/* ============================================================
   KidsLearn — สไตล์ชีตหลัก (ธีมสดใสสำหรับเด็ก)
   ============================================================ */
:root{
  --pink:#FF8FB1; --orange:#FFC36B; --green:#7ED0B2; --blue:#6FA8FF;
  --purple:#B084FF; --red:#FF7A6B; --ink:#3A3358; --ink-soft:#6B6587;
  --bg1:#FFF6FB; --bg2:#EAF3FF; --card:#FFFFFF; --line:#ECE6F5;
  --shadow:0 10px 30px rgba(80,60,120,.12);
  --radius:22px; --c:var(--blue);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Sarabun',system-ui,sans-serif;
  color:var(--ink);
  min-height:100vh;
  background:
    radial-gradient(1200px 600px at 10% -10%, #FFE6F1 0%, transparent 60%),
    radial-gradient(1000px 600px at 110% 10%, #E2EEFF 0%, transparent 55%),
    linear-gradient(160deg,var(--bg1),var(--bg2));
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.logo-text,.big-title,.result-title{font-family:'Baloo 2',cursive}
#app{max-width:980px;margin:0 auto;padding:22px 16px 90px}
a{color:var(--blue);cursor:pointer;text-decoration:none;font-weight:700}
.muted{color:var(--ink-soft)} .small{font-size:.85rem} .center{text-align:center}

/* ---------- ปุ่ม ---------- */
.btn{
  font-family:'Baloo 2',cursive;font-size:1.05rem;font-weight:700;
  border:none;border-radius:16px;padding:13px 22px;cursor:pointer;
  background:#fff;color:var(--ink);box-shadow:var(--shadow);
  transition:transform .12s ease, box-shadow .12s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:linear-gradient(135deg,var(--blue),var(--purple));color:#fff}
.btn.ghost{background:rgba(255,255,255,.7);color:var(--ink)}
.btn.danger{background:#FF6B6B;color:#fff}
.btn.block{width:100%}
.btn.small{font-size:.95rem;padding:9px 16px;border-radius:13px}
.btn.tiny{font-size:.8rem;padding:5px 12px;border-radius:10px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- ช่องกรอก ---------- */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px;flex:1 1 180px}
.field>span{font-size:.9rem;font-weight:700;color:var(--ink-soft)}
.input{
  font-family:'Sarabun',sans-serif;font-size:1rem;padding:12px 14px;
  border:2px solid var(--line);border-radius:14px;background:#fff;color:var(--ink);
  outline:none;transition:border-color .15s;width:100%;
}
.input:focus{border-color:var(--blue)}
.input.num{max-width:120px;text-align:center;font-weight:700}
.input.color{padding:4px;height:46px}
.row{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end}
.checkfield{display:flex;align-items:center;gap:8px;margin:8px 0;font-weight:700;color:var(--ink-soft)}

/* ================= หน้าเข้าสู่ระบบ ================= */
.login-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;gap:18px}
.logo{text-align:center}
.logo-mark{font-size:3.6rem;filter:drop-shadow(0 6px 10px rgba(0,0,0,.12))}
.logo-text{font-size:2.8rem;margin:.1em 0;background:linear-gradient(135deg,var(--pink),var(--purple),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}
.logo-sub{margin:0;color:var(--ink-soft);font-weight:600}
.auth-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;width:100%;max-width:380px}
.auth-form{display:flex;flex-direction:column}
.form-err{color:#E0463E;font-weight:700;min-height:22px;font-size:.92rem;margin-bottom:6px}
.switch{text-align:center;color:var(--ink-soft);margin:14px 0 0}
.hint{background:rgba(255,255,255,.7);border-radius:14px;padding:10px 16px;font-size:.85rem;color:var(--ink-soft);text-align:center}
.hint code{background:#fff;border:1px solid var(--line);border-radius:8px;padding:2px 8px;font-weight:700;color:var(--ink)}

/* ================= หน้าเลือกสาย ================= */
.welcome{font-weight:700;color:var(--ink-soft);margin-bottom:4px}
.big-title{font-size:2rem;margin:.2em 0}
.subtitle{color:var(--ink-soft);margin:.2em 0 1.4em}
.track-grid{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.track-card{
  --c:var(--blue);background:#fff;border:3px solid transparent;border-radius:26px;
  padding:28px 26px;width:230px;cursor:pointer;box-shadow:var(--shadow);
  transition:transform .14s, border-color .14s;
}
.track-card:hover{transform:translateY(-6px) scale(1.02);border-color:var(--c)}
.track-emoji{font-size:3.4rem}
.track-name{font-family:'Baloo 2';font-size:1.5rem;color:var(--c);margin-top:6px}
.track-desc{color:var(--ink-soft);font-weight:600;margin-top:4px}

/* ================= แถบสถานะผู้เรียน ================= */
.statbar{display:flex;justify-content:space-between;align-items:center;background:#fff;border-radius:20px;padding:12px 18px;box-shadow:var(--shadow);margin-bottom:18px;flex-wrap:wrap;gap:10px}
.who{display:flex;align-items:center;gap:12px}
.avatar{font-size:2rem;background:#F4EEFF;border-radius:50%;width:48px;height:48px;display:grid;place-items:center}
.who-name{font-family:'Baloo 2';font-size:1.2rem}
.who-track{color:var(--ink-soft);font-size:.85rem;font-weight:600}
.stat{display:flex;gap:10px}
.stat-item{background:#FFF7E6;border-radius:12px;padding:8px 14px;font-weight:800;font-family:'Baloo 2';color:#C77A12}
.stat-item:last-child{background:#EAF1FF;color:#3D6BD0}

/* ================= แผนที่ด่าน ================= */
.map-tip{text-align:center;color:var(--ink-soft);font-weight:600;margin:-6px 0 14px}
.grade-section{--c:var(--blue);background:#fff;border-radius:22px;box-shadow:var(--shadow);padding:18px;margin-bottom:18px;border-left:8px solid var(--c)}
.grade-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.grade-emoji{font-size:2.4rem}
.grade-name{font-family:'Baloo 2';font-size:1.35rem;color:var(--c)}
.grade-desc{color:var(--ink-soft);font-weight:600;font-size:.9rem}
.level-list{display:flex;gap:14px;flex-wrap:wrap}
.level-card{
  background:#FBFAFF;border:2px solid var(--line);border-radius:18px;padding:16px;
  width:200px;cursor:pointer;text-align:center;transition:transform .12s, border-color .12s;
}
.level-card:hover:not(.locked){transform:translateY(-4px);border-color:var(--c)}
.level-card.locked{opacity:.55;cursor:not-allowed;filter:grayscale(.4)}
.level-icon{font-size:1.8rem}
.level-name{font-weight:700;margin:6px 0 8px;font-size:.95rem;min-height:2.4em;display:flex;align-items:center;justify-content:center}
.replay-hint{margin-top:6px;font-size:.78rem;font-weight:700;color:#C77A12;background:#FFF7E6;border-radius:10px;padding:3px 8px;display:inline-block}
.map-foot{display:flex;gap:12px;justify-content:center;margin-top:8px;flex-wrap:wrap}

/* ดาว */
.stars{display:inline-flex;gap:3px;font-size:1.2rem;line-height:1}
.star.on{color:#FFB72B} .star.off{color:#D9D3E6}

/* ================= เล่นด่าน ================= */
.play{--c:var(--blue)}
.play-top{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.progress{flex:1;height:16px;background:#EDE8F6;border-radius:20px;overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--c),var(--purple));border-radius:20px;transition:width .3s}
.qcount{font-family:'Baloo 2';font-weight:700;color:var(--ink-soft)}

.question{background:#fff;border-radius:26px;box-shadow:var(--shadow);padding:34px 22px;text-align:center;margin-bottom:24px}
.pic-row{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.pic-group{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;max-width:280px;background:#FBF7FF;border-radius:16px;padding:12px}
.emoji{font-size:2.2rem;line-height:1}
.num-row{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.num{font-family:'Baloo 2';font-size:3.4rem;color:var(--ink)}
.op{font-family:'Baloo 2';font-size:2.6rem;color:var(--purple)}
.qmark{font-family:'Baloo 2';font-size:3.4rem;color:var(--pink)}

.choices{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.choice-btn{
  font-family:'Baloo 2';font-size:2.2rem;font-weight:800;width:96px;height:96px;
  border:3px solid var(--line);border-radius:24px;background:#fff;color:var(--ink);
  cursor:pointer;box-shadow:var(--shadow);transition:transform .1s, border-color .1s;
}
.choice-btn:hover:not(:disabled){transform:translateY(-4px);border-color:var(--blue)}
.choice-btn.right{background:#D9F8E5;border-color:#46C97E;color:#1E8F4E;animation:pop .3s}
.choice-btn.wrong{background:#FFE2DE;border-color:#FF7A6B;color:#D8453A}
@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.12)}100%{transform:scale(1)}}

.keypad-area{max-width:340px;margin:0 auto}
.answer-display{
  background:#fff;border:3px dashed var(--line);border-radius:18px;min-height:64px;
  font-family:'Baloo 2';font-size:2.4rem;text-align:center;line-height:64px;margin-bottom:14px;color:var(--ink)
}
.answer-display.right{border-color:#46C97E;background:#D9F8E5;color:#1E8F4E}
.answer-display.wrong{border-color:#FF7A6B;background:#FFE2DE;color:#D8453A;font-size:1.6rem}
.keypad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.key{
  font-family:'Baloo 2';font-size:1.6rem;font-weight:700;padding:16px;border:none;
  border-radius:16px;background:#fff;color:var(--ink);box-shadow:var(--shadow);cursor:pointer;transition:transform .1s
}
.key:hover{transform:translateY(-2px)}
.key.ok{background:linear-gradient(135deg,var(--green),#4FB58E);color:#fff;font-size:1.2rem}
.key.wide{background:#FFE9E6;color:#D8453A}

.feedback{text-align:center;font-family:'Baloo 2';font-size:1.5rem;margin-top:20px;animation:pop .3s}
.feedback.good{color:#1E8F4E} .feedback.bad{color:#D8453A}

/* ================= จบด่าน ================= */
.complete{min-height:80vh;display:flex;align-items:center;justify-content:center}
.result-card{background:#fff;border-radius:30px;box-shadow:var(--shadow);padding:36px;max-width:440px;text-align:center}
.result-emoji{font-size:4rem;animation:bounce 1s infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.result-title{font-size:2rem;margin:.2em 0}
.result-stars .stars{font-size:2.8rem;gap:8px}
.result-msg{color:var(--ink-soft);font-weight:600;font-size:1.1rem}
.result-score{display:flex;justify-content:center;gap:18px;margin:16px 0;font-family:'Baloo 2';font-size:1.2rem;color:var(--purple)}
.result-actions{display:flex;flex-direction:column;gap:10px;margin-top:18px}

/* ================= แผงผู้ดูแล ================= */
.admin-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:10px}
.admin-title{font-family:'Baloo 2';font-size:1.5rem}
.tabbar{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}
.tab{font-family:'Baloo 2';font-size:1rem;font-weight:700;border:none;background:rgba(255,255,255,.6);color:var(--ink-soft);padding:10px 18px;border-radius:14px;cursor:pointer}
.tab.active{background:#fff;color:var(--ink);box-shadow:var(--shadow)}
.card{background:#fff;border-radius:20px;box-shadow:var(--shadow);padding:20px;margin-bottom:18px}
.card h3{margin:0 0 14px}
.add-prob{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.preview{font-family:'Baloo 2';font-size:1.3rem;color:var(--purple);min-width:60px}
.prob-list{display:flex;flex-direction:column;gap:8px}
.prob-item{display:flex;justify-content:space-between;align-items:center;background:#FBFAFF;border:1px solid var(--line);border-radius:12px;padding:10px 14px;font-family:'Baloo 2';font-size:1.1rem}
.gen-box{display:flex;gap:12px;flex-wrap:wrap;margin:8px 0;padding:14px;background:#FBFAFF;border-radius:14px}

.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line)}
.table th{font-family:'Baloo 2';color:var(--ink-soft);font-size:.9rem}
.table td.center,.table th.center{text-align:center}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(58,51,88,.45);display:grid;place-items:center;z-index:50;padding:16px;animation:fade .2s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{background:#fff;border-radius:24px;box-shadow:var(--shadow);padding:26px;max-width:480px;width:100%;max-height:90vh;overflow:auto}
.modal h2{margin:0 0 16px;font-size:1.4rem}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}

/* ================= เอฟเฟกต์ ================= */
.confetti-layer{position:fixed;inset:0;pointer-events:none;z-index:60;overflow:hidden}
.confetti-piece{position:absolute;top:-20px;width:11px;height:16px;border-radius:2px;animation:fall 2.4s linear forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(640deg);opacity:.9}}
.toast{position:fixed;bottom:80px;left:50%;transform:transl(-50%,20px);translate:-50% 20px;background:var(--ink);color:#fff;padding:12px 22px;border-radius:30px;font-weight:700;opacity:0;transition:.3s;z-index:70}
.toast.show{opacity:1;translate:-50% 0}
.mute-btn{position:fixed;bottom:18px;right:18px;width:50px;height:50px;border-radius:50%;border:none;background:#fff;box-shadow:var(--shadow);font-size:1.4rem;cursor:pointer;z-index:40}

/* ================= จอเล็ก ================= */
@media (max-width:560px){
  .num{font-size:2.6rem} .qmark{font-size:2.6rem} .op{font-size:2rem}
  .choice-btn{width:78px;height:78px;font-size:1.8rem}
  .track-card{width:100%;max-width:320px}
  .level-card{width:100%}
  .big-title{font-size:1.6rem}
}

/* ============================================================
   ผังเมือง (Town Map) — dashboard ผู้เรียน
   ============================================================ */
.town-bar{display:flex;align-items:center;justify-content:center;gap:14px;margin:8px 0 2px}
.town-nav{font-size:1.3rem;width:46px;height:46px;border:none;border-radius:50%;background:#fff;box-shadow:var(--shadow);cursor:pointer;color:var(--ink);flex:0 0 auto}
.town-nav:disabled{opacity:.3;cursor:not-allowed}
.town-title{display:flex;align-items:center;gap:10px;min-width:210px;justify-content:center}
.town-emoji{font-size:2rem}
.town-name{font-family:'Baloo 2';font-size:1.3rem;line-height:1.1}
.town-sub{color:var(--ink-soft);font-weight:600;font-size:.85rem}

.town-wrap{margin:8px auto;max-width:100%}
.town-wrap.size-0{width:360px}
.town-wrap.size-1{width:450px}
.town-wrap.size-2{width:540px}

.town-scene{position:relative;width:100%;aspect-ratio:7/5}
.town-ground{position:absolute;inset:16px;border-radius:46%;
  background:
    radial-gradient(circle at 50% 54%, #ECD9B0 0 16%, rgba(236,217,176,0) 17%),
    radial-gradient(circle at 50% 45%, #C5E79E, #A6D67F 58%, #93C96D);
  box-shadow:inset 0 0 34px rgba(70,100,40,.28)}
.town-wall{position:absolute;inset:0;border-radius:46%;
  border:14px solid #B0A790;
  box-shadow:inset 0 0 0 3px #948A72, inset 0 0 0 6px #C3BBA6, 0 8px 18px rgba(0,0,0,.18)}
/* หอคอย */
.tower{position:absolute;width:24px;height:24px;background:#9C927B;border:2px solid #7E7256;
  border-radius:5px;transform:translate(-50%,-50%);
  box-shadow:0 3px 6px rgba(0,0,0,.25);z-index:2}
.tower::after{content:'';position:absolute;left:50%;top:-9px;transform:translateX(-50%);
  border-left:9px solid transparent;border-right:9px solid transparent;border-bottom:10px solid #C04A33}
.t-n{left:50%;top:1%}.t-s{left:50%;top:99%}.t-e{left:99%;top:50%}.t-w{left:1%;top:50%}
.t-ne{left:84%;top:14%}.t-nw{left:16%;top:14%}.t-se{left:84%;top:86%}.t-sw{left:16%;top:86%}

.town-center{position:absolute;left:50%;top:55%;transform:translate(-50%,-50%);
  font-size:1.9rem;filter:drop-shadow(0 2px 2px rgba(0,0,0,.25));z-index:1}
.town-decor{position:absolute;transform:translate(-50%,-50%);font-size:1.5rem;
  filter:drop-shadow(0 2px 2px rgba(0,0,0,.22));pointer-events:none;z-index:1}

/* อาคาร = ด่าน */
.building{position:absolute;transform:translate(-50%,-50%);display:flex;flex-direction:column;
  align-items:center;gap:0;background:none;border:none;cursor:pointer;width:84px;padding:0;z-index:3}
.bld-badge{position:absolute;top:-4px;right:8px;font-size:1.05rem;filter:drop-shadow(0 1px 1px rgba(0,0,0,.3))}
.bld-emoji{font-size:2.7rem;line-height:1;filter:drop-shadow(0 4px 4px rgba(0,0,0,.28));transition:transform .12s}
.building:hover:not(:disabled) .bld-emoji{transform:translateY(-6px) scale(1.12)}
.bld-plaque{background:#fff;border-radius:10px;padding:2px 8px;box-shadow:var(--shadow);
  border-top:3px solid var(--c);margin-top:-3px}
.bld-name{font-family:'Baloo 2';font-size:.72rem;color:var(--ink);white-space:nowrap}
.bld-plaque .stars{font-size:.78rem}
.building.locked{cursor:not-allowed}
.building.locked .bld-emoji{filter:grayscale(.55) drop-shadow(0 4px 4px rgba(0,0,0,.2));opacity:.85}
.building.can-improve .bld-emoji{animation:wobble 1.5s ease-in-out infinite}
@keyframes wobble{0%,100%{transform:translateY(0) rotate(0)}25%{transform:translateY(-3px) rotate(-5deg)}75%{transform:translateY(-3px) rotate(5deg)}}

/* จุดเลือกเมือง */
.town-dots{display:flex;gap:8px;justify-content:center;margin:8px 0 2px;flex-wrap:wrap}
.town-dot{width:44px;height:44px;border-radius:14px;border:2px solid var(--line);background:#fff;
  font-size:1.3rem;cursor:pointer;box-shadow:var(--shadow);transition:transform .1s}
.town-dot.active{border-color:var(--blue);transform:scale(1.1)}
.town-dot.locked{opacity:.5;cursor:not-allowed}

@media (max-width:560px){
  .town-wrap.size-0,.town-wrap.size-1,.town-wrap.size-2{width:100%}
  .bld-emoji{font-size:2.1rem} .building{width:66px} .bld-name{font-size:.64rem}
  .town-title{min-width:150px}
}

/* ============================================================
   ปราสาท (boss) — ด่านยากสุดของชั้น เด่นเป็นพิเศษ
   ============================================================ */
.building.boss .bld-emoji{font-size:3.4rem;
  filter:drop-shadow(0 0 9px rgba(255,183,43,.95)) drop-shadow(0 4px 5px rgba(0,0,0,.3));
  animation:bossPulse 1.8s ease-in-out infinite}
.building.boss .bld-plaque{border-top-color:#FFB72B;background:linear-gradient(180deg,#FFF4D6,#fff)}
.building.boss .bld-name{color:#C77A12;font-weight:800}
.building.boss.locked .bld-emoji{animation:none}
@keyframes bossPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.09)}}

/* ============================================================
   รองรับมือถือ/แท็บเล็ต (Responsive) — แตะง่าย ไม่ล้นจอ
   ============================================================ */
html{-webkit-text-size-adjust:100%}
body{overflow-x:hidden}
button{-webkit-tap-highlight-color:transparent}
.btn,.choice-btn,.key,.building,.town-dot,.town-nav,.tab,.track-card,.level-card{
  user-select:none;-webkit-user-select:none;touch-action:manipulation}

@media (max-width:560px){
  #app{padding:14px 10px 96px}
  .statbar{padding:10px 12px}
  .question{padding:24px 14px;border-radius:20px}
  .keypad-area{max-width:300px}
  .key{padding:18px 0;font-size:1.5rem}
  .answer-display{font-size:2rem;line-height:56px;min-height:56px}
  .result-card{padding:24px 18px}
  .modal{padding:18px}
  .auth-card{padding:20px}
  .play-top{gap:8px}
  .btn{padding:12px 18px}
}
@media (max-width:380px){
  .choice-btn{width:68px;height:68px;font-size:1.5rem}
  .num{font-size:2.1rem}.qmark{font-size:2.1rem}.op{font-size:1.6rem}
  .emoji{font-size:1.8rem}
  .bld-emoji{font-size:1.85rem}.building{width:58px}
  .building.boss .bld-emoji{font-size:2.4rem}
  .town-nav{width:40px;height:40px;font-size:1.1rem}
  .town-dot{width:38px;height:38px;font-size:1.05rem}
  .town-title{min-width:120px}
  .town-name{font-size:1.1rem}
  .logo-text{font-size:2.3rem}
}