:root {
  --navy-950:#031126;
  --navy-900:#071a36;
  --navy-800:#0b2a50;
  --navy-700:#103b69;
  --cyan-500:#19c4c9;
  --cyan-400:#45e2df;
  --gold-500:#e9a82d;
  --gold-400:#ffd36b;
  --cream:#fff8e8;
  --white:#ffffff;
  --muted:#b8c9da;
  --success:#3ddc97;
  --danger:#ff6f78;
  --warning:#ffcb5c;
  --glass:rgba(9,34,67,.72);
  --glass-strong:rgba(5,21,44,.93);
  --line:rgba(94,231,226,.22);
  --shadow:0 24px 70px rgba(0,0,0,.35);
  --radius-xl:28px;
  --radius-lg:20px;
  --radius-md:14px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  color:var(--white);
  background:
    radial-gradient(circle at 20% 10%, rgba(25,196,201,.14), transparent 28%),
    radial-gradient(circle at 90% 20%, rgba(233,168,45,.12), transparent 25%),
    linear-gradient(160deg,var(--navy-950),var(--navy-900) 48%,#05182e);
  font-family:"Segoe UI",Tahoma,Arial,sans-serif;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.18;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:34px 34px;
  mask-image:linear-gradient(to bottom,black,transparent 88%);
}
button,input,select{font:inherit}
button{cursor:pointer}
a{color:inherit}
img{max-width:100%;display:block}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.app-shell{min-height:100vh}
.page{width:min(1180px,calc(100% - 28px));margin:0 auto;padding:20px 0 42px}
.topbar{
  position:sticky;top:10px;z-index:30;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 14px;margin-bottom:18px;
  border:1px solid var(--line);border-radius:20px;
  background:rgba(3,17,38,.74);backdrop-filter:blur(18px);
  box-shadow:0 14px 40px rgba(0,0,0,.22)
}
.brand-mini{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mini img{width:50px;height:50px;object-fit:contain}
.brand-title{font-weight:900;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-sub{font-size:.78rem;color:var(--muted)}
.top-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.icon-btn,.pill-btn{
  border:1px solid rgba(94,231,226,.25);color:var(--white);
  background:rgba(12,48,84,.72);border-radius:999px;
  padding:9px 13px;transition:.2s ease
}
.icon-btn:hover,.pill-btn:hover{transform:translateY(-1px);border-color:rgba(255,211,107,.6);background:rgba(18,61,103,.9)}
.icon-btn{width:42px;height:42px;padding:0;display:grid;place-items:center}

.gate-screen{
  min-height:100vh;display:grid;place-items:center;padding:24px;position:relative;overflow:hidden
}
.gate-screen::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(3,17,38,.96) 0%,rgba(3,17,38,.82) 45%,rgba(3,17,38,.32) 100%),url('cover.png') center/cover no-repeat;
  filter:saturate(.96)
}
.gate-card{
  position:relative;z-index:2;width:min(560px,100%);margin-inline-end:auto;
  background:linear-gradient(160deg,rgba(7,26,54,.95),rgba(4,19,41,.9));
  border:1px solid rgba(94,231,226,.32);border-radius:32px;padding:30px;
  box-shadow:var(--shadow);backdrop-filter:blur(12px)
}
.gate-logo{width:180px;margin:0 auto 14px;filter:drop-shadow(0 10px 22px rgba(0,0,0,.3))}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(25,196,201,.12);border:1px solid rgba(69,226,223,.25);color:var(--cyan-400);font-size:.85rem;font-weight:800}
.gate-card h1{margin:18px 0 8px;font-size:clamp(2rem,7vw,3.8rem);line-height:1.05;letter-spacing:-.04em}
.gold-text{background:linear-gradient(90deg,#fff1b2,var(--gold-500),#ffe79a);-webkit-background-clip:text;background-clip:text;color:transparent}
.gate-card p{color:#d5e0eb;line-height:1.85;margin:0 0 20px}
.access-box{padding:16px;border-radius:18px;background:rgba(4,18,39,.66);border:1px solid rgba(255,255,255,.08)}
.input-row{display:flex;gap:10px;margin-top:10px}
.text-input{
  width:100%;border:1px solid rgba(94,231,226,.25);background:rgba(255,255,255,.06);color:#fff;
  border-radius:14px;padding:14px 15px;outline:none;transition:.2s
}
.text-input:focus{border-color:var(--cyan-400);box-shadow:0 0 0 4px rgba(25,196,201,.12)}
.text-input::placeholder{color:#8fa4b9}
.primary-btn,.secondary-btn,.danger-btn{
  border:0;border-radius:14px;padding:13px 18px;font-weight:900;transition:.2s ease;display:inline-flex;align-items:center;justify-content:center;gap:9px
}
.primary-btn{background:linear-gradient(135deg,var(--gold-400),var(--gold-500));color:#13213a;box-shadow:0 10px 24px rgba(233,168,45,.25)}
.primary-btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(233,168,45,.35)}
.secondary-btn{background:linear-gradient(135deg,var(--cyan-400),var(--cyan-500));color:#04203b}
.danger-btn{background:rgba(255,111,120,.15);color:#ffd7da;border:1px solid rgba(255,111,120,.35)}
.btn-wide{width:100%}
.error-text{min-height:22px;margin-top:8px;color:#ffb7bc;font-size:.9rem}
.demo-note{margin-top:12px;padding:10px 12px;border-radius:12px;background:rgba(255,211,107,.08);color:#ffe3a0;font-size:.8rem;line-height:1.6}

.setup-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:stretch}
.panel{
  background:linear-gradient(160deg,rgba(10,40,76,.78),rgba(5,22,47,.86));
  border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);overflow:hidden
}
.panel-pad{padding:24px}
.cover-panel{min-height:560px;position:relative;background:url('cover.png') center/cover no-repeat}
.cover-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(3,17,38,.92),transparent 45%)}
.cover-caption{position:absolute;z-index:2;inset:auto 20px 20px;display:flex;gap:10px;flex-wrap:wrap}
.badge{padding:8px 11px;border-radius:999px;background:rgba(3,17,38,.74);border:1px solid rgba(255,255,255,.15);font-size:.82rem}
.form-group{margin:0 0 18px}
.form-group label{display:block;margin-bottom:8px;font-weight:800}
.segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.segmented button{border:1px solid rgba(255,255,255,.11);background:rgba(255,255,255,.05);color:#fff;padding:12px;border-radius:13px}
.segmented button.active{border-color:var(--cyan-400);background:rgba(25,196,201,.16);box-shadow:inset 0 0 0 1px rgba(25,196,201,.18)}
.avatar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.avatar-option{aspect-ratio:1;border-radius:18px;border:1px solid rgba(255,255,255,.1);background:linear-gradient(145deg,rgba(25,196,201,.12),rgba(233,168,45,.08));display:grid;place-items:center;font-size:2.2rem;transition:.2s}
.avatar-option.active{transform:translateY(-2px);border-color:var(--gold-400);box-shadow:0 0 0 3px rgba(255,211,107,.11)}

.hero-dashboard{display:grid;grid-template-columns:1.35fr .65fr;gap:18px;margin-bottom:18px}
.welcome-card{padding:24px;position:relative;overflow:hidden;min-height:250px}
.welcome-card::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,22,47,.96),rgba(5,22,47,.74),rgba(5,22,47,.15)),url('cover.png') center/cover no-repeat;opacity:.94}
.welcome-content{position:relative;z-index:2;max-width:700px}
.welcome-title{font-size:clamp(1.7rem,4vw,3rem);margin:8px 0 10px;line-height:1.15}
.welcome-text{color:#d9e6f1;line-height:1.8;max-width:620px}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.stat-card{padding:18px;text-align:center;min-height:119px;display:grid;align-content:center}
.stat-number{font-size:1.8rem;font-weight:1000;color:var(--gold-400)}
.stat-label{font-size:.84rem;color:var(--muted);margin-top:4px}

.section-heading{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:26px 2px 14px}
.section-heading h2{margin:0;font-size:1.45rem}
.section-heading p{margin:4px 0 0;color:var(--muted);font-size:.9rem}
.progress-bar{height:10px;background:rgba(255,255,255,.08);border-radius:999px;overflow:hidden}
.progress-fill{height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--cyan-500),var(--gold-400));transition:width .5s ease}

.world-map{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.zone-card{position:relative;min-height:260px;padding:20px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;isolation:isolate;transition:.22s ease}
.zone-card:hover{transform:translateY(-4px);border-color:rgba(255,211,107,.45)}
.zone-card::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,var(--zoneGlow,rgba(25,196,201,.22)),transparent 38%);z-index:-1}
.zone-card.locked{filter:saturate(.45);opacity:.62}
.zone-card.complete{border-color:rgba(61,220,151,.42)}
.zone-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.zone-number{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);font-size:1.3rem;font-weight:1000}
.zone-icon{font-size:2.4rem;filter:drop-shadow(0 8px 16px rgba(0,0,0,.3))}
.zone-card h3{margin:16px 0 8px;font-size:1.3rem}
.zone-card p{margin:0;color:#c9d8e6;line-height:1.7;font-size:.9rem}
.zone-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:18px}
.zone-stars{color:var(--gold-400);letter-spacing:2px}
.zone-btn{padding:10px 13px;border-radius:12px;border:1px solid rgba(94,231,226,.22);background:rgba(7,33,67,.72);color:#fff;font-weight:800}
.zone-card:not(.locked) .zone-btn:hover{background:rgba(25,196,201,.18)}

.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.quick-card{padding:18px;min-height:155px;display:flex;flex-direction:column;justify-content:space-between}
.quick-icon{font-size:2rem}
.quick-card h3{margin:10px 0 6px}
.quick-card p{margin:0;color:var(--muted);font-size:.88rem;line-height:1.6}

.modal-backdrop{position:fixed;inset:0;z-index:100;background:rgba(0,8,20,.78);backdrop-filter:blur(10px);display:grid;place-items:center;padding:18px}
.modal{width:min(780px,100%);max-height:calc(100vh - 36px);overflow:auto;background:linear-gradient(160deg,#0b2a50,#06172e);border:1px solid rgba(94,231,226,.28);border-radius:28px;box-shadow:0 30px 90px rgba(0,0,0,.55)}
.modal-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:20px 22px;border-bottom:1px solid rgba(255,255,255,.08)}
.modal-head h2{margin:0}
.modal-body{padding:22px}
.close-btn{border:0;background:rgba(255,255,255,.08);color:#fff;width:40px;height:40px;border-radius:12px;font-size:1.2rem}

.game-page{min-height:100vh;padding-bottom:30px}
.game-wrap{width:min(900px,calc(100% - 24px));margin:0 auto}
.game-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 0}
.game-progress{flex:1;max-width:480px}
.game-meta{display:flex;gap:8px;align-items:center}
.meta-chip{padding:8px 11px;border:1px solid rgba(255,255,255,.1);border-radius:999px;background:rgba(7,26,54,.72);font-size:.85rem;white-space:nowrap}
.question-card{padding:26px;margin-top:12px;min-height:520px;display:flex;flex-direction:column;justify-content:center;text-align:center;position:relative;overflow:hidden}
.question-card::before{content:"";position:absolute;inset:-120px;background:radial-gradient(circle,rgba(25,196,201,.14),transparent 55%);pointer-events:none}
.question-content{position:relative;z-index:2}
.question-kicker{color:var(--cyan-400);font-weight:900;margin-bottom:12px}
.question-prompt{font-size:clamp(1.55rem,5vw,2.5rem);line-height:1.45;margin:0 auto 22px;max-width:720px}
.math-display{display:flex;flex-direction:row;align-items:center;justify-content:center;gap:clamp(.28em,2vw,.5em);font-size:clamp(2.8rem,10vw,5.5rem);font-weight:1000;direction:ltr;unicode-bidi:isolate;margin:10px 0 24px;color:var(--cream);text-shadow:0 8px 30px rgba(233,168,45,.18);white-space:nowrap;text-align:center;font-variant-numeric:tabular-nums}
.math-inline{display:inline-flex;flex-direction:row;align-items:baseline;gap:.22em;direction:ltr;unicode-bidi:isolate;white-space:nowrap;font-variant-numeric:tabular-nums}
.math-token{display:inline-block;direction:ltr;unicode-bidi:isolate;flex:0 0 auto}
.math-missing{color:var(--cream)}
.answer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:620px;margin:0 auto}
.answer-btn{min-height:74px;border-radius:18px;border:1px solid rgba(94,231,226,.22);background:rgba(255,255,255,.055);color:#fff;font-size:1.35rem;font-weight:900;transition:.2s}
.answer-btn:hover{transform:translateY(-2px);border-color:var(--cyan-400);background:rgba(25,196,201,.12)}
.answer-btn.correct{background:rgba(61,220,151,.18);border-color:var(--success);color:#d9ffef}
.answer-btn.wrong{background:rgba(255,111,120,.16);border-color:var(--danger);color:#ffe0e2}
.answer-entry{display:flex;justify-content:center;gap:10px;max-width:480px;margin:0 auto}
.answer-entry input{text-align:center;font-size:1.5rem;font-weight:900;direction:ltr}
.feedback-box{max-width:650px;margin:18px auto 0;padding:16px;border-radius:16px;line-height:1.8;text-align:right}
.feedback-box.good{background:rgba(61,220,151,.12);border:1px solid rgba(61,220,151,.32)}
.feedback-box.bad{background:rgba(255,111,120,.1);border:1px solid rgba(255,111,120,.28)}
.hint-visual{display:flex;justify-content:center;flex-wrap:wrap;gap:7px;margin-top:12px;direction:ltr}
.hint-dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--gold-400),var(--gold-500));box-shadow:0 0 12px rgba(255,211,107,.35)}
.game-footer{display:flex;justify-content:space-between;gap:12px;margin-top:14px}

.result-card{text-align:center;padding:30px}
.result-emoji{font-size:4rem}
.result-card h1{font-size:clamp(2rem,6vw,3.6rem);margin:10px 0}
.result-score{font-size:2.8rem;font-weight:1000;color:var(--gold-400)}
.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0}
.result-stat{padding:16px;background:rgba(255,255,255,.05);border-radius:16px;border:1px solid rgba(255,255,255,.08)}
.result-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}

.report-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.report-card{padding:18px}
.report-card h3{margin-top:0}
.table-bars{display:grid;gap:10px}
.table-row{display:grid;grid-template-columns:70px 1fr 54px;align-items:center;gap:10px}
.table-row .progress-bar{height:9px}
.weak-list{display:flex;gap:8px;flex-wrap:wrap}
.weak-chip{padding:9px 12px;border-radius:12px;background:rgba(255,111,120,.1);border:1px solid rgba(255,111,120,.22)}
.achievement-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.achievement{padding:14px;text-align:center;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.04);border-radius:16px;opacity:.42}
.achievement.unlocked{opacity:1;border-color:rgba(255,211,107,.36);background:rgba(255,211,107,.08)}
.achievement-icon{font-size:2rem}

.footer-note{text-align:center;color:#8ca2b7;font-size:.8rem;margin:28px 0 0;line-height:1.7}

.toast{position:fixed;z-index:200;left:18px;bottom:18px;max-width:min(420px,calc(100% - 36px));padding:13px 16px;border-radius:14px;background:#0c2d54;border:1px solid rgba(94,231,226,.35);box-shadow:0 16px 40px rgba(0,0,0,.35);animation:toastIn .25s ease}
@keyframes toastIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@keyframes pop{0%{transform:scale(.94);opacity:.2}100%{transform:scale(1);opacity:1}}
.pop{animation:pop .25s ease}

@media(max-width:920px){
  .setup-grid,.hero-dashboard{grid-template-columns:1fr}
  .cover-panel{min-height:390px}
  .world-map{grid-template-columns:repeat(2,1fr)}
  .quick-grid{grid-template-columns:1fr}
}
@media(max-width:620px){
  .page{width:min(100% - 18px,1180px);padding-top:8px}
  .topbar{top:6px;border-radius:16px;padding:8px 10px}
  .brand-mini img{width:40px;height:40px}
  .brand-sub{display:none}
  .pill-btn{padding:8px 10px;font-size:.82rem}
  .gate-screen{padding:12px;align-items:end}
  .gate-screen::before{background:linear-gradient(0deg,rgba(3,17,38,.98) 0%,rgba(3,17,38,.74) 58%,rgba(3,17,38,.15) 100%),url('cover.png') center/cover no-repeat}
  .gate-card{padding:20px;border-radius:24px;margin:0}
  .gate-logo{width:130px}
  .input-row{flex-direction:column}
  .segmented{grid-template-columns:1fr}
  .avatar-grid{grid-template-columns:repeat(4,1fr)}
  .world-map{grid-template-columns:1fr}
  .zone-card{min-height:230px}
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .stat-card{min-height:92px;padding:10px}
  .stat-number{font-size:1.35rem}
  .stat-label{font-size:.72rem}
  .answer-grid{grid-template-columns:1fr}
  .question-card{min-height:500px;padding:18px}
  .game-header{align-items:flex-start;flex-wrap:wrap}
  .game-progress{order:3;max-width:none;width:100%}
  .game-footer{flex-direction:column}
  .game-footer button{width:100%}
  .result-grid,.report-grid,.achievement-grid{grid-template-columns:1fr}
  .modal-body{padding:16px}
}

@media print{
  body{background:#fff;color:#111}
  body::before,.topbar,.no-print,.footer-note{display:none!important}
  .page{width:100%;padding:0}
  .panel{box-shadow:none;border:1px solid #ddd;background:#fff;color:#111}
  .report-card{break-inside:avoid}
  .progress-bar{background:#eee}
}