*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{
  --accent:#4DD2A8;
  --ink:#F4F5F7;
  --muted:#9AA1AD;
  --dim:#6B7280;
  --line:rgba(255,255,255,.1);
  /* Tile metrics are set by game.js from the space the board actually has. */
  --tw:40px;
  --th:53px;
  --d:4px;
}
html,body{margin:0;height:100%;background:#0D1014;color:var(--ink)}
body{
  font-family:Inter,system-ui,sans-serif;
  touch-action:manipulation;overflow:hidden;
  background:
    radial-gradient(70% 50% at 50% 0%,rgba(77,210,168,.10),transparent 68%),
    linear-gradient(180deg,#141922,#0C0F14);
}
button{font:inherit;color:inherit;cursor:pointer}
#app{
  height:100vh;height:100dvh;width:min(100%,1180px);margin:0 auto;
  padding:8px 10px calc(8px + env(safe-area-inset-bottom,0px));
  display:flex;flex-direction:column;gap:8px;
}

/* ---- header ------------------------------------------------------------ */
.topbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;min-height:42px}
.iconbtn{
  width:40px;height:40px;flex:0 0 auto;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);font-size:17px;font-weight:700;color:#DDE1E8;
  display:grid;place-items:center;
}
.iconbtn:hover{background:rgba(255,255,255,.11)}
.title{flex:1;min-width:0;text-align:center}
.title b{display:block;font:800 20px/1.1 'Bricolage Grotesque',sans-serif;color:var(--accent)}
.title small{
  display:block;margin-top:2px;font:9.5px 'Space Mono',monospace;color:var(--dim);
  letter-spacing:.1em;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.hud{display:flex;justify-content:center;gap:6px;order:5;flex-basis:100%}
.chip{
  display:flex;align-items:baseline;gap:6px;padding:5px 11px;border-radius:999px;
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.07);
}
.chip i{font:normal 9.5px 'Space Mono',monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.chip b{font:700 14px 'Space Mono',monospace;color:#E9ECF1;min-width:2ch;text-align:right}
.chip.warn b{color:#FF9B6B}

/* ---- board --------------------------------------------------------------- */
.table{
  position:relative;flex:1;min-height:0;border-radius:18px;
  background:
    radial-gradient(90% 70% at 50% 30%,rgba(255,255,255,.05),transparent 70%),
    radial-gradient(120% 100% at 50% 0%,#164640,#0F302C 60%,#0B2421);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06),inset 0 18px 40px rgba(0,0,0,.25);
  overflow:hidden;isolation:isolate;
}
.board{position:absolute;left:0;top:0}

/* One element per tile. The face is the tile's own background; the side and
   the green back are a stack of hard shadows offset down-right, which is what
   makes the layers read as stacked rather than printed flat. */
.tile{
  position:absolute;left:0;top:0;width:calc(var(--tw) - var(--d));height:calc(var(--th) - var(--d));
  border-radius:calc(var(--tw) * .14);
  background:linear-gradient(155deg,#FFFEF9 0%,#F7F1E1 55%,#EDE4CC 100%);
  box-shadow:var(--edge);
  transform:translate(var(--x),var(--y));
  transition:transform .16s ease,filter .2s,opacity .2s;
  cursor:pointer;user-select:none;-webkit-user-select:none;
}
.tile svg{position:absolute;inset:7% 8%;width:84%;height:86%;pointer-events:none}
.tile.blocked{filter:brightness(.74) saturate(.7);cursor:default}
.tile.sel{
  transform:translate(var(--x),calc(var(--y) - 3px));
  background:linear-gradient(155deg,#FFFDF0,#FFF2C4);
  box-shadow:0 0 0 2px var(--accent),0 0 16px 3px rgba(77,210,168,.55),var(--edge);
}
.tile.hint{animation:hintpulse 1s ease-in-out 3}
@keyframes hintpulse{50%{box-shadow:0 0 0 3px #FFD166,0 0 20px 5px rgba(255,209,102,.6),var(--edge)}}
.tile.nope{animation:nope .3s}
@keyframes nope{25%{transform:translate(calc(var(--x) - 4px),var(--y))}75%{transform:translate(calc(var(--x) + 4px),var(--y))}}
.tile.gone{
  transition:transform .3s cubic-bezier(.3,.6,.3,1),opacity .3s ease-in;
  transform:translate(var(--gx),var(--gy)) scale(.6);opacity:0;pointer-events:none;
}
.board.instant .tile{transition:none}

.float{
  position:absolute;z-index:5000;pointer-events:none;transform:translate(-50%,-50%);
  font:800 18px 'Bricolage Grotesque',sans-serif;color:#FFE08A;
  text-shadow:0 2px 6px rgba(0,0,0,.6);white-space:nowrap;
  padding:3px 12px 4px;border-radius:14px;background:rgba(8,12,16,.8);box-shadow:0 6px 16px rgba(0,0,0,.35);text-align:center;
  animation:floatup .9s ease-out forwards;
}
.float small{display:block;text-align:center;font:700 11px Inter,sans-serif;color:var(--accent)}
@keyframes floatup{0%{opacity:0;transform:translate(-50%,-30%) scale(.8)}20%{opacity:1;transform:translate(-50%,-60%) scale(1)}100%{opacity:0;transform:translate(-50%,-160%)}}
.spark{position:absolute;z-index:4900;width:7px;height:7px;border-radius:2px;pointer-events:none;animation:spark .6s ease-out forwards}
@keyframes spark{to{transform:translate(var(--sx),var(--sy)) rotate(220deg);opacity:0}}

.winfx{position:absolute;inset:0;pointer-events:none;z-index:6000}
.winfx i{position:absolute;left:50%;top:40%;width:9px;height:14px;border-radius:2px;opacity:0}
.winfx.go i{animation:confetti 1.6s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes confetti{0%{opacity:1;transform:translate(0,0) rotate(0)}100%{opacity:0;transform:translate(var(--fx),var(--fy)) rotate(var(--fr))}}

/* ---- toast --------------------------------------------------------------- */
.toast{
  position:absolute;left:50%;bottom:14px;z-index:7000;max-width:calc(100% - 24px);
  transform:translate(-50%,12px);opacity:0;pointer-events:none;
  padding:9px 16px;border-radius:999px;
  background:rgba(14,18,24,.92);border:1px solid rgba(255,255,255,.12);
  font:600 13px/1.3 Inter,sans-serif;color:#E9ECF1;text-align:center;
  box-shadow:0 10px 26px rgba(0,0,0,.4);
  transition:opacity .2s,transform .2s;
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.stuck{pointer-events:auto;border-radius:16px;padding:12px 14px;border-color:rgba(255,155,107,.45)}
.toast .trow{display:flex;gap:6px;justify-content:center;margin-top:8px}
.toast .trow button{min-height:36px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.08);font-weight:700;font-size:13px}
.toast .trow button.primary{background:var(--accent);border-color:transparent;color:#05261C}

/* ---- action bar ------------------------------------------------------------ */
.actions{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.act{
  min-height:50px;border-radius:14px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:#DDE1E8;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:11.5px;font-weight:700;
}
.act svg{width:19px;height:19px}
.act:hover{background:rgba(255,255,255,.1)}
.act:disabled{opacity:.38;cursor:default}
.act.ready{background:#FF9B6B;border-color:transparent;color:#2B1206;animation:ready 1.4s ease-out infinite}
@keyframes ready{0%{box-shadow:0 0 0 0 rgba(255,155,107,.55)}70%{box-shadow:0 0 0 10px rgba(255,155,107,0)}100%{box-shadow:0 0 0 0 rgba(255,155,107,0)}}

/* Wide, short frames — a phone on its side, and the 16:10 frame the game page
   embeds on desktop: the clock joins the header, actions become a rail. */
@media(min-aspect-ratio:5/4) and (max-height:620px){
  #app{display:grid;grid-template-columns:1fr auto;grid-template-rows:auto 1fr;gap:8px 10px;width:100%;
       padding:8px max(10px,env(safe-area-inset-right)) 8px max(10px,env(safe-area-inset-left))}
  .topbar{grid-column:1/-1;flex-wrap:nowrap}
  .title{text-align:left;flex:0 1 auto}
  .hud{order:0;flex-basis:auto;margin-left:auto}
  .actions{grid-template-columns:1fr;grid-auto-rows:1fr;width:68px}
  .act{min-height:0}
}

/* ---- modal ------------------------------------------------------------------- */
.modal{
  position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:16px;
  background:rgba(6,8,11,.66);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.modal[hidden]{display:none}
.modal-card{
  width:min(100%,380px);max-height:calc(100dvh - 32px);overflow:auto;padding:22px 20px;border-radius:20px;
  background:#171B22;border:1px solid rgba(255,255,255,.08);box-shadow:0 30px 60px rgba(0,0,0,.5);
  animation:pop .22s ease-out;
}
@keyframes pop{from{transform:translateY(10px) scale(.98);opacity:0}}
.modal-card h2{margin:0 0 6px;font:800 24px 'Bricolage Grotesque',sans-serif;color:var(--accent)}
.modal-card p,.modal-card li{font-size:14px;line-height:1.55;color:#C3C9D3}
.modal-card ul{padding-left:18px;margin:8px 0}
.mlist{display:grid;gap:8px;margin-top:12px}
.button{
  min-height:46px;padding:0 16px;border-radius:13px;border:1px solid var(--line);
  background:rgba(255,255,255,.06);font-weight:700;font-size:14px;color:#E9ECF1;
}
.button:hover{background:rgba(255,255,255,.11)}
.button.primary{background:var(--accent);border-color:transparent;color:#05261C}
.mrow{display:flex;gap:8px;margin-top:16px}
.mrow .button{flex:1}
.opt{
  display:flex;align-items:center;gap:12px;width:100%;text-align:left;
  min-height:58px;padding:10px 14px;border-radius:14px;border:1.5px solid var(--line);
  background:rgba(255,255,255,.04);
}
.opt b{display:block;font-size:15px;color:#EEF0F3}
.opt small{display:block;font-size:12px;color:var(--muted);margin-top:1px}
.opt .oi{width:36px;height:36px;flex:0 0 auto;border-radius:10px;display:grid;place-items:center;background:rgba(77,210,168,.14);color:var(--accent)}
.opt .oi svg{width:22px;height:22px}
.opt[aria-pressed="true"]{border-color:var(--accent);background:rgba(77,210,168,.08)}
.opt .done{margin-left:auto;font:10px 'Space Mono',monospace;color:var(--accent);letter-spacing:.06em;text-transform:uppercase}
.stars{font-size:30px;letter-spacing:4px;color:#FFD166;margin:4px 0 2px}
.stars span{color:#3A4150}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:12px 0 4px}
.grid3 div{padding:10px 6px;border-radius:12px;background:rgba(255,255,255,.04);text-align:center}
.grid3 b{display:block;font:700 18px 'Space Mono',monospace;color:#EEF0F3}
.grid3 small{font:9.5px 'Space Mono',monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.mnote{font-size:12.5px !important;color:var(--muted) !important;margin:10px 0 0}
.newbest{display:inline-block;margin-left:6px;padding:2px 7px;border-radius:999px;background:rgba(255,209,102,.16);color:#FFD166;font:700 10px Inter,sans-serif;vertical-align:middle}

@media(max-width:380px){
  .chip{padding:4px 9px}
  .chip b{font-size:13px}
  .act{min-height:46px;font-size:11px}
}
@media(prefers-reduced-motion:reduce){
  .tile,.toast{transition:none}
  .tile.hint,.tile.nope,.act.ready,.modal-card,.float,.spark,.winfx.go i{animation:none}
}