/* ==========================================================================
   PuzzleStudio — base.css
   Theme tokens, app shell, HUD, panels, stage, transitions, toasts.
   Palette classes (pal-amber, pal-moss, ...) live in skins.css and only ever
   override the --acc-* tokens declared here.
   ========================================================================== */

/* --------------------------------------------------------------- tokens -- */
:root {
  /* surfaces */
  --bg:            #07090c;
  --bg-2:          #0b0e13;
  --panel:         #11151d;
  --panel-2:       #161b25;
  --panel-3:       #1d2430;
  --line:          #262e3c;
  --line-soft:     #1b222d;

  /* type */
  --text:          #e9edf5;
  --text-2:        #aab4c5;
  --dim:           #74809a;
  --dimmer:        #4b5567;

  /* accents (overridden per palette) */
  --acc:           #e2a84e;
  --acc-2:         #f6d08a;
  --acc-ink:       #1a1206;
  --acc-glow:      rgba(226, 168, 78, .35);
  --acc-wash:      rgba(226, 168, 78, .10);

  /* semantic */
  --good:          #5fcf8d;
  --warn:          #e6b455;
  --bad:           #e2695f;
  --info:          #6fb3e0;

  /* stat colors — stable regardless of palette so the HUD stays readable */
  --st-health:     #e2695f;
  --st-energy:     #e9c45c;
  --st-light:      #7ec7f2;
  --st-morale:     #b48ce0;

  /* geometry */
  --r-sm:          6px;
  --r:             10px;
  --r-lg:          16px;
  --gap:           14px;
  --side-w:        304px;

  --font-ui:       "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --font-mono:     ui-monospace, "Cascadia Mono", "Segoe UI Mono", "SF Mono", Consolas, "Liberation Mono", monospace;

  --sh-1:          0 1px 0 rgba(255,255,255,.05) inset, 0 10px 30px rgba(0,0,0,.55);
  --sh-2:          0 1px 0 rgba(255,255,255,.06) inset, 0 22px 58px rgba(0,0,0,.66);
  --sh-in:         0 0 60px rgba(0,0,0,.55) inset;
  --ease:          cubic-bezier(.22,.61,.36,1);
  --ease-out:      cubic-bezier(.16,1,.3,1);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

body::before {
  /* soft palette wash behind everything; retints as the biome changes */
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1100px 620px at 78% -12%, var(--acc-wash), transparent 62%),
    radial-gradient(900px 520px at 6% 108%, rgba(110,140,190,.09), transparent 60%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  transition: background 900ms var(--ease);
}

::selection { background: var(--acc); color: var(--acc-ink); }

button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }

/* thin, unobtrusive scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-thumb { background: var(--line); border-radius: 99px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--panel-3); background-clip: content-box; }
*::-webkit-scrollbar-track { background: transparent; }

/* ------------------------------------------------------------- app shell -- */
.ps-root {
  position: relative;
  z-index: 1;
  min-height: 100%;
  display: grid;
  grid-template-columns: var(--side-w) minmax(0, 1fr);
  gap: var(--gap);
  padding: var(--gap);
  max-width: 1500px;
  margin: 0 auto;
}

.ps-panel {
  position: relative;
  background:
    radial-gradient(140% 100% at 50% -20%, color-mix(in srgb, var(--acc) 5%, transparent), transparent 60%),
    linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-1);
  transition: box-shadow 700ms var(--ease), background 900ms var(--ease);
}
.ps-panel::after {
  /* one-pixel lit edge — reads as depth without costing a layer */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  border-radius: inherit;
  border-top: 1px solid rgba(255,255,255,.055);
  border-bottom: 1px solid rgba(0,0,0,.35);
}

/* ================================================================= SIDE == */
.ps-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  align-self: start;
  position: sticky;
  top: var(--gap);
  max-height: calc(100vh - var(--gap) * 2);
  overflow: auto;
}

.ps-brand { display: flex; align-items: center; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--line-soft); }
.ps-brand__mark {
  width: 38px; height: 38px; flex: none;
  display: grid; place-items: center;
  font-size: 20px; line-height: 1;
  border-radius: 11px;
  background: radial-gradient(circle at 30% 25%, var(--acc-2), var(--acc));
  color: var(--acc-ink);
  box-shadow: 0 0 22px var(--acc-glow);
  transition: background 700ms var(--ease), box-shadow 700ms var(--ease);
}
.ps-brand__name { font-size: 14px; font-weight: 700; letter-spacing: .34em; text-transform: uppercase; }
.ps-brand__sub { font-size: 11px; color: var(--dim); letter-spacing: .12em; text-transform: uppercase; margin-top: 2px; }

.ps-block { display: flex; flex-direction: column; gap: 9px; }
.ps-block__head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--dim);
}

/* ---------------------------------------------------------------- stats -- */
.ps-stat { position: relative; display: grid; grid-template-columns: 18px 1fr auto; align-items: center; gap: 8px; }
.ps-stat__icon { font-size: 14px; line-height: 1; text-align: center; }
.ps-stat__num  { font-family: var(--font-mono); font-size: 11px; color: var(--text-2); min-width: 26px; text-align: right; font-variant-numeric: tabular-nums; }

.ps-bar {
  position: relative;
  height: 10px;
  border-radius: 99px;
  background: #080b10;
  border: 1px solid var(--line-soft);
  box-shadow: 0 1px 2px rgba(0,0,0,.6) inset;
  overflow: hidden;
}
.ps-bar__fill {
  position: absolute; inset: 0 auto 0 0;
  width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--c) 42%, #000), var(--c) 82%, color-mix(in srgb, var(--c) 60%, #fff));
  box-shadow: 0 0 12px color-mix(in srgb, var(--c) 55%, transparent);
  transition: width 620ms var(--ease-out), filter 220ms linear;
}
.ps-bar__fill::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.32), rgba(255,255,255,0) 52%, rgba(0,0,0,.22));
}
.ps-bar__fill::before {
  /* slow travelling sheen — the bars breathe instead of sitting there */
  content: ""; position: absolute; inset: 0; border-radius: 99px;
  background: linear-gradient(100deg, transparent 35%, rgba(255,255,255,.22) 50%, transparent 65%);
  transform: translateX(-100%);
  animation: pzBarSheen 4.6s var(--ease) infinite;
}
@keyframes pzBarSheen { 0%,62% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

.ps-stat[data-k="health"] .ps-bar__fill { --c: var(--st-health); }
.ps-stat[data-k="energy"] .ps-bar__fill { --c: var(--st-energy); }
.ps-stat[data-k="light"]  .ps-bar__fill { --c: var(--st-light);  }
.ps-stat[data-k="morale"] .ps-bar__fill { --c: var(--st-morale); }

/* reactive states — ui.js sets data-level as the value moves */
.ps-stat[data-level="low"]  .ps-bar { border-color: color-mix(in srgb, var(--warn) 45%, var(--line-soft)); }
.ps-stat[data-level="crit"] .ps-bar { border-color: color-mix(in srgb, var(--bad) 60%, var(--line-soft)); }
.ps-stat[data-level="crit"] .ps-bar__fill { animation: pzBarCrit 1.15s ease-in-out infinite; }
.ps-stat[data-level="crit"] .ps-stat__num { color: var(--bad); }
.ps-stat[data-level="crit"] .ps-stat__icon { animation: pzBarCrit 1.15s ease-in-out infinite; }
.ps-stat[data-level="full"] .ps-bar__fill { filter: saturate(1.15); }
@keyframes pzBarCrit { 50% { filter: brightness(1.65) saturate(1.3); } }

.ps-stat.is-up   { animation: pzFlashUp   900ms var(--ease); }
.ps-stat.is-down { animation: pzFlashDown 900ms var(--ease); }
@keyframes pzFlashUp   { 0%,100% { filter: none; } 18% { filter: brightness(1.9) saturate(1.3); } }
@keyframes pzFlashDown { 0%,100% { transform: none; filter: none; } 15% { transform: translateX(-3px); filter: brightness(1.6); } 40% { transform: translateX(2px); } }

.ps-delta {
  /* floats out of the row instead of reflowing it — a drain can fire four
     times a second in an arena scene and must never move the layout */
  position: absolute; right: 30px; top: 50%; z-index: 3;
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  padding: 1px 5px; border-radius: 99px; white-space: nowrap;
  pointer-events: none;
  animation: pzDeltaFloat 1.5s var(--ease-out) forwards;
}
.ps-delta.up   { color: var(--good); background: rgba(95,207,141,.16); box-shadow: 0 0 12px rgba(95,207,141,.25); }
.ps-delta.down { color: var(--bad);  background: rgba(226,105,95,.16); box-shadow: 0 0 12px rgba(226,105,95,.25); }
@keyframes pzDeltaFloat {
  0%   { opacity: 0; transform: translateY(-30%) scale(.8); }
  18%  { opacity: 1; transform: translateY(-50%) scale(1); }
  70%  { opacity: 1; transform: translateY(-90%); }
  100% { opacity: 0; transform: translateY(-150%); }
}

/* ------------------------------------------------------------ inventory -- */
.ps-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.ps-chip {
  position: relative;
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 9px 4px 7px;
  font-size: 11px; color: var(--text-2);
  background: var(--panel-3);
  border: 1px solid var(--line);
  border-radius: 99px;
  cursor: default;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease);
}
.ps-chip:hover { transform: translateY(-2px); border-color: var(--acc); color: var(--text); }
.ps-chip__i { font-size: 13px; }
.ps-chip.is-new { animation: pzPop 520ms var(--ease); }
@keyframes pzPop { 0% { transform: scale(.55); opacity: 0; } 60% { transform: scale(1.12); } 100% { transform: none; opacity: 1; } }
.ps-empty { font-size: 11px; color: var(--dimmer); font-style: italic; }

/* tooltip (pure CSS, no lib) */
.ps-tip { position: relative; }
.ps-tip::after {
  content: attr(data-tip);
  position: absolute; left: 50%; bottom: calc(100% + 8px);
  transform: translate(-50%, 4px);
  min-width: 120px; max-width: 220px;
  padding: 7px 9px;
  font-size: 11px; line-height: 1.35; color: var(--text); text-align: center;
  background: #0a0d13; border: 1px solid var(--line); border-radius: var(--r-sm);
  box-shadow: var(--sh-2);
  opacity: 0; pointer-events: none;
  transition: opacity 150ms var(--ease), transform 150ms var(--ease);
  z-index: 40;
}
.ps-tip:hover::after { opacity: 1; transform: translate(-50%, 0); }

/* ---------------------------------------------------------------- meta ---- */
.ps-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.ps-meta__cell {
  background: #0c1016; border: 1px solid var(--line-soft); border-radius: var(--r-sm);
  padding: 7px 9px;
}
.ps-meta__k { font-size: 9px; letter-spacing: .16em; text-transform: uppercase; color: var(--dimmer); }
.ps-meta__v { font-family: var(--font-mono); font-size: 13px; color: var(--text); margin-top: 2px; font-variant-numeric: tabular-nums; }
.ps-meta__cell--wide { grid-column: 1 / -1; }
.ps-meta__v--seed { font-size: 11px; color: var(--acc-2); word-break: break-all; }

/* --------------------------------------------------------------- badges -- */
.ps-badges { display: flex; flex-wrap: wrap; gap: 6px; }
.ps-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px;
  font-size: 11px; font-weight: 600;
  border-radius: 99px;
  color: var(--acc-2);
  background: var(--acc-wash);
  border: 1px solid color-mix(in srgb, var(--acc) 40%, transparent);
}
.ps-badge__pct { font-family: var(--font-mono); font-size: 10px; color: var(--dim); font-weight: 400; }

.ps-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.ps-tag {
  font-family: var(--font-mono); font-size: 10px;
  padding: 2px 7px; border-radius: 4px;
  color: var(--dim); background: #0c1016; border: 1px solid var(--line-soft);
}

/* ---------------------------------------------------------------- log ---- */
.ps-log { display: flex; flex-direction: column; gap: 4px; }
.ps-log__row {
  display: grid; grid-template-columns: 16px 1fr auto; align-items: center; gap: 7px;
  padding: 5px 7px; border-radius: var(--r-sm);
  font-size: 11px; color: var(--text-2);
  background: #0c1016; border: 1px solid transparent;
  animation: pzSlideIn 380ms var(--ease);
}
.ps-log__row:hover { border-color: var(--line); }
.ps-log__row.ok   { border-left: 2px solid var(--good); }
.ps-log__row.part { border-left: 2px solid var(--warn); }
.ps-log__row.bad  { border-left: 2px solid var(--bad); }
.ps-log__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ps-log__d { font-family: var(--font-mono); font-size: 10px; color: var(--dimmer); }
@keyframes pzSlideIn { from { opacity: 0; transform: translateX(-8px); } to { opacity: 1; transform: none; } }

/* ================================================================= MAIN == */
.ps-main { display: flex; flex-direction: column; gap: var(--gap); min-width: 0; }

.ps-top {
  display: flex; align-items: center; gap: 15px;
  padding: 14px 20px;
}
.ps-top__icon {
  position: relative;
  width: 48px; height: 48px; flex: none;
  display: grid; place-items: center; font-size: 25px;
  border-radius: 14px;
  background: radial-gradient(circle at 32% 24%, #141a24, #0a0d13);
  border: 1px solid var(--line);
  box-shadow: 0 0 30px var(--acc-glow) inset, 0 6px 16px rgba(0,0,0,.45);
  transition: box-shadow 700ms var(--ease);
}
.ps-top__icon::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(160deg, rgba(255,255,255,.10), transparent 45%);
}
.ps-top__txt { min-width: 0; flex: 1; }
.ps-top__title { font-size: 18px; font-weight: 700; letter-spacing: -.005em; line-height: 1.25; }
.ps-top__sub {
  font-size: 10.5px; color: var(--dim); margin-top: 4px;
  letter-spacing: .13em; text-transform: uppercase;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ps-top__acts { display: flex; gap: 8px; flex: none; }

/* --------------------------------------------------------------- stage --- */
.ps-stage {
  position: relative;
  flex: 1;
  min-height: 520px;
  padding: 24px;
  overflow: hidden;
}
.ps-stage::before {
  /* a very faint floor grade under every scene, so nothing floats on flat black */
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(90% 60% at 50% -10%, color-mix(in srgb, var(--acc) 7%, transparent), transparent 70%),
    linear-gradient(180deg, transparent 55%, rgba(0,0,0,.32));
}
.ps-stage__inner { position: relative; z-index: 1; }
.ps-stage.is-out .ps-stage__inner { animation: pzOut 300ms var(--ease) forwards; }
.ps-stage.is-in  .ps-stage__inner { animation: pzIn  520ms var(--ease-out); }
@keyframes pzOut { to { opacity: 0; transform: translateY(-16px) scale(.982); filter: blur(4px) brightness(.7); } }
@keyframes pzIn  { from { opacity: 0; transform: translateY(22px) scale(.988); filter: blur(5px) brightness(1.25); } }

/* scene contents arrive in sequence rather than all at once */
.ps-stage.is-in .pz-scene > * { animation: pzRiseIn 560ms var(--ease-out) backwards; }
.ps-stage.is-in .pz-scene > *:nth-child(1) { animation-delay: 40ms; }
.ps-stage.is-in .pz-scene > *:nth-child(2) { animation-delay: 120ms; }
.ps-stage.is-in .pz-scene > *:nth-child(3) { animation-delay: 200ms; }
.ps-stage.is-in .pz-scene > *:nth-child(n+4) { animation-delay: 260ms; }
@keyframes pzRiseIn { from { opacity: 0; transform: translateY(14px); } }

.ps-stage__sweep {
  position: absolute; inset: 0; z-index: 2; pointer-events: none; opacity: 0;
  background: linear-gradient(100deg, transparent 20%, var(--acc-wash) 45%, color-mix(in srgb, var(--acc) 22%, transparent) 50%, var(--acc-wash) 55%, transparent 80%);
}
.ps-stage.is-out .ps-stage__sweep { animation: pzSweep 760ms var(--ease); }
@keyframes pzSweep { 0% { opacity: 0; transform: translateX(-100%); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateX(100%); } }

/* ---------------------------------------------------------- scene bits --- */
.pz-scene { display: flex; flex-direction: column; gap: 20px; }
.pz-intro {
  position: relative;
  font-size: 14.5px; line-height: 1.7; color: var(--text-2);
  padding: 4px 0 4px 16px;
  max-width: 72ch;
  text-wrap: pretty;
}
.pz-intro::before {
  content: ""; position: absolute; left: 0; top: 2px; bottom: 2px; width: 2px;
  border-radius: 99px;
  background: linear-gradient(180deg, var(--acc), color-mix(in srgb, var(--acc) 10%, transparent));
  box-shadow: 0 0 12px var(--acc-glow);
}
.pz-intro em { color: var(--acc-2); font-style: normal; }

.pz-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.pz-spread { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; }
.pz-col { display: flex; flex-direction: column; gap: 10px; }
.pz-note { font-size: 12px; color: var(--dim); line-height: 1.6; text-wrap: pretty; }
.pz-note strong { color: var(--text-2); font-weight: 600; }
.pz-mono { font-family: var(--font-mono); }

.pz-card {
  position: relative;
  background: linear-gradient(180deg, #0e131b, #0a0e14);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  padding: 15px 17px;
  box-shadow: 0 8px 22px rgba(0,0,0,.32);
}
.pz-card__head {
  font-size: 10px; letter-spacing: .22em; text-transform: uppercase; color: var(--dim);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.pz-gauge { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: 12px; color: var(--text-2); }
.pz-gauge b { color: var(--acc-2); font-weight: 700; }

/* --------------------------------------------------------------- buttons -- */
.pz-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 16px;
  font-size: 13px; font-weight: 600;
  color: var(--text);
  background: linear-gradient(180deg, var(--panel-3), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: transform 130ms var(--ease), border-color 130ms var(--ease), background 130ms var(--ease), box-shadow 130ms var(--ease);
}
.pz-btn:hover:not(:disabled) { transform: translateY(-1px); border-color: var(--acc); box-shadow: 0 6px 18px rgba(0,0,0,.4); }
.pz-btn:active:not(:disabled) { transform: translateY(0) scale(.985); }
.pz-btn:disabled { opacity: .38; }
.pz-btn:focus-visible { outline: 2px solid var(--acc); outline-offset: 2px; }

.pz-btn--primary {
  color: var(--acc-ink);
  background: linear-gradient(180deg, var(--acc-2), var(--acc));
  border-color: transparent;
  box-shadow: 0 0 24px var(--acc-glow);
}
.pz-btn--primary:hover:not(:disabled) { filter: brightness(1.07); }
.pz-btn--danger { color: #ffd9d5; background: linear-gradient(180deg, #4a2320, #331816); border-color: #5c2b26; }
.pz-btn--ghost  { background: transparent; color: var(--dim); }
.pz-btn--ghost:hover:not(:disabled) { color: var(--text); }
.pz-btn--sm { padding: 5px 11px; font-size: 11px; }
.pz-btn--lg { padding: 13px 26px; font-size: 15px; }

/* --------------------------------------------------------------- choices -- */
.pz-choices { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.pz-choice {
  position: relative;
  display: flex; flex-direction: column; gap: 7px;
  padding: 17px 18px;
  text-align: left;
  background: linear-gradient(180deg, var(--panel-2), #0d1117);
  border: 1px solid var(--line);
  border-radius: var(--r);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
  overflow: hidden;
}
.pz-choice::before {
  content: ""; position: absolute; inset: 0; opacity: 0;
  background: radial-gradient(320px 120px at 50% 0%, var(--acc-wash), transparent 70%);
  transition: opacity 220ms var(--ease);
}
.pz-choice:hover:not(:disabled) { transform: translateY(-3px); border-color: var(--acc); box-shadow: 0 14px 34px rgba(0,0,0,.5); }
.pz-choice:hover:not(:disabled)::before { opacity: 1; }
.pz-choice:disabled { opacity: .4; }
.pz-choice__i { font-size: 26px; line-height: 1; }
.pz-choice__t { font-size: 14px; font-weight: 700; }
.pz-choice__d { font-size: 12px; color: var(--dim); line-height: 1.5; }
.pz-choice__tag {
  align-self: flex-start; margin-top: 3px;
  font-family: var(--font-mono); font-size: 10px;
  padding: 2px 7px; border-radius: 4px;
  color: var(--acc-2); background: var(--acc-wash);
}

/* --------------------------------------------------------------- result --- */
.pz-verdict { display: flex; align-items: center; gap: 14px; }
.pz-verdict__i { font-size: 34px; }
.pz-verdict__t { font-size: 19px; font-weight: 700; }
.pz-verdict.ok   .pz-verdict__t { color: var(--good); }
.pz-verdict.part .pz-verdict__t { color: var(--warn); }
.pz-verdict.bad  .pz-verdict__t { color: var(--bad); }
.pz-deltas { display: flex; flex-wrap: wrap; gap: 7px; }

/* --------------------------------------------------------------- overlay -- */
.ps-overlay {
  position: fixed; inset: 0; z-index: 60;
  display: none; place-items: center;
  padding: 24px;
  background: rgba(4,6,9,.86);
  backdrop-filter: blur(7px);
  overflow: auto;
}
.ps-overlay.is-on { display: grid; animation: pzFade 320ms var(--ease); }
@keyframes pzFade { from { opacity: 0; } }

.ps-title {
  width: min(720px, 100%);
  padding: 40px;
  text-align: center;
  animation: pzRise 520ms var(--ease);
}
@keyframes pzRise { from { opacity: 0; transform: translateY(26px); } }
.ps-title__mark { font-size: 60px; line-height: 1; filter: drop-shadow(0 0 26px var(--acc-glow)); }
.ps-title__h {
  margin: 16px 0 4px;
  font-size: 15px; letter-spacing: .48em; text-transform: uppercase; color: var(--dim);
}
.ps-title__sub {
  font-size: 34px; font-weight: 800; letter-spacing: -.02em;
  background: linear-gradient(180deg, #fff, var(--acc));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.ps-title__blurb { margin: 16px auto 26px; max-width: 52ch; font-size: 14px; line-height: 1.7; color: var(--text-2); }
.ps-title__acts { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.ps-title__seed { display: flex; gap: 8px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }
.ps-input {
  padding: 9px 13px;
  font-family: var(--font-mono); font-size: 13px;
  background: #0a0d13; border: 1px solid var(--line); border-radius: var(--r-sm);
  min-width: 200px;
}
.ps-input:focus { outline: none; border-color: var(--acc); box-shadow: 0 0 0 3px var(--acc-wash); }
.ps-title__hint { margin-top: 14px; font-size: 11px; color: var(--dimmer); line-height: 1.6; }

/* ---------------------------------------------------------------- toasts -- */
.ps-toasts {
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  display: flex; flex-direction: column; gap: 8px; align-items: flex-end;
  pointer-events: none;
}
.ps-toast {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 15px;
  font-size: 13px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-left: 3px solid var(--acc);
  border-radius: var(--r-sm);
  box-shadow: var(--sh-2);
  animation: pzToastIn 340ms var(--ease);
  max-width: 340px;
}
.ps-toast.out { animation: pzToastOut 320ms var(--ease) forwards; }
.ps-toast.good { border-left-color: var(--good); }
.ps-toast.bad  { border-left-color: var(--bad); }
.ps-toast.info { border-left-color: var(--info); }
@keyframes pzToastIn  { from { opacity: 0; transform: translateX(26px); } }
@keyframes pzToastOut { to { opacity: 0; transform: translateX(26px) scale(.96); } }

/* --------------------------------------------------------------- flash ---- */
.ps-flash {
  position: fixed; inset: 0; z-index: 80; pointer-events: none; opacity: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,.16), transparent 70%);
}
.ps-flash.go { animation: pzFlashScreen 620ms var(--ease); }
@keyframes pzFlashScreen { 0% { opacity: 0; } 12% { opacity: 1; } 100% { opacity: 0; } }

.ps-blackout {
  position: fixed; inset: 0; z-index: 85; pointer-events: none;
  background: #000; opacity: 0;
}
.ps-blackout.go { animation: pzBlackout 1500ms var(--ease); }
@keyframes pzBlackout { 0% { opacity: 0; } 22% { opacity: 1; } 70% { opacity: 1; } 100% { opacity: 0; } }

/* ------------------------------------------------------------ dev badge --- */
.ps-dev {
  position: fixed; left: 14px; bottom: 14px; z-index: 90;
  display: flex; align-items: center; gap: 8px;
  padding: 7px 12px;
  font-family: var(--font-mono); font-size: 11px; color: var(--acc-2);
  background: rgba(10,13,19,.92);
  border: 1px solid var(--acc); border-radius: 99px;
}
.ps-dev__dot { width: 7px; height: 7px; border-radius: 99px; background: var(--acc); animation: pzPulse 1.1s infinite; }
@keyframes pzPulse { 50% { opacity: .25; } }

/* ================================================================= ARENA ==
   The free-movement action layer (js/core/arena.js). Canvas draws the world;
   everything you can read or click is still DOM and lives on top of it.

   ENGINE AUTHORS: do not restyle .ps-arena* — the arena owns its look, and
   two engines redefining the same class is a contract violation. Style your
   own .pz-<engine>-* classes inside the station panel instead.
   -------------------------------------------------------------------------- */
.ps-arena {
  position: relative;
  width: 100%;
  height: clamp(380px, 62vh, 660px);
  border-radius: var(--r);
  overflow: hidden;
  background: #04060a;
  border: 1px solid var(--line);
  box-shadow: inset 0 0 90px rgba(0,0,0,.92), 0 20px 48px rgba(0,0,0,.5);
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  isolation: isolate;
  animation: pzArenaIn 640ms var(--ease);
}
.ps-arena.is-compact { height: clamp(280px, 40vh, 420px); }
@keyframes pzArenaIn { from { opacity: 0; transform: scale(.985); filter: blur(6px); } }

.ps-arena__cv {
  position: absolute; inset: 0;
  display: block;
  cursor: crosshair;
  outline: none;
  z-index: 1;
}
.ps-arena__cv:focus-visible { outline: 2px solid var(--acc); outline-offset: -3px; }

.ps-arena__vig {
  position: absolute; inset: 0; z-index: 4; pointer-events: none;
  background: radial-gradient(125% 95% at 50% 48%, transparent 52%, rgba(0,0,0,.6) 100%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.035);
}

/* --- top overlay: chips and meters the engine fills ---------------------- */
.ps-arena__hud {
  position: absolute; top: 10px; left: 10px; right: 10px; z-index: 5;
  display: flex; flex-wrap: wrap; gap: 7px;
  pointer-events: none;
  transition: right 300ms var(--ease);
}
.ps-arena.has-panel .ps-arena__hud { right: calc(min(392px, 64%) + 20px); }
.ps-arena__chip,
.ps-arena__meter {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 11px;
  font-size: 11px; color: var(--text-2);
  background: rgba(8,11,17,.78);
  border: 1px solid var(--line);
  border-radius: 99px;
  backdrop-filter: blur(6px);
  transition: border-color 240ms var(--ease), color 240ms var(--ease);
}
.ps-arena__chip-i { font-size: 12px; line-height: 1; }
.ps-arena__chip-k { font-size: 9px; letter-spacing: .16em; text-transform: uppercase; color: var(--dim); }
.ps-arena__chip-v { font-family: var(--font-mono); font-size: 12px; color: var(--acc-2); font-variant-numeric: tabular-nums; }
.ps-arena__chip.is-warn, .ps-arena__meter.is-warn { border-color: color-mix(in srgb, var(--warn) 55%, transparent); }
.ps-arena__chip.is-warn .ps-arena__chip-v, .ps-arena__meter.is-warn .ps-arena__chip-v { color: var(--warn); }
.ps-arena__chip.is-bad, .ps-arena__meter.is-bad { border-color: color-mix(in srgb, var(--bad) 60%, transparent); animation: pzArenaAlarm 1.6s infinite; }
.ps-arena__chip.is-bad .ps-arena__chip-v, .ps-arena__meter.is-bad .ps-arena__chip-v { color: var(--bad); }
@keyframes pzArenaAlarm { 50% { background: rgba(60,16,14,.8); } }

.ps-arena__mtrack {
  position: relative; width: 72px; height: 5px;
  border-radius: 99px; overflow: hidden;
  background: #0a0d12; border: 1px solid var(--line-soft);
}
.ps-arena__mfill {
  position: absolute; inset: 0 auto 0 0; width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--acc) 45%, #000), var(--acc-2));
  box-shadow: 0 0 8px var(--acc-glow);
  transition: width 380ms var(--ease);
}
.ps-arena__meter.is-bad .ps-arena__mfill { background: linear-gradient(90deg, #5b201c, var(--bad)); box-shadow: 0 0 8px rgba(226,105,95,.5); }

/* --- bottom overlay: real controls -------------------------------------- */
.ps-arena__foot {
  position: absolute; left: 10px; right: 10px; bottom: 10px; z-index: 5;
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
}
.ps-arena__foot .pz-btn { background: rgba(11,15,22,.86); backdrop-filter: blur(6px); }
.ps-arena__note {
  font-size: 11px; line-height: 1.5; color: var(--dim);
  padding: 5px 10px; border-radius: var(--r-sm);
  background: rgba(8,11,17,.72); border: 1px solid var(--line-soft);
  backdrop-filter: blur(6px);
  max-width: 46ch;
}
.ps-arena__note strong { color: var(--acc-2); font-weight: 600; }

/* --- the station panel: an engine's existing DOM, behind a walk ---------- */
.ps-arena__panel {
  position: absolute; top: 10px; right: 10px; bottom: 10px; z-index: 6;
  width: min(392px, 64%);
  display: none;
  flex-direction: column;
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(22,27,37,.97), rgba(12,16,22,.98));
  border: 1px solid var(--line);
  box-shadow: -18px 0 60px rgba(0,0,0,.6), 0 0 0 1px rgba(255,255,255,.03) inset;
  backdrop-filter: blur(9px);
  overflow: hidden;
}
.ps-arena__panel.is-on { display: flex; animation: pzPanelIn 320ms var(--ease); }
@keyframes pzPanelIn { from { opacity: 0; transform: translateX(26px) scale(.97); } }

.ps-arena__phead {
  display: flex; align-items: center; gap: 9px;
  padding: 11px 12px 11px 14px;
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, var(--acc-wash), transparent);
  flex: none;
}
.ps-arena__phead-i { font-size: 18px; line-height: 1; filter: drop-shadow(0 0 10px var(--acc-glow)); }
.ps-arena__phead-t {
  flex: 1; min-width: 0;
  font-size: 11px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--acc-2);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ps-arena__pclose {
  flex: none; width: 24px; height: 24px;
  display: grid; place-items: center;
  font-size: 16px; line-height: 1; color: var(--dim);
  background: transparent; border: 1px solid transparent; border-radius: var(--r-sm);
}
.ps-arena__pclose:hover { color: var(--text); border-color: var(--line); }

.ps-arena__body { flex: 1; min-height: 0; overflow: auto; padding: 14px; }
.ps-arena__body .pz-card { background: #0b0f16; }

@media (max-width: 720px) {
  .ps-arena__panel { top: auto; left: 10px; width: auto; max-height: 62%; }
  .ps-arena__panel.is-on { animation: pzPanelUp 320ms var(--ease); }
  @keyframes pzPanelUp { from { opacity: 0; transform: translateY(26px); } }
  .ps-arena.has-panel .ps-arena__foot { display: none; }
}

/* ------------------------------------------------------------ utilities --- */
.pz-sr {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.pz-hide { display: none !important; }

/* ---------------------------------------------------------- responsive --- */
@media (max-width: 940px) {
  .ps-root { grid-template-columns: 1fr; }
  .ps-side { position: static; max-height: none; }
  .ps-stage { min-height: 420px; padding: 16px; }
  .ps-title { padding: 24px; }
  .ps-title__sub { font-size: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}