;
  pointer-events: auto;
}

.book__scrim {
  position: absolute;
  inset: 0;
  background: radial-gradient(130% 120% at 50% 18%, rgba(14, 22, 32, 0.68), rgba(3, 5, 8, 0.9));
  backdrop-filter: blur(6px) saturate(0.8);
  -webkit-backdrop-filter: blur(6px) saturate(0.8);
  opacity: 0;
  transition: opacity 0.28s ease;
}

.spellbook.is-open .book__scrim {
  opacity: 1;
}

/* The book itself: one panel in the HUD's language, at a larger scale. */
.book {
  position: absolute;
  top: max(20px, 3vh);
  bottom: 148px;
  left: 50%;
  width: min(1420px, calc(100vw - 44px));
  transform: translate(-50%, 14px) scale(0.99);
  display: flex;
  flex-direction: column;
  border-radius: 18px;
  border: 1px solid var(--ui-border);
  background: linear-gradient(180deg, rgba(13, 18, 26, 0.94), rgba(8, 11, 16, 0.94));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  opacity: 0;
  overflow: hidden;
  transition: opacity 0.24s ease, transform 0.24s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.spellbook.is-open .book {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

/* While a card is being dragged the book gets out of the way of the bar. */
.spellbook.is-dragging .book {
  opacity: 0.55;
}

/* ---- header ---- */

.book__head {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 15px 20px 13px;
  border-bottom: 1px solid var(--ui-border);
}

.book__brand {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.book__count {
  margin-left: 10px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  background: rgba(255, 255, 255, 0.04);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--ui-text-dim);
}

.book__count b {
  color: var(--ui-accent);
}

.book__search {
  position: relative;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  max-width: 520px;
  height: 34px;
  padding: 0 12px 0 34px;
  border-radius: 10px;
  border: 1px solid var(--ui-border);
  background: rgba(255, 255, 255, 0.05);
  transition: border-color 0.18s ease, background 0.18s ease;
}

.book__search:focus-within {
  border-color: rgba(127, 214, 255, 0.55);
  background: rgba(255, 255, 255, 0.09);
}

.book__search-icon {
  position: absolute;
  left: 11px;
  width: 15px;
  height: 15px;
  fill: none;
  stroke: var(--ui-text-dim);
  stroke-width: 1.6;
  stroke-linecap: round;
}

.book__search input {
  width: 100%;
  border: 0;
  background: none;
  color: var(--ui-text);
  font-family: var(--ui-font);
  font-size: 13px;
  outline: none;
}

.book__search input::placeholder {
  color: rgba(197, 214, 232, 0.42);
}

/* Bind mode: the book was opened *from* a slot, so a plain click binds. */
.book__mode {
  flex: 0 0 auto;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(127, 214, 255, 0.45);
  background: rgba(127, 214, 255, 0.12);
  color: var(--ui-accent);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: var(--ui-caps);
  text-transform: uppercase;
}

/* ---- school rail ---- */

/*
 * Fifteen chips do not fit across the header, so the rail wraps to two rows.
 * It used to scroll horizontally with the scrollbar hidden, which at nine
 * schools never scrolled and at fifteen put the last school off the right-hand
 * edge with nothing on screen to say it was there. Wrapping costs ~26px of
 * body height and keeps the whole roster's shape visible at once, which is
 * half of what the rail is for.
 */
.book__rail {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--ui-border);
}

.book-chip {
  display: flex;
  align-items: center;
  gap: 7px;
  flex: 0 0 auto;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--ui-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ui-text-dim);
  font-family: var(--ui-font);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: var(--ui-caps);
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease, opacity 0.16s ease;
}

.book-chip i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px -1px var(--accent);
}

.book-chip b {
  color: rgba(255, 255, 255, 0.35);
  font-weight: 600;
}

.book-chip:hover {
  color: var(--ui-text);
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.07);
}

/* The section currently under the top of the body. Deliberately the hover
 * treatment plus a wash of the school's own colour rather than a new idea:
 * the rail is a position indicator now as well as a menu, and a second visual
 * language in a 22px chip would just be noise. */
.book-chip.is-current {
  color: var(--ui-text);
  border-color: color-mix(in srgb, var(--accent) 70%, transparent);
  background: color-mix(in srgb, var(--accent) 14%, rgba(255, 255, 255, 0.03));
}

.book-chip.is-current b {
  color: rgba(255, 255, 255, 0.55);
}

/* A school the filter has emptied stays in place, greyed — the rail is also
 * the roster's shape, and a rail that reflows on every keystroke is a rail
 * nobody can aim at. */
.book-chip.is-dim {
  opacity: 0.28;
}

/* ---- body ---- */

.book__body {
  flex: 1 1 auto;
  padding: 0 20px 22px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.18) transparent;
}

.book__body::-webkit-scrollbar {
  width: 10px;
}

.book__body::-webkit-scrollbar-thumb {
  border: 3px solid transparent;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16) padding-box;
}

.book-school {
  padding-bottom: 6px;
}

/*
 * Pinned school headers. The pad-and-negative-margin dance is what lets the
 * sticky bar cover the full gutter width while the section itself keeps the
 * body's padding — without it the cards slide out from under the header at
 * the edges, which looks like a rendering bug.
 */
.book-school__head {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 -20px;
  padding: 14px 20px 9px;
  background: linear-gradient(180deg, rgba(10, 14, 20, 0.98) 62%, rgba(10, 14, 20, 0));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ui-text);
}

.book-school__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px -1px var(--accent);
}

.book-school__head b {
  color: rgba(255, 255, 255, 0.3);
  font-size: 10px;
  font-weight: 600;
}

.book-school__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 8px;
}

/* ---- a card ---- */

.spell {
  position: relative;
  display: grid;
  grid-template-columns: 38px 1fr auto;
  align-items: start;
  gap: 11px;
  padding: 11px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.022);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.spell:hover,
.spell.is-cursor {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
}

/* The keyboard cursor has to be legible without a pointer anywhere near it. */
.spell.is-cursor {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 45%, transparent) inset;
}

/* The ability the app currently has in the slot. */
.spell.is-selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, rgba(255, 255, 255, 0.03));
  box-shadow: 0 0 22px -10px var(--accent);
}

.spell__glyph {
  display: block;
  color: var(--accent);
}

.spell__glyph .glyph-svg {
  display: block;
  width: 34px;
  height: 34px;
  filter: drop-shadow(0 0 7px color-mix(in srgb, var(--accent) 70%, transparent));
}

.spell__text {
  display: block;
  min-width: 0;
}

.spell__name {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ui-text);
}

.spell__blurb {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--ui-text-dim);
}

/* ARROW / CIRCLE — how the thing is aimed, in four characters. */
.spell__shape {
  align-self: start;
  padding: 3px 7px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(197, 214, 232, 0.5);
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

/* The key it answers to, if it is on the bar. */
.spell__key {
  position: absolute;
  right: 10px;
  bottom: 9px;
  min-width: 17px;
  padding: 1px 4px;
  border-radius: 5px;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, transparent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-align: center;
}

.book__empty {
  padding: 40px 0;
  text-align: center;
  color: var(--ui-text-dim);
}

/* ---- footer ---- */

.book__foot {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 20px;
  border-top: 1px solid var(--ui-border);
  color: var(--ui-text-dim);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.book__foot kbd {
  display: inline-block;
  min-width: 17px;
  padding: 1px 5px;
  margin-right: 3px;
  border-radius: 5px;
  border: 1px solid var(--ui-border);
  background: rgba(255, 255, 255, 0.07);
  font: 10px/1.5 var(--ui-font);
  color: var(--ui-text);
  text-align: center;
}

.book__reset {
  margin-left: auto;
  padding: 5px 12px;
  border-radius: 8px;
  border: 1px solid var(--ui-border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--ui-text-dim);
  font-family: var(--ui-font);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

.book__reset:hover {
  border-color: rgba(255, 122, 106, 0.5);
  color: #ff9c8f;
}

/* ------------------------------------------------------------------ *
 * lil-gui theming
 * ------------------------------------------------------------------ */

/*
 * The panel itself.
 *
 * Selected as `body > .lil-gui`, not `.lil-gui.root`. lil-gui prefixed its
 * class names at 0.20 — the root element is `.lil-gui.lil-root` now — so this
 * whole block, and the title rule under it, silently stopped matching and had
 * been dead ever since. Nobody noticed the theming, because lil-gui's own
 * default happens to be a dark panel too. What was noticed, eventually, is
 * `max-height`: with the authored one dead the panel fell back to the library's
 * `100%`, which against `top: 16px` puts the last sixteen pixels of a
 * fifteen-school panel below the fold — and at fifteen schools with a hundred
 * abilities the panel is always at its limit. The child combinator picks out
 * the one GUI autoplaced on the page and is immune to the next rename; it is
 * the same idiom the spellbook-fade rule below already uses, and for the same
 * reason.
 */
body > .lil-gui {
  --background-color: rgba(12, 16, 22, 0.9);
  --widget-color: rgba(255, 255, 255, 0.1);
  --focus-color: rgba(127, 214, 255, 0.35);
  --hover-color: rgba(255, 255, 255, 0.16);
  --font-family: var(--ui-font);
  --font-size: 11px;
  --input-font-size: 11px;
  --title-height: 30px;
  --widget-height: 22px;
  --name-width: 46%;
  z-index: 40;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--ui-shadow);
}

/*
 * The height cap needs two classes to land.
 *
 * lil-gui ships `.lil-gui.lil-auto-place { max-height: 100% }`, which is
 * specificity (0,2,0) and beats `body > .lil-gui` at (0,1,1). `100%` of the
 * *containing block* is the viewport, so with `top: 16px` the panel's last
 * sixteen pixels sit below the fold — invisible until the panel is tall enough
 * to hit the cap, which at fifteen schools it always is. Both spellings, for
 * the same reason as the title rule.
 */
body > .lil-gui.lil-auto-place,
body > .lil-gui.autoPlace {
  max-height: calc(100vh - 32px);
}

/* Both spellings: 0.21 emits `lil-title`, older builds emitted `title`. */
body > .lil-gui > .lil-title,
body > .lil-gui > .title {
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
}

.lil-gui.autoPlace {
  top: 16px;
  right: 16px;
}

/* Out of the way while the spellbook is being read. */
body > .lil-gui {
  transition: opacity 0.24s ease;
}

body.is-book-open > .lil-gui {
  opacity: 0;
  pointer-events: none;
}

/* ------------------------------------------------------------------ *
 * The editor's header strip — search + jump
 *
 * Not a lil-gui controller: a strip of our own, wedged between the title bar
 * and the scrolling children so it is the one row in a panel of a thousand
 * controls that never scrolls away. Styled against the HUD's own variables
 * rather than lil-gui's, so it matches the rest of the shell whichever
 * version of the library is underneath.
 *
 * The widget rules are qualified with `.lil-gui` for specificity, not for
 * scope: our strip lives inside the panel, and lil-gui ships
 * `.lil-gui input, .lil-gui button { width: 100% }` — one class and one type,
 * which beats a bare class every time. Unqualified, the search field collapses
 * to nothing and the jump button eats the row.
 * ------------------------------------------------------------------ */

.editor-tools {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: 6px 8px;
  background: rgba(0, 0, 0, 0.28);
  border-bottom: 1px solid var(--ui-border);
}

/* Collapsing the panel by its title takes the strip with it. */
.lil-gui.lil-closed > .editor-tools,
.lil-gui.closed > .editor-tools {
  display: none;
}

.lil-gui .editor-tools__search {
  flex: 1 1 auto;
  /* lil-gui's `input { width: 100% }` would size the field to the whole strip
     and push the jump button out of the panel. */
  width: auto;
  min-width: 0;
  height: 22px;
  padding: 0 8px;
  border: 1px solid var(--ui-border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--ui-text);
  font-family: var(--ui-font);
  font-size: 11px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.lil-gui .editor-tools__search::placeholder {
  color: var(--ui-text-dim);
}

.lil-gui .editor-tools__search:focus {
  border-color: rgba(127, 214, 255, 0.55);
  background: rgba(255, 255, 255, 0.12);
}

/* The native macOS clear affordance sits badly on a 22px dark field. */
.lil-gui .editor-tools__search::-webkit-search-cancel-button {
  appearance: none;
  -webkit-appearance: none;
}

.lil-gui .editor-tools__jump {
  flex: 0 0 auto;
  width: 24px;
  height: 22px;
  padding: 0;
  border: 1px solid var(--ui-border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--ui-accent);
  font-family: var(--ui-font);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
}

.lil-gui .editor-tools__jump:hover {
  background: rgba(255, 255, 255, 0.16);
}

.lil-gui .editor-tools__jump:active {
  background: rgba(127, 214, 255, 0.25);
}

/* ------------------------------------------------------------------ *
 * Narrow windows
 *
 * The bar is nine cards wide now, not six, so it is shrunk in two steps
 * before it is allowed to wrap — a wrapped bar is two rows tall and the
 * spellbook has to be told to stop above it, which is the `bottom` bump in
 * the last block.
 * ------------------------------------------------------------------ */

@media (max-width: 1180px) {
  .ability-card {
    width: 84px;
  }
}

@media (max-width: 940px) {
  .ability-card {
    width: 72px;
    padding: 10px 6px 8px;
  }
  .ability-card__label {
    font-size: 10px;
    letter-spacing: 0.06em;
  }
  .book {
    bottom: 130px;
  }
}

@media (max-width: 760px) {
  .hud__help,
  .hud__stats {
    display: none;
  }
  .ability-card {
    width: 78px;
  }
  .book {
    top: 12px;
    bottom: 250px;
    width: calc(100vw - 20px);
  }
  .book__head {
    flex-wrap: wrap;
    gap: 10px;
  }
  .book-school__grid {
    grid-template-columns: 1fr;
  }
  /* Keep only "Esc close" and the reset button; the rest is mouse advice. */
  .book__foot span:not(:last-of-type) {
    display: none;
  }
}