/* During a theme swap, kill every transition/animation so the page repaints
   once instantly instead of janking through hundreds of color transitions. */
:root.theme-switching, :root.theme-switching *, :root.theme-switching *::before, :root.theme-switching *::after{
  transition:none !important;
  animation-duration:0s !important;
}
:root{
  --paper:#f7f6f1;
  --paper-raised:#ffffff;
  --ink:#17181b;
  --ink-soft:#74757a;
  --tile:#ffffff;
  --track:#dcd9cf;
  --accent:#2f43e0;
  --accent-strong:#1f2fb0;
  --extra:#e0631a;
  --danger:#d92d20;
  --focus:#2f43e0;
  --hint:#d9def8;
  --shadow-color:rgba(23,24,27,.12);
  --border-soft:rgba(23,24,27,.06);
  --tile-border:rgba(23,24,27,.10);
  --focus-shadow:#1f2fb0;
  --definition-shadow:rgba(23,24,27,.06);
  --space-1:4px;
  --space-2:8px;
  --space-3:12px;
  --space-4:16px;
  --space-5:24px;
  --space-6:32px;
  --space-7:48px;
  --radius-1:8px;
  --radius-2:12px;
  --radius-3:20px;
  --radius-round:999px;
  --board-size:min(86vw,52vh,420px);
  --font-display:'Orbitron',system-ui,sans-serif;
  --font-tile:'Space Grotesk','Inter',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --font-mono:'Space Grotesk','Inter',system-ui,sans-serif;
  --ease-out:cubic-bezier(.23,1,.32,1);
  --ease-io:cubic-bezier(.76,0,.24,1);
  --ease-pop:cubic-bezier(.34,1.56,.5,1);
  --tile-key-edge:#ffffff;
  --well:#f0eee7;
  --key-shadow:#e6e3da;
  --blue:#2f43e0;
  --bridge:#d0ccc0;
  /* fixed tile-fill colors: strong enough for white text in light AND dark */
  --fill:#2f43e0;
  --fill-x:#e0631a;
  /* correct-word feedback: deliberately distinct from --fill (the in-progress
     trace color) so a found word reads as "done", not just "still selected" */
  --success:#1f9d57;
  color-scheme:light dark;
}

/* Dark tokens apply when the user forces dark (:root[data-theme="dark"]), OR
   when the OS is dark and the user has made no explicit choice. An explicit
   data-theme always wins over the OS preference. */
:root[data-theme="dark"]{
  --paper:#101113;
  --paper-raised:#191b1e;
  --ink:#f1f0ea;
  --ink-soft:#9a9b9f;
  --tile:#20232a;
  --track:#33353b;
  --accent:#7d92ff;
  --accent-strong:#a9b6ff;
  --extra:#f2924a;
  --danger:#f2665c;
  --focus:#7d92ff;
  --hint:#2a2f52;
  --shadow-color:rgba(0,0,0,.5);
  --border-soft:rgba(255,255,255,.07);
  --tile-border:rgba(255,255,255,.12);
  --focus-shadow:#5a6fe0;
  --definition-shadow:rgba(0,0,0,.3);
  --tile-key-edge:#22242a;
  --well:#161719;
  --key-shadow:#0a0b0c;
  --blue:#7d92ff;
  --bridge:#33353b;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme]){
    --paper:#101113;
    --paper-raised:#191b1e;
    --ink:#f1f0ea;
    --ink-soft:#9a9b9f;
    --tile:#20232a;
    --track:#33353b;
    --accent:#7d92ff;
    --accent-strong:#a9b6ff;
    --extra:#f2924a;
    --danger:#f2665c;
    --focus:#7d92ff;
    --hint:#2a2f52;
    --shadow-color:rgba(0,0,0,.5);
    --border-soft:rgba(255,255,255,.07);
    --tile-border:rgba(255,255,255,.12);
    --focus-shadow:#5a6fe0;
    --definition-shadow:rgba(0,0,0,.3);
    --tile-key-edge:#22242a;
    --well:#161719;
    --key-shadow:#0a0b0c;
    --blue:#7d92ff;
    --bridge:#33353b;
  }
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;min-height:100%;}
body{
  min-height:100vh;
  min-height:100dvh;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  display:flex;
  justify-content:center;
  overflow:hidden;
  user-select:none;
  -webkit-user-select:none;
  -webkit-touch-callout:none;
  touch-action:manipulation;
}
button,a{font:inherit;}
button{color:inherit;}
a{color:inherit;}
button:focus-visible,a:focus-visible,[tabindex]:focus-visible{
  outline:3px solid var(--focus);
  outline-offset:3px;
}
/* The board takes focus to accept keyboard input, and the results screen takes
   focus programmatically for screen readers — but the focus ring around either
   reads as a stray "selector" box, so suppress it on both specifically. */
#board:focus,#board:focus-visible,
#complete:focus,#complete:focus-visible{outline:none;}

.app{
  width:100%;
  max-width:720px;
  padding:calc(var(--space-4) + env(safe-area-inset-top)) var(--space-4) calc(var(--space-6) + env(safe-area-inset-bottom));
  opacity:0;
  transition:opacity .18s ease-out;
}
body.loaded .app{opacity:1;}

.game-header{
  position:relative;
  width:var(--board-size);
  min-height:56px;
  margin:0 auto;
  display:grid;
  grid-template-columns:48px 1fr auto;
  align-items:center;
  gap:var(--space-2);
}
.brand-lockup{
  min-width:0;
  margin:0;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:var(--space-2);
  font-family:var(--font-display);
  font-weight:700;
}
.brand-track{
  position:relative;
  isolation:isolate;
  padding:0 var(--space-1);
  font-family:var(--font-display);
  font-optical-sizing:auto;
  font-size:26px;
  font-weight:400;
  line-height:1;
  letter-spacing:-.01em;
}
.brand-track.is-character{
  color:var(--accent);
  text-transform:uppercase;
  letter-spacing:.02em;
  font-weight:700;
  font-size:19px;
  max-width:100%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  text-shadow:0 0 18px color-mix(in srgb,var(--accent) 45%,transparent);
}
.game-label[hidden]{display:none;}
.game-label{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  max-width:54vw;
  height:24px;
  padding:1px var(--space-2) 0;
  border-radius:var(--radius-round);
  background:color-mix(in srgb,var(--accent) 12%,transparent);
  color:var(--accent);
  font-family:var(--font-display);
  font-style:italic;
  font-weight:500;
  font-size:14px;
  letter-spacing:0;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.header-actions{display:flex;gap:var(--space-1);}
.icon-button{
  position:relative;
  width:44px;
  height:44px;
  padding:0;
  border:0;
  border-radius:var(--radius-round);
  background:transparent;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  text-decoration:none;
  cursor:pointer;
  transition:background .16s ease-out,color .16s ease-out;
}
.icon-button svg{width:24px;height:24px;pointer-events:none;}
.theme-toggle{
  /* Paint the complete target before the first interaction. Besides making
     the affordance visible, this avoids transparent-control/SVG hit-testing
     quirks in mobile browsers. */
  width:56px;
  height:56px;
  flex:0 0 56px;
  background:var(--paper-raised);
  border:2px solid color-mix(in srgb,var(--ink) 30%,var(--paper));
  box-shadow:0 3px 10px color-mix(in srgb,var(--shadow-color) 75%,transparent);
  touch-action:manipulation;
}
.theme-toggle svg{width:27px;height:27px;}
/* theme toggle shows the icon of the theme you'll switch TO */
.theme-sun{display:none;}
.theme-moon{display:block;}
:root[data-theme="dark"] .theme-sun{display:block;}
:root[data-theme="dark"] .theme-moon{display:none;}
@media (prefers-color-scheme:dark){
  :root:not([data-theme]) .theme-sun{display:block;}
  :root:not([data-theme]) .theme-moon{display:none;}
}
/* Scoped to real hover devices: an unconditional :hover on a button/link is a
   known WebKit trap on touch (iOS treats the first tap as "hover" and needs a
   second tap to actually fire the click) -- gating on hover:hover avoids that
   without losing hover feedback for mouse users. */
@media (hover:hover){.icon-button:hover{background:var(--tile);color:var(--accent-strong);}}
.hint-badge{
  position:absolute;
  top:1px;
  right:0;
  min-width:17px;
  height:17px;
  padding:0 var(--space-1);
  border:2px solid var(--paper);
  border-radius:var(--radius-round);
  background:var(--accent);
  color:var(--paper-raised);
  font-family:var(--font-display);
  font-size:10px;
  line-height:13px;
  text-align:center;
}

.word-status{
  position:relative;
  width:var(--board-size);
  height:40px;
  margin:var(--space-4) auto 0;
  display:flex;
  align-items:center;
  justify-content:center;
}
.forming-confetti,.c-confetti{
  position:absolute;
  inset:50% auto auto 50%;
  width:360px;
  height:200px;
  max-width:100vw;
  transform:translate(-50%,-50%);
  pointer-events:none;
}
.forming{
  position:relative;
  z-index:1;
  max-width:100%;
  font-family:var(--font-display);
  font-size:24px;
  font-weight:700;
  line-height:1;
  letter-spacing:.02em;
  color:var(--accent);
  text-align:center;
  white-space:nowrap;
  transition:opacity .18s ease-out,transform .2s var(--ease-out);
}
.forming.remaining{color:var(--ink-soft);font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;}
.forming.active{text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:6px;}
.forming.active.pressing{text-decoration:none;}
.forming.complete{color:var(--accent);}
.forming.res-good{color:var(--success);}
.forming.res-bonus{color:var(--extra);}
.forming.feedback.bad{color:var(--danger);}
.forming.feedback.warn{color:var(--extra);}
.forming.fading{opacity:0;transform:translateY(-8px);}
.forming.res-good,.forming.res-bonus{animation:word-pop .38s var(--ease-out) both;}
.forming.feedback{animation:message-shake .28s ease-out;}

.board-wrap{
  margin-top:var(--space-5);
  display:flex;
  justify-content:center;
}
#board{
  position:relative;
  width:var(--board-size);
  aspect-ratio:1;
  padding:var(--space-4);
  border-radius:var(--radius-2);
  background:var(--paper-raised);
  border:1px solid var(--border-soft);
  box-shadow:0 1px 0 var(--border-soft),0 20px 44px -28px var(--shadow-color);
  touch-action:none;
}
#boardRotate{position:absolute;inset:0;transform-origin:50% 50%;transition:transform .72s var(--ease-out);}
#boardRotate.no-rot-trans,#boardRotate.no-rot-trans .tile-letter{transition:none!important;}
.tile-letter{display:block;transform:rotate(var(--tile-rot,0deg));transition:transform .72s var(--ease-out);}
#bridges{position:absolute;inset:0;width:100%;height:100%;overflow:visible;}
.bridge,.pathseg{fill:none;stroke:var(--bridge);stroke-width:6;stroke-linecap:round;stroke-linejoin:round;transition:opacity .22s ease-out,stroke .16s ease-out;}
.pathseg.live{stroke:var(--fill);}
.bridge.res-good,.pathseg.res-good{stroke:var(--success);}
.bridge.res-bonus,.pathseg.res-bonus{stroke:var(--fill-x);}
.bridge.hint-bridge{stroke:var(--hint);}
.bridge.gone{opacity:0;stroke-width:0;}
.tile{
  position:absolute;
  z-index:2;
  width:20%;
  aspect-ratio:1;
  transform:translate(-50%,-50%);
  border:1px solid var(--tile-border);
  border-radius:22%;
  background:var(--tile);
  box-shadow:0 1px 2px var(--shadow-color),0 8px 16px -10px var(--shadow-color);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--ink);
  font-family:var(--font-tile);
  font-optical-sizing:auto;
  font-size:clamp(28px,8vw,40px);
  font-weight:600;
  text-transform:uppercase;
  cursor:pointer;
  transition:background .16s var(--ease-out),color .16s var(--ease-out),box-shadow .16s var(--ease-out),transform .16s var(--ease-pop),border-color .16s var(--ease-out);
}
/* active/found tiles fill with the accent and lift slightly */
.tile.active{
  background:var(--fill);
  border-color:var(--fill);
  color:#fff;
  box-shadow:0 6px 16px -4px color-mix(in srgb,var(--fill) 50%,transparent);
  transform:translate(-50%,-50%) scale(1.05);
}
.tile.hint-letter{background:var(--hint);}
.tile.res-good{background:var(--success);border-color:var(--success);color:#fff;box-shadow:0 6px 16px -4px color-mix(in srgb,var(--success) 50%,transparent);}
.tile.res-bonus{background:var(--fill-x);border-color:var(--fill-x);color:#fff;}
.tile.gone{opacity:0;pointer-events:none;}
.tile.pop{animation:tile-pop .45s var(--ease-out) both;}
.tile.shake{animation:tile-shake .28s ease-out;}
.tile.vanish{animation:tile-vanish .42s ease-in both;}
.bridge.vanish{animation:bridge-vanish .42s ease-in both;}
.tile.hint-pulse,.tile.hint-pulse-lit{animation:hint-pop .62s var(--ease-out) both;}
#board.no-trans .tile,#board.no-trans .bridge,#board.no-trans .pathseg{transition:none!important;animation:none!important;}
#board.board-in{animation:board-in .3s var(--ease-out) both;}
#board.spin-pulse{animation:board-pulse .72s var(--ease-out);}

.game-foot{margin-top:var(--space-5);display:flex;flex-direction:column;align-items:center;gap:var(--space-3);}
.foot-meta{display:flex;flex-direction:column;align-items:center;gap:6px;}
.foot-hint{margin:0;font-size:12px;color:var(--ink-soft);text-align:center;}
.foot-hint b{color:var(--extra);font-weight:600;}
.progress-counts{display:flex;gap:var(--space-2);}
.count{
  display:inline-flex;align-items:baseline;gap:4px;
  padding:6px 12px;border:1px solid var(--track);border-radius:var(--radius-round);
  background:var(--paper-raised);color:var(--ink-soft);
  font-family:var(--font-body);font-size:13px;font-weight:500;
}
.count b{font-weight:700;font-variant-numeric:tabular-nums;color:var(--ink);}
.count-words b{color:var(--accent);}
.count-bonus b{color:var(--extra);}
.count.is-complete{border-color:color-mix(in srgb,var(--ok) 40%,var(--track));}
.count.is-complete b{color:var(--ok);}
.play-timer{
  min-width:130px;
  padding:var(--space-2) var(--space-5);
  border:1px solid var(--track);
  border-radius:var(--radius-1);
  background:var(--paper-raised);
  color:var(--ink);
  font-family:var(--font-mono);
  font-weight:600;
  font-size:30px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
  text-align:center;
}
.play-timer-val.penalty,#playTimerVal.penalty{color:var(--extra);}

.tutorial-copy{display:none;}
body.tutorial .word-status,
body.tutorial .board-tools,
body.tutorial .game-foot{display:none;}
/* Keep scrolling as a last-resort accessibility fallback at extreme zoom, but
   the normal tutorial layout fits in one viewport once game-only controls are
   removed. */
body.tutorial{
  --board-size:min(86vw,48vh,420px);
  overflow-y:auto;
}
/* Keep the theme toggle reachable during the tutorial (every first-time
   player's very first screen) — only the back button and title are
   irrelevant there. Full display:none on #appHeader used to remove the
   toggle from layout entirely (0x0), so taps on it silently did nothing. */
body.tutorial #appHeader .lobby-back,body.tutorial #appHeader .brand-lockup{visibility:hidden;}
body.tutorial .tutorial-copy{
  display:block;
  width:var(--board-size);
  height:144px;
  margin:0 auto;
  text-align:left;
  color:var(--ink);
  font-family:var(--font-display);
  font-size:clamp(18px,5vw,24px);
  font-weight:600;
  line-height:1.45;
}
.tutorial-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-3);}
.tutorial-badge{
  display:inline-flex;align-items:center;min-height:30px;padding:2px var(--space-3) 0;
  border-radius:var(--radius-round);background:var(--accent);color:#fff;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
}
.tutorial-progress{color:var(--ink-soft);font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;}
.tutorial-instruction{height:58px;font-size:clamp(17px,4vw,22px);line-height:1.3;}
.tutorial-note{margin:var(--space-1) 0 0;color:var(--ink-soft);font-family:var(--font-body);font-size:13px;font-weight:500;line-height:1.4;}
.tutorial-copy b{color:var(--accent-strong);}
.tutorial-instruction.tut-anim-out{animation:tutorial-out .16s ease-out forwards;}
.tutorial-instruction.tut-anim-in{animation:tutorial-in .24s var(--ease-out) both;}
.tutorial-skip{
  display:none;
  margin:var(--space-4) auto 0;
}
body.tutorial .tutorial-skip{display:block;}
body.tutorial.done .tutorial-skip,body.tutorial.done .tutorial-copy{display:none;}
.text-button{
  padding:var(--space-2) var(--space-3);
  border:0;
  border-radius:var(--radius-1);
  background:transparent;
  color:var(--ink-soft);
  font-weight:700;
  text-decoration:underline;
  text-underline-offset:4px;
  cursor:pointer;
}
@media (hover:hover){.text-button:hover{color:var(--accent-strong);}}

.extra-announcement{
  position:fixed;
  z-index:20;
  left:50%;
  bottom:calc(var(--space-6) + env(safe-area-inset-bottom));
  min-width:144px;
  padding:var(--space-3) var(--space-5);
  border-radius:var(--radius-round);
  background:var(--extra);
  color:var(--paper-raised);
  box-shadow:0 10px 28px var(--shadow-color);
  font-family:var(--font-display);
  font-weight:700;
  text-align:center;
  opacity:0;
  pointer-events:none;
  transform:translate(-50%,12px);
  transition:opacity .18s ease-out,transform .2s var(--ease-out);
}
.extra-announcement.show{opacity:1;transform:translate(-50%,0);}

body.done{overflow-y:auto;}
body.done .word-status,body.done .board-wrap,body.done .game-foot,body.done .board-tools{display:none;}

/* Rotate: the one in-game control, a clearly labelled pill under the board. */
.board-tools{width:var(--board-size);margin:var(--space-3) auto 0;display:flex;justify-content:center;}
.board-tool{
  display:inline-flex;align-items:center;gap:var(--space-2);
  min-height:44px;padding:0 var(--space-4);
  border:1px solid var(--line);border-radius:var(--radius-round);
  background:var(--paper-raised);color:var(--ink-soft);
  font-family:var(--font-body);font-size:14px;font-weight:600;letter-spacing:.02em;
  cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation;
  transition:color .16s var(--ease-out),border-color .16s var(--ease-out),transform .12s var(--ease-out);
}
@media (hover:hover){.board-tool:hover{color:var(--ink);border-color:var(--muted);}}
.board-tool:active{transform:scale(.96);}
.board-tool svg{width:18px;height:18px;transition:transform .5s var(--ease-out);}
.board-tool.spinning svg{transform:rotate(360deg);}

/* Quiet, deliberate scratch-restart — small text link, not a primary control. */
.restart-link{
  margin-top:var(--space-1);background:none;border:0;padding:var(--space-1) var(--space-2);
  color:var(--ink-soft);font-family:var(--font-body);font-size:12px;font-weight:600;
  letter-spacing:.04em;text-decoration:underline;text-underline-offset:3px;
  text-decoration-color:var(--line);cursor:pointer;-webkit-tap-highlight-color:transparent;
  opacity:.7;transition:opacity .16s var(--ease-out),color .16s var(--ease-out);
}
@media (hover:hover){.restart-link:hover{opacity:1;color:var(--ink);}}
.complete-screen{
  display:none;
  width:100%;
  max-width:520px;
  margin:var(--space-5) auto 0;
  padding-bottom:var(--space-7);
}
.complete-screen.show{display:block;}
.results-kicker{
  margin:0 0 var(--space-1);
  color:var(--ink-soft);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  text-align:center;
  text-transform:uppercase;
}
.results-title{
  margin:0 0 var(--space-4);
  font-family:var(--font-display);
  font-size:32px;
  text-align:center;
}
.c-line{opacity:0;}
.complete-screen.show .c-line{animation:result-in .42s var(--ease-out) both;}
.c-time{position:relative;text-align:center;}
.c-time-val{position:relative;z-index:1;display:block;font-family:var(--font-display);font-size:52px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1;}
.c-score-breakdown{display:block;min-height:20px;margin-top:var(--space-2);color:var(--ink-soft);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;}
.c-msg{min-height:24px;margin:var(--space-3) 0 0;text-align:center;font-family:var(--font-display);font-weight:600;}
.results-words{margin-top:var(--space-6);display:grid;gap:var(--space-6);}
.word-group h3{margin:0 0 var(--space-3);font-family:var(--font-display);font-size:18px;letter-spacing:.04em;}
.definition-list{display:grid;gap:var(--space-3);}
.def-item{
  padding:var(--space-4);
  border:1px solid var(--track);
  border-radius:var(--radius-2);
  background:var(--paper-raised);
  box-shadow:0 4px 0 var(--definition-shadow);
}
.def-word{font-family:var(--font-display);font-size:19px;font-weight:700;letter-spacing:.08em;}
.def-word.bonus{color:var(--extra);}
.def-divider{width:32px;height:2px;margin:var(--space-2) 0;background:var(--track);}
.def-text{color:var(--ink-soft);font-size:17px;line-height:1.45;}
.def-ex{margin-top:var(--space-2);color:var(--ink-soft);font-style:italic;}
.c-actions{margin-top:var(--space-6);display:grid;gap:var(--space-2);}
.button{
  display:flex;
  width:100%;
  min-height:48px;
  padding:var(--space-3) var(--space-5);
  border:0;
  border-radius:var(--radius-2);
  align-items:center;
  justify-content:center;
  font-family:var(--font-display);
  font-weight:700;
  text-decoration:none;
  cursor:pointer;
}
.button-primary{background:var(--accent);color:var(--paper-raised);}
@media (hover:hover){.button-primary:hover{background:var(--accent-strong);}}
.button-secondary{background:transparent;color:var(--ink);border:1.5px solid var(--tile-border);}
@media (hover:hover){.button-secondary:hover{border-color:var(--ink-soft);}}
.c-tut-head,.c-tut-actions{display:none;}
.complete-screen.tut .results-title,.complete-screen.tut .results-kicker,.complete-screen.tut .results-words,.complete-screen.tut .c-actions,.complete-screen.tut .c-msg{display:none;}
.complete-screen.tut .c-tut-head{display:block;margin-bottom:var(--space-4);font-family:var(--font-display);font-size:28px;font-weight:700;text-align:center;}
.complete-screen.tut .c-tut-actions{display:block;margin-top:var(--space-5);}

.puz-loader{
  position:fixed;
  z-index:50;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:var(--space-3);
  background:var(--paper);
  opacity:0;
  visibility:hidden;
  transition:opacity .16s ease-out;
}
.puz-loader.show{opacity:1;visibility:visible;}
.puz-spinner{width:36px;height:36px;border:4px solid var(--track);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;}
.puz-loading-text{font-family:var(--font-display);font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);}

@keyframes spin{to{transform:rotate(360deg);}}
@keyframes board-in{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}
@keyframes board-pulse{50%{transform:scale(.94);}}
@keyframes word-pop{from{opacity:0;transform:translateY(6px) scale(.94);}to{opacity:1;transform:none;}}
@keyframes tile-pop{50%{transform:translate(-50%,-50%) scale(1.1);}}
@keyframes tile-shake{25%{transform:translate(calc(-50% - 3px),-50%);}75%{transform:translate(calc(-50% + 3px),-50%);}}
@keyframes tile-vanish{to{opacity:0;transform:translate(-50%,-50%) scale(.72);}}
@keyframes bridge-vanish{to{opacity:0;stroke-width:0;}}
@keyframes hint-pop{50%{transform:translate(-50%,-50%) scale(1.08);background:var(--focus);color:var(--paper-raised);}100%{background:var(--hint);}}
@keyframes message-shake{25%{transform:translateX(-3px);}75%{transform:translateX(3px);}}
@keyframes tutorial-out{to{opacity:0;transform:translateY(-4px);}}
@keyframes tutorial-in{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}
@keyframes result-in{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}

@media (max-width:480px){
  :root{--board-size:min(86vw,48vh,380px);}
  .app{padding-inline:var(--space-3);}
  .game-header{grid-template-columns:40px 1fr auto;gap:var(--space-1);}
  .brand-track{font-size:21px;padding-inline:var(--space-1);}
  .header-actions{gap:2px;}
  .icon-button{width:44px;height:44px;}
  .tile{font-size:clamp(22px,7vw,32px);}
  .complete-screen{margin-top:var(--space-4);}
}

@media (max-height:680px) and (orientation:portrait){
  :root{--board-size:min(82vw,45vh,340px);}
  .word-status{margin-top:var(--space-2);}
  .board-wrap{margin-top:var(--space-3);}
  .game-foot{margin-top:var(--space-3);}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;}
}