/* Matematik Köşesi — uzaysal/matematiksel tema (Tam Sayı İşlem Ustası; ortak oyun kabuğu oyun.css ile birlikte yüklenir) */
:root{
  --tahta-1:#05031a; --tahta-2:#120a3a; --tahta-cerceve:#6a4de0; --tahta-cerceve-2:#4a2fae;
  --tebesir-beyaz:#eef1ff; --tebesir-sari:#7ef0ff; --tebesir-mavi:#aab6ff;
  --kirmizi:#ff4d7a; --yesil-vurgu:#5cf2a6; --turuncu:#c77dff;
  --golge: 0 0 26px rgba(120,90,255,.25), 0 10px 30px rgba(0,0,0,.5);
  --radius:16px;
  font-size:16px;
}
*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0; min-height:100vh; color:var(--tebesir-beyaz);
  font-family:'Space Mono','Segoe UI',system-ui,monospace;
  background:
    radial-gradient(1.6px 1.6px at 12% 18%, rgba(255,255,255,.9) 0, transparent 60%),
    radial-gradient(1.2px 1.2px at 28% 64%, rgba(255,255,255,.7) 0, transparent 60%),
    radial-gradient(1.8px 1.8px at 46% 32%, rgba(255,255,255,.85) 0, transparent 60%),
    radial-gradient(1.2px 1.2px at 63% 78%, rgba(255,255,255,.6) 0, transparent 60%),
    radial-gradient(1.6px 1.6px at 78% 22%, rgba(255,255,255,.8) 0, transparent 60%),
    radial-gradient(1.2px 1.2px at 85% 55%, rgba(255,255,255,.65) 0, transparent 60%),
    radial-gradient(1.4px 1.4px at 92% 85%, rgba(255,255,255,.7) 0, transparent 60%),
    radial-gradient(1.2px 1.2px at 8% 88%, rgba(255,255,255,.55) 0, transparent 60%),
    radial-gradient(1.6px 1.6px at 36% 92%, rgba(255,255,255,.6) 0, transparent 60%),
    radial-gradient(ellipse 60% 40% at 22% 10%, rgba(140,90,255,.3), transparent 60%),
    radial-gradient(ellipse 55% 45% at 82% 75%, rgba(70,200,255,.2), transparent 60%),
    radial-gradient(ellipse 50% 40% at 70% 15%, rgba(255,90,200,.12), transparent 60%),
    linear-gradient(160deg, var(--tahta-2), var(--tahta-1));
  background-attachment:fixed;
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent;
  overflow-x:hidden;
}
button{font-family:inherit;}


#app{position:relative;max-width:900px;margin:0 auto;padding:12px 12px 90px;min-height:calc(100vh - 120px);}

.icon-btn{
  border:2px solid rgba(255,255,255,.35); background:rgba(255,255,255,.08); color:var(--tebesir-beyaz);
  border-radius:50%; width:44px; height:44px; font-size:18px; cursor:pointer; display:flex; align-items:center; justify-content:center;
}
#muteBtn{position:fixed; top:68px; right:14px; z-index:40;}

.screen{display:none;}
.screen.active{display:block; animation:belir .35s ease both;}
@keyframes belir{from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:none;}}

/* ---------- Başlangıç ekranı ---------- */
.hero{text-align:center; padding:40px 12px 10px; max-width:640px; margin:0 auto;}
.hero-badge{
  display:inline-block; padding:4px 14px; border-radius:999px; background:rgba(126,240,255,.12);
  color:var(--tebesir-sari); border:1px solid rgba(126,240,255,.4); font-size:.85rem; margin-bottom:10px;
}
.title{
  font-size:2.2rem; margin:.2em 0; letter-spacing:.02em;
  text-shadow:0 0 18px rgba(126,240,255,.5), 0 2px 0 rgba(0,0,0,.3);
  font-family:'Orbitron','Segoe UI',sans-serif; font-weight:900;
}
.lead{color:var(--tebesir-mavi); line-height:1.5; margin:0 0 20px;}

/* ---- Mod seçim ekranı ---- */
.mode-grid{ display:grid; grid-template-columns:repeat(3, 1fr); gap:14px; margin:0 0 20px; }
.mode-card{
  display:flex; flex-direction:column; align-items:center; gap:6px; text-align:center;
  background:rgba(0,0,0,.2); border:2px solid rgba(255,255,255,.25); border-radius:16px;
  padding:20px 14px; cursor:pointer; color:var(--tebesir-beyaz); box-shadow:var(--golge);
  transition:transform .12s ease, border-color .12s ease, background .12s ease;
}
.mode-card:hover, .mode-card:focus-visible{ border-color:var(--tebesir-sari); background:rgba(126,240,255,.08); transform:translateY(-3px); }
.mode-card:active{ transform:translateY(0) scale(.97); }
.mode-icon{ font-size:2rem; line-height:1; }
.mode-title{ font-weight:800; font-size:1.05rem; color:var(--tebesir-sari); font-family:'Orbitron','Segoe UI',sans-serif; }
.mode-desc{ font-size:.82rem; color:var(--tebesir-mavi); line-height:1.35; }
@media (max-width:640px){
  .mode-grid{ grid-template-columns:1fr; }
  .mode-card{ flex-direction:row; text-align:left; padding:14px 16px; }
  .mode-icon{ font-size:1.6rem; }
}

.btn-row{display:flex; gap:10px; flex-wrap:wrap; justify-content:center;}
.btn{
  border:none; border-radius:12px; padding:14px 20px; font-size:1rem; font-weight:700; cursor:pointer;
  box-shadow:var(--golge); transition:transform .12s ease;
}
.btn:active{transform:scale(.96);}
.btn-primary{background:linear-gradient(180deg,#8ff4ff,#3fa9ff); color:#06182e;}
.btn-glass{background:rgba(255,255,255,.1); color:var(--tebesir-beyaz); border:1px solid rgba(255,255,255,.3);}
.btn-danger{background:linear-gradient(180deg,#ff8a8a,#e14b4b); color:#3a0505; text-decoration:none; display:inline-block;}
.note{color:var(--tebesir-sari); font-size:.9rem; min-height:1.2em;}

/* ---------- HUD ---------- */
.hud{
  display:flex; align-items:center; gap:10px; background:rgba(0,0,0,.25); border-radius:14px; padding:8px 10px;
  border:1px solid rgba(255,255,255,.12);
}
.hud-cell{display:flex; flex-direction:column; align-items:center; min-width:70px;}
.hud-cell .lbl{font-size:.7rem; color:var(--tebesir-mavi); opacity:.8;}
.hud-cell b{font-size:1.15rem;}
.hud-lives{flex-direction:row; gap:4px; min-width:auto;}
.heart{font-size:1.3rem; filter:drop-shadow(0 2px 0 rgba(0,0,0,.3));}
.heart.lost{opacity:.25; filter:grayscale(1);}
.hud-mod{flex:1;}
.hud-mod .lbl{font-size:.95rem; color:var(--tebesir-sari); font-weight:700;}
.hud-score b{color:var(--tebesir-sari);}
.hud-pause{margin-left:auto;}

.progress{height:6px; border-radius:4px; overflow:hidden; background:rgba(255,255,255,.1); margin:8px 0 14px;}
.progress i{display:block; height:100%; width:100%; background:linear-gradient(90deg,#5cf2a6,#7ef0ff); transform-origin:left; transition:width .2s linear;}

/* ---------- Tahta / oyun alanı ---------- */
.board{
  background:rgba(0,0,0,.18); border:3px solid var(--tahta-cerceve); border-radius:var(--radius);
  box-shadow:inset 0 0 40px rgba(0,0,0,.35), var(--golge); padding:16px; min-height:320px; position:relative;
}
.prompt{
  text-align:center; font-size:4.3rem; font-weight:700; margin-bottom:14px; color:var(--tebesir-beyaz);
  text-shadow:0 0 14px rgba(126,240,255,.35), 0 2px 2px rgba(0,0,0,.3);
}
.stage{position:relative; min-height:0;}
.controls{display:flex; flex-wrap:wrap; gap:10px; justify-content:center; margin-top:14px;}

/* ---- Sayma pulları (+ / −) ---- */
.chip-tray{display:flex; flex-wrap:wrap; gap:8px; justify-content:center; min-height:70px; align-content:flex-start; padding:10px; border:2px dashed rgba(255,255,255,.25); border-radius:12px;}
/* Gruplar (sıfır çifti / çarpma-bölme grupları) burada satır satır birikir — üst üste dizilince dikdörtgen bir ızgara oluşur. */
.chip-groups{display:flex; flex-direction:column; gap:8px; align-items:center; margin-top:12px; padding:10px; border:2px dashed rgba(255,233,168,.35); border-radius:12px; min-height:60px;}
.chip-row{display:flex; gap:8px; justify-content:center; padding:6px; border:2px solid rgba(255,233,168,.55); border-radius:10px; background:rgba(255,233,168,.06); transition:transform .15s ease, opacity .25s ease;}
.chip-row.selectable-group{cursor:pointer;}
.chip-row.selected{outline:3px solid var(--tebesir-sari); transform:scale(1.03);}
.chip-row.flying{animation:disari-at-row .6s ease forwards;}
@keyframes disari-at-row{to{transform:translateY(-160px) scale(.5) rotate(12deg); opacity:0;}}
.chip{
  width:44px; height:44px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:1.5rem; line-height:1; cursor:grab; user-select:none; touch-action:none;
  box-shadow:0 3px 0 rgba(0,0,0,.35), inset 0 2px 4px rgba(255,255,255,.3);
  transition:transform .15s ease, opacity .25s ease;
}
.chip.plus{background:radial-gradient(circle at 35% 30%,#fff,#bfe3ff); color:#0b3d6e; border:2px solid #0b3d6e;}
.chip.minus{background:radial-gradient(circle at 35% 30%,#fff,#ffd3d3); color:#6e0b0b; border:2px solid #6e0b0b;}
.chip.selected{outline:3px solid var(--tebesir-sari); transform:scale(1.08);}
.chip.flying{animation:disari-at .6s ease forwards;}
@keyframes disari-at{to{transform:translateY(-140px) scale(.3) rotate(25deg); opacity:0;}}

.chip-actions{display:flex; gap:8px; justify-content:center; flex-wrap:wrap; margin-top:10px;}
.chip-btn{
  background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.3); color:var(--tebesir-beyaz);
  border-radius:10px; padding:10px 14px; font-weight:700; cursor:pointer;
}
.chip-btn.danger{background:rgba(255,160,160,.18); border-color:#ffb3b3;}

/* ---- Bonus şans sandıkları ---- */
.bonus-stage{text-align:center; padding:20px 10px;}
.bonus-tag{background:var(--turuncu); color:#3a1d00; padding:2px 10px; border-radius:999px; font-weight:800; margin-right:8px;}
.chests{display:flex; justify-content:center; gap:20px; margin-top:20px; flex-wrap:wrap;}
.chest{
  font-size:3.2rem; cursor:pointer; background:none; border:none; filter:drop-shadow(0 6px 10px rgba(0,0,0,.4));
  transition:transform .5s ease; padding:10px;
}
.chest.swap{animation:sandik-oynat 1.4s ease;}
@keyframes sandik-oynat{0%,100%{transform:translateX(0);}25%{transform:translateX(40px);}50%{transform:translateX(-40px);}75%{transform:translateX(20px);}}
.chest.opened{transform:scale(1.2) rotate(-4deg);}
.chest:disabled{opacity:.4; cursor:default;}

/* ---- Sayı doğrusu (DOM tabanlı, dokunmatik dostu) ---- */
.numberline-wrap{position:relative; height:170px; margin:14px 0 8px; touch-action:none; cursor:pointer;}
.nl-line{position:absolute; left:0; right:0; top:50%; height:4px; background:var(--tebesir-beyaz); opacity:.55; border-radius:2px;}
.nl-ticks{position:absolute; inset:0;}
.nl-tick{
  position:absolute; top:calc(50% - 10px); width:2px; height:20px; background:var(--tebesir-mavi); opacity:.6;
  border:none; padding:0; transform:translateX(-50%); cursor:pointer; appearance:none; pointer-events:none;
}
.nl-tick.chosen{background:var(--yesil-vurgu); opacity:1; width:4px; height:26px; top:calc(50% - 13px);}
.nl-ticklabel{position:absolute; top:calc(50% + 14px); transform:translateX(-50%); font-size:.7rem; color:var(--tebesir-mavi); pointer-events:none;}
.nl-start{
  position:absolute; top:calc(50% - 7px); width:14px; height:14px; border-radius:50%;
  background:var(--tebesir-beyaz); border:2px solid var(--tahta-1); transform:translateX(-50%); z-index:1; pointer-events:none;
}
.nl-handle{
  position:absolute; top:calc(50% - 12px); transform:translateX(-50%); width:26px; height:26px; border-radius:50%;
  background:var(--tebesir-sari); display:flex; align-items:center; justify-content:center; color:#3a2a05;
  touch-action:none; box-shadow:var(--golge); z-index:2; font-size:.8rem; pointer-events:none; display:none;
}
.nl-handle.show{display:flex;}
.nl-arrow{position:absolute; top:calc(50% - 2px); height:4px; background:var(--tebesir-sari); border-radius:2px; pointer-events:none;}
.nl-arrow.minus{background:var(--kirmizi);}
.nl-result{text-align:center; margin-top:6px; font-size:1.15rem; font-weight:800; color:var(--tebesir-sari); min-height:1.6em;}

/* ---------- Banner / fx ---------- */
.banner{
  position:fixed; left:50%; top:18%; transform:translateX(-50%); z-index:60; background:rgba(0,0,0,.75);
  color:var(--tebesir-sari); padding:14px 26px; border-radius:14px; font-size:1.2rem; font-weight:800;
  box-shadow:var(--golge); animation:banner-in .25s ease both;
}
@keyframes banner-in{from{opacity:0; transform:translateX(-50%) translateY(-10px);} to{opacity:1; transform:translateX(-50%);}}
#fx{position:fixed; inset:0; pointer-events:none; z-index:55;}

/* ---------- Oyun sonu ---------- */
.end-card{max-width:520px; margin:40px auto; text-align:center; background:rgba(0,0,0,.2); border-radius:var(--radius); padding:24px; border:1px solid rgba(255,255,255,.15);}
.end-stars{font-size:2rem; margin-bottom:6px;}
.stats{display:grid; grid-template-columns:repeat(4,1fr); gap:8px; margin:16px 0;}
.stats div{background:rgba(255,255,255,.08); border-radius:10px; padding:8px 4px;}
.stats span{display:block; font-size:.75rem; color:var(--tebesir-mavi);}
.stats b{font-size:1.1rem;}
.rank{color:var(--tebesir-sari); font-weight:700;}

/* ---------- Modallar ---------- */
.modal{position:fixed; inset:0; background:rgba(0,0,0,.6); z-index:70; display:flex; align-items:center; justify-content:center; padding:16px;}
.modal[hidden]{display:none;}
.modal-card{background:#140c42; border:2px solid var(--tahta-cerceve); border-radius:16px; padding:20px; max-width:420px; width:100%; box-shadow:var(--golge);}
.modal-card.wide{max-width:560px;}
.modal-card.small{max-width:340px; text-align:center;}
.rules{text-align:left; line-height:1.5; padding-left:18px;}

/* ---------- Responsive ---------- */
@media (max-width:560px){
  .title{font-size:1.6rem;}
  .hud-cell{min-width:56px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .board{padding:10px; min-height:280px;}
  .chip{width:38px; height:38px; font-size:1.25rem;}
}
@media (min-width:1100px){
  #app{max-width:1000px;}
}

/* ---- İşlem Ustası: ifade ekranı + tuş takımı ---- */
.expr-display{
  text-align:center; font-size:1.7rem; font-weight:800; letter-spacing:.02em;
  padding:18px 10px; margin-bottom:10px; color:var(--tebesir-beyaz);
  background:rgba(0,0,0,.18); border:2px dashed rgba(255,255,255,.25); border-radius:14px;
  min-height:70px; display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:4px;
}
.answer-box{
  text-align:center; font-size:2rem; font-weight:800; color:var(--tebesir-sari);
  background:rgba(0,0,0,.25); border:2px solid rgba(126,240,255,.4); border-radius:12px;
  padding:10px; min-height:52px; margin-bottom:12px; letter-spacing:.05em;
  text-shadow:0 0 12px rgba(126,240,255,.5);
}
.answer-box.empty{ color:rgba(126,240,255,.4); text-shadow:none; }
.answer-box.shake{ animation:ans-shake .4s ease; }
@keyframes ans-shake{
  0%,100%{transform:translateX(0);} 20%{transform:translateX(-8px);} 40%{transform:translateX(8px);}
  60%{transform:translateX(-6px);} 80%{transform:translateX(6px);}
}
.keypad{ display:grid; grid-template-columns:repeat(3, 1fr); gap:12px; width:100%; max-width:340px; margin:0 auto; justify-items:stretch; }
.key-btn{
  box-sizing:border-box; width:100%; aspect-ratio:1 / 1; min-height:0;
  display:flex; align-items:center; justify-content:center; line-height:1;
  font-size:4.3rem; font-weight:800; padding:0; margin:0; border-radius:16px; cursor:pointer;
  background:linear-gradient(180deg, rgba(255,255,255,.14), rgba(255,255,255,.05));
  border:2px solid rgba(255,255,255,.3); color:var(--tebesir-beyaz);
  box-shadow:0 4px 0 rgba(0,0,0,.35), inset 0 1px 2px rgba(255,255,255,.25);
  transition:transform .08s ease, box-shadow .08s ease;
}
.key-btn:active{ transform:translateY(2px) scale(.96); box-shadow:0 1px 0 rgba(0,0,0,.35); }
.key-btn.key-sign{ background:linear-gradient(180deg, rgba(255,160,160,.3), rgba(255,160,160,.1)); border-color:#ffb3b3; }
.key-btn.key-back{ background:linear-gradient(180deg, rgba(255,184,107,.32), rgba(255,184,107,.1)); border-color:var(--turuncu); font-size:1.2rem; }
.key-btn.key-ok{
  grid-column:1 / -1; aspect-ratio:auto; padding:14px 0; border-radius:14px;
  background:linear-gradient(180deg,#6effb0,#1fae73); color:#04210f; border:none; font-size:1.15rem;
  box-shadow:0 4px 0 rgba(0,40,10,.45);
}
.key-btn:disabled{ opacity:.4; cursor:default; }
@media (max-width:480px){
  .keypad{ max-width:280px; gap:8px; }
  .key-btn{ font-size:3.8rem; }
  .prompt{ font-size:3.8rem; }
}
@media (max-width:480px) and (max-height:760px){
  .keypad{ max-width:210px; gap:6px; }
  .key-btn{ font-size:3.1rem; border-radius:12px; }
  .key-btn.key-ok{ padding:9px 0; font-size:1.1rem; }
  .board{ padding:8px; min-height:0; }
  .prompt{ font-size:3.1rem; margin-bottom:6px; }
  .answer-box{ padding:6px; min-height:36px; margin-bottom:6px; font-size:1.6rem; }
}

/* ---- Hareketli matematik temalı arka plan ---- */
#mathBg{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  opacity:.5;
}
#app{ position:relative; z-index:1; }

/* ---- Maskot karakterler ---- */
.mascot{
  width:64px; height:64px; flex:0 0 auto; border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #fff, var(--mascot-bg,#bfe3ff));
  border:3px solid var(--mascot-border,#0b3d6e); box-shadow:var(--golge);
  display:flex; align-items:center; justify-content:center; overflow:hidden;
}
.mascot svg{ width:100%; height:100%; display:block; }

/* ---- Doğru cevap: karakter balonu (toast, kendi kendine kapanır) ---- */
.char-toast{
  position:fixed; left:50%; top:16%; transform:translateX(-50%); z-index:62;
  display:flex; align-items:center; gap:12px; max-width:min(90vw,440px);
  background:rgba(14,8,46,.92); border:2px solid rgba(126,240,255,.5); border-radius:16px;
  padding:10px 16px 10px 10px; box-shadow:var(--golge); animation:banner-in .25s ease both;
}
.char-toast .bubble{ font-weight:700; color:var(--tebesir-beyaz); line-height:1.3; }
.char-toast .bubble b{ color:var(--tebesir-sari); display:block; font-size:.78rem; margin-bottom:2px; }

/* ---- Yanlış cevap: zorunlu, detaylı açıklama ekranı ---- */
.explain-overlay{
  position:fixed; inset:0; z-index:80; background:rgba(0,0,0,.72);
  display:flex; align-items:center; justify-content:center; padding:16px;
}
.explain-overlay[hidden]{ display:none; }
.explain-card{
  max-width:560px; width:100%; background:#140c42; border:2px solid var(--tahta-cerceve);
  border-radius:18px; padding:20px; box-shadow:var(--golge); max-height:88vh; overflow:auto;
}
.explain-head{ display:flex; align-items:center; gap:12px; margin-bottom:12px; }
.explain-head b{ display:block; color:var(--kirmizi); font-size:1.05rem; }
.explain-head span{ color:var(--tebesir-mavi); font-size:.85rem; }
.explain-bubble{
  position:relative; background:rgba(255,255,255,.07); border:1px solid rgba(255,255,255,.18);
  border-radius:14px; padding:14px 16px; margin-bottom:14px; line-height:1.55; color:var(--tebesir-beyaz);
}
.explain-bubble .step{ margin:4px 0; }
.explain-bubble .step b{ color:var(--tebesir-sari); }
.explain-bubble .final{ margin-top:8px; font-weight:800; color:var(--yesil-vurgu); }
.explain-overlay .btn{ width:100%; }

/* Oyun sonu: misafir ad kutusu (ortak liderlik, lb.css) */
.end-name{width:min(100%,420px);margin:6px auto 4px}
.end-name[hidden]{display:none}
.modal-card.wide .mklb{margin-top:4px}

/* Telefon: ses düğmesi oyun sırasında HUD'ın yanına oturur (ortak başlık gizlidir), tuş takımı ekrana sığar */
@media (max-width:640px){
  body.oyun-oynaniyor #muteBtn{top:10px; right:8px; width:38px; height:38px; font-size:16px;}
  body.oyun-oynaniyor .hud{margin-right:46px;}
}
@media (max-width:480px){
  .hud{padding:6px 8px; gap:6px;}
  .hud-mod .lbl{font-size:.72rem;}
  .hud-mod b{font-size:.95rem;}
  .hud-cell{min-width:48px;}
  .progress{margin:6px 0 8px;}
  .board{padding:8px;}
  .prompt{font-size:2.2rem; line-height:1.15; margin-bottom:8px; overflow-wrap:anywhere;}
  .answer-box{font-size:1.5rem; padding:6px; min-height:38px; margin-bottom:8px;}
  .controls{margin-top:8px;}
  .keypad{max-width:210px; gap:6px;}
  .key-btn{font-size:2.3rem; border-radius:12px;}
  .key-btn.key-back,.key-btn.key-sign{font-size:1.5rem;}
  .key-btn.key-ok{padding:9px 0; font-size:1.05rem;}
}
/* Masaüstü/tablet (yüksekliği az ekranlar): tuş takımı kaydırmadan sığsın */
@media (min-width:481px) and (max-height:920px){
  .prompt{font-size:3.2rem; margin-bottom:8px;}
  .keypad{max-width:236px; gap:8px;}
  .key-btn{font-size:2.8rem; border-radius:12px;}
  .key-btn.key-back,.key-btn.key-sign{font-size:1.5rem;}
  .key-btn.key-ok{padding:10px 0;}
  .answer-box{font-size:1.7rem; min-height:44px; margin-bottom:8px;}
  .board{min-height:0; padding:12px;}
}