/* ─── JLPT EXAM UI ─── */
:root {
  --bg:      #0f0e17;
  --surface: #1a1825;
  --card:    #1e1c2e;
  --card2:   #261f38;
  --border:  #2a2740;
  --accent:  #e8c547;
  --accent2: #ff6b6b;
  --accent3: #7ec8e3;
  --text:    #e8e6f0;
  --muted:   #6b6882;
  --green:   #4ade80;
  --red:     #f87171;
  --amber:   #f59e0b;
  --n1: #ef4444; --n2: #f97316; --n3: #f59e0b; --n4: #60a5fa; --n5: #4ade80;
}
*{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;}
body{font-family:'Noto Sans JP',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden;}

.screen{display:flex;flex-direction:column;min-height:100vh;}
.hidden{display:none!important;}

/* ════════════════════════════════════════
   PICKER SCREEN
════════════════════════════════════════ */
.picker-header{
  padding:24px 20px 16px;
  display:flex;align-items:center;gap:14px;
  border-bottom:1px solid var(--border);
}
.back-btn{
  background:none;border:1.5px solid var(--border);color:var(--muted);
  width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:17px;
  display:flex;align-items:center;justify-content:center;transition:all .15s;flex-shrink:0;
  text-decoration:none;
}
.back-btn:hover{border-color:var(--accent);color:var(--accent);}
.picker-header-text h1{font-size:18px;font-weight:700;font-family:'Noto Serif JP',serif;}
.picker-header-text p{font-size:11px;color:var(--muted);margin-top:2px;font-family:'Space Mono',monospace;}

.picker-body{padding:20px;flex:1;max-width:680px;margin:0 auto;width:100%;}

.level-tabs{display:flex;gap:8px;margin-bottom:20px;}
.level-tab{
  flex:1;padding:10px 6px;border-radius:12px;border:1.5px solid var(--border);
  background:var(--surface);color:var(--muted);font-size:13px;font-weight:700;
  cursor:pointer;transition:all .15s;font-family:'Space Mono',monospace;
}
.level-tab.active{border-color:var(--accent);color:var(--accent);background:rgba(232,197,71,.08);}
.level-tab[data-lv="N1"].active{border-color:var(--n1);color:var(--n1);background:rgba(239,68,68,.08);}
.level-tab[data-lv="N2"].active{border-color:var(--n2);color:var(--n2);background:rgba(249,115,22,.08);}
.level-tab[data-lv="N3"].active{border-color:var(--n3);color:var(--n3);background:rgba(245,158,11,.08);}
.level-tab[data-lv="N4"].active{border-color:var(--n4);color:var(--n4);background:rgba(96,165,250,.08);}
.level-tab[data-lv="N5"].active{border-color:var(--n5);color:var(--n5);background:rgba(74,222,128,.08);}

.exam-list{display:flex;flex-direction:column;gap:8px;}
.exam-card{
  display:flex;align-items:center;gap:12px;padding:14px 16px;
  background:var(--surface);border:1.5px solid var(--border);border-radius:14px;
  cursor:pointer;transition:all .15s;
}
.exam-card:hover{border-color:rgba(232,197,71,.3);background:var(--card);}
.exam-card-done{border-color:rgba(74,222,128,.2);background:rgba(74,222,128,.03);}
.exam-card-icon{font-size:22px;flex-shrink:0;}
.exam-card-body{flex:1;min-width:0;}
.exam-card-title{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.exam-card-meta{font-size:11px;color:var(--muted);margin-top:3px;font-family:'Space Mono',monospace;}
.exam-card-score{font-family:'Space Mono',monospace;font-size:12px;font-weight:700;flex-shrink:0;color:var(--green);}
.lv-badge{
  font-size:10px;font-weight:700;padding:3px 9px;border-radius:100px;
  font-family:'Space Mono',monospace;flex-shrink:0;
}
.lv-n1{background:rgba(239,68,68,.15);color:var(--n1);}
.lv-n2{background:rgba(249,115,22,.15);color:var(--n2);}
.lv-n3{background:rgba(245,158,11,.15);color:var(--n3);}
.lv-n4{background:rgba(96,165,250,.15);color:var(--n4);}
.lv-n5{background:rgba(74,222,128,.15);color:var(--n5);}

.picker-loading{text-align:center;color:var(--muted);padding:48px 20px;font-size:14px;}

/* ════════════════════════════════════════
   EXAM SCREEN — TOP BAR
════════════════════════════════════════ */
.exam-bar{
  display:flex;align-items:center;gap:10px;padding:10px 14px;
  background:var(--surface);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;flex-shrink:0;
}
.exam-bar-info{flex:1;min-width:0;}
.exam-bar-title{font-size:13px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.exam-bar-meta{font-size:10px;color:var(--muted);font-family:'Space Mono',monospace;margin-top:1px;}

.timer{
  font-family:'Space Mono',monospace;font-size:15px;font-weight:700;
  color:var(--accent);background:rgba(232,197,71,.1);
  border:1px solid rgba(232,197,71,.25);padding:6px 11px;border-radius:8px;flex-shrink:0;
}
.timer.warn{color:var(--red);background:rgba(248,113,113,.1);border-color:rgba(248,113,113,.3);animation:pulse 1s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.6;}}

.submit-btn{
  padding:7px 14px;border-radius:8px;background:var(--accent);color:var(--bg);
  font-weight:700;font-size:12px;cursor:pointer;border:none;flex-shrink:0;
  font-family:'Noto Sans JP',sans-serif;transition:all .15s;
}
.submit-btn:hover{opacity:.9;}
.submit-btn:active{transform:scale(.97);}

/* Section pill tabs */
.section-tabs{
  display:flex;gap:6px;padding:10px 14px;background:var(--surface);
  border-bottom:1px solid var(--border);overflow-x:auto;flex-shrink:0;
  -webkit-overflow-scrolling:touch;
}
.sec-tab{
  padding:5px 14px;border-radius:100px;border:1.5px solid var(--border);
  background:transparent;color:var(--muted);font-size:11px;font-weight:700;
  cursor:pointer;transition:all .15s;white-space:nowrap;flex-shrink:0;
  font-family:'Noto Sans JP',sans-serif;
}
.sec-tab.active{border-color:var(--accent);color:var(--accent);background:rgba(232,197,71,.08);}
.sec-tab .answered-pill{
  display:inline-block;margin-left:5px;font-size:9px;
  background:rgba(74,222,128,.2);color:var(--green);
  border-radius:100px;padding:1px 6px;font-family:'Space Mono',monospace;
}

/* Mobile view-toggle */
.view-toggle{
  display:none;flex-shrink:0;
}
.view-btn{
  padding:5px 12px;border-radius:8px;border:1.5px solid var(--border);
  background:transparent;color:var(--muted);font-size:11px;cursor:pointer;
  font-family:'Noto Sans JP',sans-serif;transition:all .15s;
}
.view-btn.active{border-color:var(--accent);color:var(--accent);background:rgba(232,197,71,.08);}

/* ════════════════════════════════════════
   EXAM SCREEN — BODY (2-panel)
════════════════════════════════════════ */
.exam-body{display:flex;flex:1;overflow:hidden;}

/* LEFT: exam content */
.content-panel{
  flex:1;overflow-y:auto;min-width:0;
  /* Custom scrollbar */
  scrollbar-width:thin;scrollbar-color:var(--border) transparent;
}
.content-panel::-webkit-scrollbar{width:4px;}
.content-panel::-webkit-scrollbar-track{background:transparent;}
.content-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px;}

.section-content{padding:20px 24px 80px;}

/* CKEditor HTML overrides — make it look clean */
.jlpt-html{
  font-size:14px;line-height:2;color:var(--text);
  font-family:'Noto Serif JP',serif;
}
.jlpt-html p{margin-bottom:10px;}
.jlpt-html strong{font-weight:700;}
.jlpt-html u{text-decoration:underline;color:var(--accent3);}
.jlpt-html br{line-height:1;}
/* Problem heading */
.jlpt-html p:has(strong:first-child){
  background:rgba(232,197,71,.05);border-left:3px solid var(--accent);
  padding:8px 12px;border-radius:0 8px 8px 0;margin-bottom:14px;
  font-size:12px;font-family:'Noto Sans JP',sans-serif;
}
/* Question numbers */
.jlpt-html>p[data-q]{
  display:flex;gap:8px;align-items:baseline;
  padding:8px 0 4px;border-bottom:1px solid rgba(255,255,255,.04);
}
/* Replace CKEditor todo-list with clean numbered choices */
.jlpt-html ul.todo-list{
  list-style:none;display:flex;flex-direction:column;gap:5px;
  margin:6px 0 16px 16px;
}
.jlpt-html ul.todo-list li{
  display:none; /* hidden — choices shown in answer sheet */
}
/* Iframes (listening audio) */
.jlpt-html iframe{
  width:100%;max-width:640px;border-radius:8px;
  border:1px solid var(--border);margin:10px 0;display:block;
}
.jlpt-html .raw-html-embed{margin:8px 0;}
/* Hide checkbox inputs */
.jlpt-html input[type=checkbox]{display:none;}
.jlpt-html label{cursor:default;}
/* Figure images */
.jlpt-html figure{margin:10px 0;}
.jlpt-html figure img{max-width:100%;border-radius:6px;}
.jlpt-html table{border-collapse:collapse;margin:8px 0;font-size:13px;}
.jlpt-html td,
.jlpt-html th{border:1px solid var(--border);padding:6px 10px;}

/* Question number highlighted */
.q-anchor{
  display:flex;align-items:baseline;gap:6px;
  padding:4px 0;margin-bottom:4px;
}
.q-num-badge{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  background:var(--card2);border:1px solid var(--border);
  border-radius:4px;padding:2px 6px;flex-shrink:0;color:var(--muted);
  cursor:pointer;transition:all .1s;
}
.q-num-badge.answered{background:rgba(74,222,128,.15);border-color:rgba(74,222,128,.4);color:var(--green);}

/* RIGHT: answer sheet */
.sheet-panel{
  width:280px;flex-shrink:0;overflow-y:auto;
  background:var(--surface);border-left:1px solid var(--border);
  scrollbar-width:thin;scrollbar-color:var(--border) transparent;
}
.sheet-panel::-webkit-scrollbar{width:3px;}
.sheet-panel::-webkit-scrollbar-thumb{background:var(--border);}

.sheet-inner{padding:14px 12px 80px;}
.sheet-section{margin-bottom:14px;}
.sheet-section-title{
  font-size:10px;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:.5px;
  font-family:'Space Mono',monospace;margin-bottom:8px;
  padding-bottom:5px;border-bottom:1px solid var(--border);
}
.sheet-row{
  display:flex;align-items:center;gap:5px;
  padding:3px 0;border-radius:6px;cursor:pointer;transition:background .1s;
}
.sheet-row:hover{background:rgba(255,255,255,.03);}
.sheet-row.current-q{background:rgba(232,197,71,.07);}
.sheet-q-num{
  font-family:'Space Mono',monospace;font-size:10px;color:var(--muted);
  min-width:20px;text-align:right;flex-shrink:0;
}
.sheet-choices{display:flex;gap:3px;}
.choice-btn{
  width:26px;height:26px;border-radius:50%;
  border:1.5px solid var(--border);background:var(--card);
  color:var(--muted);font-size:10px;font-weight:700;
  cursor:pointer;transition:all .12s;
  display:flex;align-items:center;justify-content:center;
  font-family:'Space Mono',monospace;flex-shrink:0;
}
.choice-btn:hover{border-color:var(--accent);color:var(--accent);}
.choice-btn.sel{border-color:var(--accent);background:rgba(232,197,71,.18);color:var(--accent);}
.choice-btn.right{border-color:var(--green);background:rgba(74,222,128,.18);color:var(--green);}
.choice-btn.wrong{border-color:var(--red);background:rgba(248,113,113,.18);color:var(--red);}
.choice-btn.reveal{border-color:rgba(74,222,128,.4);background:rgba(74,222,128,.06);}

/* Progress bar under section tabs */
.progress-bar-wrap{height:3px;background:var(--border);flex-shrink:0;}
.progress-bar-fill{height:100%;background:var(--accent);transition:width .3s ease;}

/* ════════════════════════════════════════
   RESULT SCREEN
════════════════════════════════════════ */
.result-wrap{
  flex:1;padding:28px 20px 60px;
  max-width:600px;margin:0 auto;width:100%;
  overflow-y:auto;
}
.result-hero{text-align:center;margin-bottom:28px;}
.result-hero-emoji{font-size:60px;display:block;margin-bottom:10px;}
.result-hero-title{font-size:24px;font-weight:700;font-family:'Noto Serif JP',serif;margin-bottom:4px;}
.result-hero-sub{font-size:12px;color:var(--muted);font-family:'Space Mono',monospace;}

.pass-badge{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:12px;font-size:14px;font-weight:700;margin-bottom:24px;
}
.pass-badge.pass{background:rgba(74,222,128,.1);border:1.5px solid rgba(74,222,128,.3);color:var(--green);}
.pass-badge.fail{background:rgba(248,113,113,.1);border:1.5px solid rgba(248,113,113,.3);color:var(--red);}

.result-sections{display:flex;flex-direction:column;gap:10px;margin-bottom:24px;}
.result-sec{
  background:var(--surface);border:1.5px solid var(--border);border-radius:14px;padding:16px;
}
.result-sec-name{font-size:12px;font-weight:700;color:var(--muted);margin-bottom:10px;}
.result-sec-row{display:flex;align-items:center;gap:10px;}
.result-sec-score{
  font-family:'Space Mono',monospace;font-size:22px;font-weight:700;min-width:44px;
}
.result-sec-bar-wrap{flex:1;}
.result-sec-bar{height:8px;background:var(--border);border-radius:100px;overflow:hidden;margin-bottom:4px;}
.result-sec-bar-fill{height:100%;border-radius:100px;transition:width .6s ease;}
.result-sec-detail{font-size:10px;color:var(--muted);font-family:'Space Mono',monospace;}

.result-total{
  background:var(--card2);border:1.5px solid var(--border);border-radius:14px;padding:16px;
  text-align:center;margin-bottom:24px;
}
.result-total-score{font-family:'Space Mono',monospace;font-size:36px;font-weight:700;color:var(--accent);}
.result-total-max{font-size:13px;color:var(--muted);}

.result-actions{display:flex;gap:10px;flex-wrap:wrap;}
.result-btn{
  flex:1;padding:12px;border-radius:12px;font-size:13px;font-weight:700;
  cursor:pointer;border:1.5px solid var(--border);background:var(--surface);
  color:var(--text);font-family:'Noto Sans JP',sans-serif;transition:all .15s;
  min-width:120px;
}
.result-btn:hover{transform:scale(.98);}
.result-btn.primary{background:var(--accent);color:var(--bg);border-color:var(--accent);}

/* ════════════════════════════════════════
   MOBILE ≤ 640px
════════════════════════════════════════ */
@media (max-width:640px){
  .view-toggle{display:flex;gap:4px;}
  .sheet-panel{
    position:fixed;bottom:0;left:0;right:0;
    width:100%;height:55vh;
    border-left:none;border-top:1px solid var(--border);
    border-radius:20px 20px 0 0;
    transform:translateY(100%);transition:transform .3s ease;
    z-index:90;
  }
  .sheet-panel.open{transform:translateY(0);}
  .content-panel{overflow-y:auto;}
  .section-tabs{gap:4px;}
  .sec-tab{font-size:10px;padding:4px 10px;}
  .exam-bar-title{font-size:12px;}
}