/* البرج · Burj. Dark only: the game is set at night. Colors sampled from the approved mockup. */
:root{
  --font:"IBM Plex Sans Arabic","Segoe UI",Tahoma,"Noto Sans Arabic",sans-serif;
  --sky-top:#090D27;--sky-bottom:#060818;--glow:#232F69;
  --t:#F2F4FA;--m:#8488A0;--m2:#5F6688;
  --blue:#7AA2FF;--blue-m:#6586D9;--on-blue:#0A1030;
  --gold:#FFCF6B;--gold-a:#FFCE68;--gold-b:#F5A725;--on-gold:#2A1800;
  --fill:#0F1640;--fill-2:#121945;--fill-3:#141A38;--line:#1F2858;--line-2:#212B65;--outline:#5A73B8;
  --silver:#CFD6EA;--bronze:#D08A4E;--rank:#1C2450;
  --bad:#FF8F8F;--ok:#7BE0A6;
  --r:12px;--r-lg:16px;
  --floor-h:38px;--gap:9px;
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;height:100%}
body{
  height:100vh;height:100dvh;font-family:var(--font);color:var(--t);line-height:1.6;
  background:var(--sky-bottom);overflow-x:hidden;-webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;-webkit-tap-highlight-color:transparent;
}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
svg{width:1.25em;height:1.25em;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

/* Sky: static gradients only, nothing animated, cheap on old phones */
.sky{position:fixed;inset:0;z-index:-1;
  background:radial-gradient(70% 34% at 50% 0,var(--glow),transparent 100%),linear-gradient(180deg,var(--sky-top) 30%,var(--sky-bottom))}
.stars{position:absolute;inset:0;opacity:.55;background-image:
  radial-gradient(1px 1px at 12% 9%,#fff 50%,transparent 51%),
  radial-gradient(1px 1px at 52% 6%,#cfe0ff 50%,transparent 51%),
  radial-gradient(1px 1px at 81% 14%,#fff 50%,transparent 51%),
  radial-gradient(1px 1px at 33% 24%,#fff 50%,transparent 51%),
  radial-gradient(1px 1px at 90% 38%,#cfe0ff 50%,transparent 51%),
  radial-gradient(1px 1px at 8% 52%,#fff 50%,transparent 51%),
  radial-gradient(1px 1px at 70% 61%,#fff 50%,transparent 51%)}

/* Header */
.top{width:100%;max-width:520px;margin:0 auto;padding:18px 20px 0;padding-top:max(18px,env(safe-area-inset-top))}
.top-row{display:flex;align-items:center;justify-content:space-between}
.brand{text-decoration:none}
.brand h1{font-size:1.875rem;line-height:1.3;font-weight:700;color:var(--gold)}
.lab{color:var(--m);font-size:.8125rem;text-decoration:none;direction:ltr}
.tagline{color:#B9BED3;font-size:.9375rem;margin-top:2px}
body[data-view="v-floor"] .tagline,body[data-view="v-board"] .tagline{display:none}

main{flex:1;min-height:0;display:flex;flex-direction:column;width:100%;max-width:520px;margin:0 auto}
.view{flex:1;display:flex;flex-direction:column;min-height:0}

/* Buttons */
.btn{display:flex;align-items:center;justify-content:center;gap:10px;min-height:54px;padding:0 20px;border-radius:var(--r-lg);font-weight:700;font-size:1.125rem;text-decoration:none;transition:transform .12s,opacity .2s;width:100%}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.55;cursor:default}
.btn-gold{background:linear-gradient(90deg,var(--gold-a),var(--gold-b));color:var(--on-gold);box-shadow:0 10px 28px -14px rgba(245,167,37,.8)}
.btn-outline{min-height:50px;font-size:1rem;background:transparent;border:2px solid var(--outline);color:var(--t)}
.btn.busy{pointer-events:none}
.btn.busy::after{content:"";width:18px;height:18px;border-radius:50%;border:2.5px solid currentColor;border-top-color:transparent;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.links{display:flex;justify-content:center;flex-wrap:wrap;gap:4px 18px}
.link{color:var(--blue);font-size:.875rem;padding:8px 2px;text-decoration:underline;text-decoration-color:rgba(122,162,255,.4);text-underline-offset:4px}

.dock{padding:12px 20px calc(14px + env(safe-area-inset-bottom));display:grid;gap:10px}
.status{text-align:center;color:#C9CDDD;font-size:.9375rem;min-height:1.6em}
.status b{color:var(--gold)}

/* 1. Tower */
#v-tower{overflow:hidden}
.tower-scroll{position:relative;flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;scrollbar-width:none;display:flex;flex-direction:column}
.tower-scroll::-webkit-scrollbar{display:none}
.tower{position:relative;width:min(220px,60vw);margin:auto auto 0;padding:14px 0 4px;display:flex;flex-direction:column-reverse;gap:var(--gap)}
.fl{position:relative;flex:none;height:var(--floor-h);border-radius:8px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;
  font-size:.875rem;font-weight:700;border:1px solid transparent;transition:background .5s,color .5s,border-color .5s}
.fl.solved{background:linear-gradient(270deg,#FED786,#F6B946);color:var(--on-gold);cursor:pointer;box-shadow:0 4px 14px -8px rgba(246,185,70,.7)}
.fl.current{background:var(--fill);color:#fff;cursor:pointer}
.fl.locked{background:var(--fill-3);border:1px dashed var(--line);color:var(--m2)}
.fl.locked .st{font-weight:400}
.roof{flex:none;position:relative;height:44px;margin:0 -8px -2px;background:var(--fill-3);clip-path:polygon(50% 0,100% 100%,0 100%);transition:background .6s}
.roof.lit{background:linear-gradient(180deg,#FED786,#F6B946)}

/* «أنت هنا»: one frame that slides up the tower on every correct answer */
.ring{position:absolute;inset-inline:-8px;bottom:0;height:calc(var(--floor-h) + 8px);border:2px solid var(--blue);border-radius:10px;pointer-events:none;
  box-shadow:0 0 18px rgba(122,162,255,.45),inset 0 0 12px rgba(122,162,255,.15);
  transform:translateY(calc(var(--at,0) * (var(--floor-h) + var(--gap)) * -1));transition:transform 1s cubic-bezier(.6,-.2,.25,1.2),opacity .4s}
.ring::after{content:"";position:absolute;inset:-2px;border-radius:10px;box-shadow:0 0 22px 2px rgba(122,162,255,.5);animation:glow 2.4s ease-in-out infinite}
.ring.done{opacity:0}
@keyframes glow{50%{opacity:.25}}

/* 2. Puzzle */
.progress{margin:16px 20px 0;height:6px;border-radius:3px;background:var(--fill-3);overflow:hidden;display:flex}
.progress span{display:block;height:100%;width:0;border-radius:3px;background:var(--gold);transition:width .6s ease}
.floor-head{display:flex;align-items:center;justify-content:space-between;margin:22px 20px 0}
.floor-label{color:var(--blue-m);font-weight:700;font-size:.9375rem}
.back{display:inline-flex;align-items:center;gap:2px;color:var(--m);font-size:.875rem;padding:6px 0}
.back svg{width:1em;height:1em}
.puzzle{flex:1;min-height:0;overflow-y:auto;padding:6px 20px 0}
.question{font-size:clamp(1.625rem,1.2rem + 2.6vw,2.125rem);font-weight:700;line-height:1.55;text-wrap:balance;margin:6px 0 26px;min-height:3em}
.hint{margin:-14px 0 18px;color:var(--m);font-size:.9375rem}
#answer{width:100%;min-height:58px;padding:0 18px;border-radius:var(--r-lg);background:var(--fill);border:2px solid var(--line-2);font-size:1.1875rem;text-align:start}
#answer::placeholder{color:#6F7699}
#answer:focus{outline:none;border-color:var(--blue)}
.spell{margin-top:10px;color:var(--m);font-size:.8125rem}
.feedback{min-height:1.6em;margin-top:8px;font-size:.9375rem;color:var(--bad)}
.feedback.ok{color:var(--ok)}
.solved-note{margin-top:4px;color:var(--gold);font-weight:700}
.puzzle.shake{animation:shake .42s cubic-bezier(.36,.07,.19,.97)}
.puzzle.win #answer{border-color:var(--ok)}
@keyframes shake{10%,90%{transform:translateX(-2px)}20%,80%{transform:translateX(4px)}30%,50%,70%{transform:translateX(-7px)}40%,60%{transform:translateX(7px)}}

/* Summit */
.summit{flex:1;display:grid;align-content:center;justify-items:center;gap:10px;text-align:center;padding:16px 20px}
.summit-mark{width:116px;height:116px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:6px;background:radial-gradient(circle,rgba(255,207,107,.25),transparent 70%)}
.summit-mark svg{width:72px;height:72px;fill:var(--gold);stroke:#FFE7A6;stroke-width:1.5;filter:drop-shadow(0 0 16px rgba(255,207,107,.55))}
.summit h2{font-size:clamp(1.875rem,1.4rem + 3vw,2.5rem);line-height:1.3}
.summit-sub{font-size:1.25rem;color:var(--gold);font-weight:700}
.summit-stat{color:var(--m)}

/* 3. Leaderboard */
.board-scroll{flex:1;min-height:0;overflow-y:auto;padding:16px 20px 0}
.tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--fill);border-radius:14px;padding:5px;margin-bottom:12px}
.tabs button{min-height:44px;border-radius:10px;color:#A9B3D6;font-weight:700;font-size:1rem}
.tabs button[aria-selected="true"]{background:var(--blue);color:var(--on-blue)}
.mock-tag{font-size:.75rem;color:#FFD48A;text-align:center;margin:-4px 0 10px}
.tab-panel{min-height:120px;padding-bottom:8px}
.rows{list-style:none;display:grid;gap:10px}
.rows li{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--fill-2);border:1px solid var(--line)}
.rows li.me{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue) inset}
.rank{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9375rem;background:var(--rank);color:#fff;font-variant-numeric:tabular-nums}
.rows li:nth-child(1) .rank{background:var(--gold);color:var(--on-gold)}
.rows li:nth-child(2) .rank{background:var(--silver);color:#1A2040}
.rows li:nth-child(3) .rank{background:var(--bronze);color:#2A1300}
.who{min-width:0}
.who b{display:block;font-size:1.0625rem;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.who small{color:var(--m);font-size:.8125rem}
.score{text-align:end;font-weight:700;color:var(--gold);white-space:nowrap}
.score small{display:block;color:var(--m);font-weight:400;font-size:.75rem}
.empty{color:var(--m);text-align:center;padding:24px 0}

.join{display:grid;gap:6px;margin-bottom:14px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--fill-2)}
.join-h{font-weight:700;margin-bottom:2px}
.join label{font-size:.8125rem;color:var(--m)}
.join input{width:100%;min-height:48px;padding:0 14px;border-radius:var(--r);background:var(--fill);border:2px solid var(--line-2);font-size:1rem}
.join input:focus{outline:none;border-color:var(--blue)}
.join .btn{margin-top:6px}
.join-err{min-height:1.4em;color:var(--bad);font-size:.875rem}
.join-note{color:var(--m);font-size:.75rem;text-align:center}
.combo{position:relative}
#town-list{list-style:none;position:absolute;inset-inline:0;top:calc(100% + 4px);max-height:220px;overflow-y:auto;background:#0C1236;border:1px solid var(--line-2);border-radius:var(--r);z-index:2;padding:4px}
#town-list li{padding:10px 12px;border-radius:8px;cursor:pointer;display:flex;justify-content:space-between;gap:8px}
#town-list li small{color:var(--m)}
#town-list li:hover{background:var(--fill-2)}

/* Share sheet */
.sheet{margin:auto auto 0;width:100%;max-width:520px;max-height:92dvh;border:1px solid var(--line);border-bottom:0;border-radius:22px 22px 0 0;
  background:#0C1236;color:var(--t);padding:16px 20px calc(16px + env(safe-area-inset-bottom));overflow-y:auto}
.sheet::backdrop{background:rgba(3,5,14,.75)}
.sheet[open]{animation:sheet .28s ease-out}
@keyframes sheet{from{transform:translateY(40px);opacity:0}}
.sheet-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.sheet-head h2{font-size:1.25rem;flex:1}
.icon-btn{width:44px;height:44px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--fill);border:1px solid var(--line);font-size:1.75rem;line-height:1}
.share-preview{display:flex;justify-content:center;margin-bottom:14px}
.share-preview img{width:auto;max-width:100%;height:auto;max-height:52dvh;aspect-ratio:9/16;border-radius:var(--r);background:var(--fill)}
.sheet-actions{display:grid;gap:10px}

.enter{animation:enter .35s ease-out both}
@keyframes enter{from{opacity:0;transform:translateY(12px)}}
.nojs{padding:24px;text-align:center}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}
@media (min-height:780px){:root{--floor-h:42px;--gap:10px}}