/* ===== Irodori ভাই · Mock Test Therapy — shared styles ===== */
:root, :root[data-theme="normal"]{
  --bg:#f4f1ec; --bg2:#f4f1ec; --card:#ffffff; --ink:#1f2328; --muted:#6b6f76; --line:#e6e1d8;
  --brand:#c2410c; --brand-soft:#fff1e6; --ok:#15803d; --ok-soft:#e8f6ec; --bad:#b91c1c; --bad-soft:#fdecec;
  --warn:#b45309; --warn-soft:#fef3c7;
  --accent:#2f5d8a; --accent-soft:#eaf1f8; --pt:#8a6d6d; --frame:#f1e4e6;
  --hero:linear-gradient(135deg,#9a3412 0%,#c2410c 45%,#ea580c 100%);
  --hero-ink:#fff; --wm:rgba(31,35,40,.07);
}
:root[data-theme="dark"]{
  --bg:#121417; --bg2:#121417; --card:#1c1f23; --ink:#eceae6; --muted:#a2a6ad; --line:#30343a;
  --brand:#fb923c; --brand-soft:#2a1d14; --ok:#4ade80; --ok-soft:#13291b; --bad:#f87171; --bad-soft:#341818;
  --warn:#fbbf24; --warn-soft:#2e2410;
  --accent:#8bb8e8; --accent-soft:#18242f; --pt:#c4a8a8; --frame:#2b2f35;
  --hero:linear-gradient(135deg,#1c1f23 0%,#2a1d14 60%,#3b2414 100%);
  --hero-ink:#f6ede4; --wm:rgba(236,234,230,.07);
}
:root[data-theme="color"]{
  --bg:#fdf4ff; --bg2:#ecfeff; --card:#ffffff; --ink:#24163a; --muted:#6b5a85; --line:#eadcf7;
  --brand:#db2777; --brand-soft:#fff0f7; --ok:#059669; --ok-soft:#dcfce7; --bad:#e11d48; --bad-soft:#ffe4e6;
  --warn:#d97706; --warn-soft:#fef3c7;
  --accent:#7c3aed; --accent-soft:#f3e8ff; --pt:#c026d3; --frame:#f5d0fe;
  --hero:linear-gradient(120deg,#f43f5e 0%,#f97316 22%,#eab308 42%,#22c55e 60%,#06b6d4 78%,#8b5cf6 100%);
  --hero-ink:#fff; --wm:rgba(124,58,237,.08);
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;min-height:100vh;background:linear-gradient(180deg,var(--bg) 0%,var(--bg2) 100%);background-attachment:fixed;color:var(--ink);font-family:"Hind Siliguri","Noto Sans JP",sans-serif;line-height:1.6;transition:background .3s,color .3s}
a{color:inherit}
.jp{font-family:"Noto Sans JP",sans-serif}
ruby{ruby-align:center}
ruby rt{font-size:.55em;font-family:"Noto Sans JP";color:var(--muted);font-weight:500}
body.nofuri rt{display:none}
.wrap{max-width:860px;margin:0 auto;padding:16px 16px 60px;position:relative}

/* ---------- watermark (5 per page) ---------- */
.wm{position:fixed;inset:0;pointer-events:none;z-index:40;overflow:hidden;user-select:none}
.wm span{position:absolute;white-space:nowrap;font-weight:700;font-size:13px;color:var(--wm);transform:rotate(-18deg);letter-spacing:.02em}
.wm span:nth-child(1){left:6%;top:14%}
.wm span:nth-child(2){right:6%;top:32%}
.wm span:nth-child(3){left:30%;top:52%}
.wm span:nth-child(4){right:10%;top:72%}
.wm span:nth-child(5){left:8%;top:88%}

/* ---------- hero with corner logo ---------- */
.hero{position:relative;overflow:hidden;border-radius:20px;background:var(--hero);color:var(--hero-ink);padding:24px 130px 22px 24px;box-shadow:0 10px 30px -12px rgba(0,0,0,.35)}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.12);pointer-events:none}
.hero::before{width:260px;height:260px;right:-80px;top:-110px}
.hero::after{width:150px;height:150px;right:120px;bottom:-90px}
.hero .bgk{position:absolute;left:46%;bottom:-34px;font-family:"Noto Sans JP";font-weight:900;font-size:150px;line-height:1;opacity:.08;pointer-events:none}
.brandlogo{position:absolute;top:14px;right:14px;width:104px;height:104px;border-radius:50%;background:#fff;box-shadow:0 8px 20px -8px rgba(0,0,0,.5);border:3px solid rgba(255,255,255,.85);overflow:hidden;z-index:2}
.brandlogo img{width:100%;height:100%;display:block;object-fit:cover}
.kicker{position:relative;font-size:13px;letter-spacing:.08em;opacity:.92;font-weight:600}
.hero h1{position:relative;margin:2px 0 0;font-size:clamp(22px,4.8vw,34px);line-height:1.25;font-weight:700}
.hero h1 .hl{display:inline-block;background:rgba(255,255,255,.2);border-radius:8px;padding:0 8px}
.hero p.sub{position:relative;margin:8px 0 0;opacity:.95}
.chips{position:relative;display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:3px 12px;font-size:14px;font-weight:600;backdrop-filter:blur(4px)}
.chip rt{color:inherit;opacity:.85}
@media (max-width:560px){
  .hero{padding:20px 18px 18px;padding-top:86px}
  .brandlogo{width:72px;height:72px;top:10px;right:10px}
}

/* ---------- toolbar ---------- */
.bar{position:sticky;top:0;z-index:5;padding:10px 0;background:var(--bg);display:flex;flex-wrap:wrap;gap:10px;align-items:center}
:root[data-theme="color"] .bar{background:rgba(253,244,255,.92);backdrop-filter:blur(6px)}
.seg{display:flex;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:3px}
.seg button{border:0;background:transparent;color:var(--muted);font:inherit;font-size:14px;font-weight:600;padding:5px 12px;border-radius:999px;cursor:pointer;white-space:nowrap}
.seg button.on{background:var(--brand);color:#fff}
:root[data-theme="dark"] .seg button.on{color:#1c1f23}
:root[data-theme="color"] .seg button.on{background:linear-gradient(90deg,#f43f5e,#8b5cf6)}
.fbtn{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit;font-size:14px;font-weight:600;padding:5px 12px 5px 8px;border-radius:999px;cursor:pointer}
.fbtn .sw{width:34px;height:20px;border-radius:99px;background:var(--line);position:relative;transition:.2s}
.fbtn .sw::after{content:"";position:absolute;left:3px;top:3px;width:14px;height:14px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.fbtn.on .sw{background:var(--ok)}
.fbtn.on .sw::after{left:17px}
.fbtn .jp{font-size:14px}
.score{display:flex;align-items:center;gap:10px;flex:1 1 100%}
.pill{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-weight:600;font-size:14px;white-space:nowrap}
.prog{flex:1;height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.prog i{display:block;height:100%;width:0;background:var(--brand);transition:width .3s}
:root[data-theme="color"] .prog i{background:linear-gradient(90deg,#f43f5e,#f97316,#eab308,#22c55e,#06b6d4,#8b5cf6)}
@media (max-width:480px){
  .bar{gap:8px}
  .seg button{padding:4px 9px;font-size:13px}
  .fbtn{padding:4px 10px 4px 6px;font-size:13px;gap:6px}
}

/* ---------- index pages ---------- */
.sec-title{margin:26px 0 10px;font-size:20px;font-weight:700}
.books{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));margin-top:18px}
.book{display:block;text-decoration:none;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;position:relative;overflow:hidden;transition:transform .15s,box-shadow .15s}
.book:hover{transform:translateY(-3px);box-shadow:0 14px 30px -18px rgba(0,0,0,.45)}
.book .big{font-size:54px;font-weight:900;line-height:1;font-family:"Noto Sans JP";color:var(--bc)}
.book .nm{font-size:20px;font-weight:700;margin-top:6px}
.book .jp{color:var(--muted);font-size:15px}
.book .meta{margin-top:12px;font-size:14px;color:var(--muted)}
.book .go{margin-top:14px;display:inline-block;background:var(--bc);color:#fff;border-radius:999px;padding:6px 16px;font-weight:700;font-size:14px}
.book::after{content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;background:var(--bc);opacity:.12}
.packs{display:grid;gap:14px}
.pack{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 18px}
.pack h3{margin:0 0 4px;font-size:18px}
.pack .pm{color:var(--muted);font-size:14px}
.lchips{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.lchip{display:inline-block;text-decoration:none;border:1px solid var(--line);background:var(--bg);border-radius:10px;padding:3px 10px;font-weight:600;font-size:14px}
.lchip.na{opacity:.5;text-decoration:line-through}
.pact{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.btn{border:0;border-radius:999px;padding:7px 16px;font:inherit;font-weight:700;font-size:14px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.btn.pri{background:var(--brand);color:#fff}
:root[data-theme="dark"] .btn.pri{color:#1c1f23}
.btn.sec{background:var(--accent-soft);color:var(--accent)}
.url{font-size:12px;color:var(--muted);word-break:break-all;flex:1 1 220px}
.crumb{margin:12px 0 0;font-size:14px}
.crumb a{color:var(--accent);font-weight:600;text-decoration:none}
footer{text-align:center;color:var(--muted);font-size:13px;margin-top:28px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(40px);background:#1f2328;color:#fff;padding:8px 18px;border-radius:999px;font-weight:600;opacity:0;transition:.25s;z-index:80;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- lesson tabs ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 4px}
.tab{border:1.5px solid var(--line);background:var(--card);color:var(--ink);font:inherit;font-weight:700;font-size:15px;padding:6px 14px;border-radius:12px;cursor:pointer;display:flex;align-items:center;gap:6px}
.tab small{font-weight:600;font-size:12px;color:var(--ok)}
.tab.on{background:var(--brand);border-color:var(--brand);color:#fff}
.tab.on small{color:#fff}
:root[data-theme="dark"] .tab.on{color:#1c1f23}
.tab.na{opacity:.55}
.inst{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 18px;margin:14px 0 6px;font-size:15px;color:var(--muted)}
.inst .jp{color:var(--ink);font-size:16px}
.inst .jp ruby rt{color:var(--brand)}
.soon{background:var(--card);border:1px dashed var(--line);border-radius:16px;padding:40px 20px;text-align:center;color:var(--muted);margin:16px 0}

/* ---------- question ---------- */
.q{--qc:var(--brand);background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;margin:16px 0;transition:background .3s}
.q.flash{animation:fl 1.2s}
@keyframes fl{0%,100%{box-shadow:none}30%{box-shadow:0 0 0 4px var(--qc)}}
:root[data-theme="color"] .q{border-top:6px solid var(--qc);box-shadow:0 8px 24px -14px var(--qc)}
.qtop{display:grid;grid-template-columns:1fr 1.15fr;gap:20px;align-items:start}
.qtop.noimg{grid-template-columns:1fr}
.dl u{text-underline-offset:4px;text-decoration-thickness:2px}
@media (max-width:640px){.qtop{grid-template-columns:1fr}}
.qn{display:inline-grid;place-items:center;min-width:32px;height:32px;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-weight:700;margin-bottom:10px}
:root[data-theme="color"] .qn{background:var(--qc);color:#fff}
.dl{margin:0 0 14px}
.dl .jp{font-size:19px}
.dl .ro{font-size:16px;margin-left:30px}
.dl .sp{display:inline-block;width:30px;font-family:"Noto Sans JP";font-size:19px}
:root[data-theme="color"] .dl .sp{color:var(--qc);font-weight:700}
.pt{color:var(--pt);font-size:15px}
.pic{border:3px solid var(--frame);border-radius:6px;overflow:hidden;cursor:zoom-in;background:#fff}
.pic img{display:block;width:100%;height:auto}
.zoomhint{font-size:12px;color:var(--muted);text-align:right;margin-top:4px}
.opts{margin-top:18px;display:grid;gap:10px}
.opt{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:transparent;border:1.5px solid var(--line);border-radius:12px;padding:11px 14px;font:inherit;color:var(--ink);cursor:pointer;transition:border-color .15s,background .15s,transform .1s}
.opt:hover:not(:disabled){border-color:var(--qc);transform:translateX(2px)}
:root[data-theme="color"] .opt:hover:not(:disabled){background:color-mix(in srgb,var(--qc) 8%,transparent)}
.qnote{margin-top:14px;font-size:13px;color:var(--muted);background:var(--accent-soft);border-radius:8px;padding:6px 10px}
.opt .ol{display:flex;align-items:center;gap:14px;flex:1}
.imgopts{grid-template-columns:repeat(3,1fr)}
.imgopts .opt{flex-direction:column;align-items:stretch;padding:8px;justify-content:space-between}
.imgopts .opt img{width:auto;max-width:100%;height:auto;border-radius:6px;background:#fff;display:block;margin:0 auto}
@media (max-width:480px){.imgopts{gap:6px}.imgopts .opt{padding:5px}.imgopts .ol{gap:6px}}
.opt .c{flex:none;width:22px;height:22px;border:2px solid var(--muted);border-radius:50%}
.opt .jp{font-size:17px}
.opt .r{color:var(--muted);margin-left:6px}
.opt:disabled{cursor:default}
.opt.ok{border-color:var(--ok);background:var(--ok-soft)}
.opt.ok .c{border-color:var(--ok);background:var(--ok)}
.opt.bad{border-color:var(--bad);background:var(--bad-soft)}
.opt.bad .c{border-color:var(--bad);background:var(--bad)}
.opt .mk{margin-left:auto;font-weight:700}
.tbtn{margin-top:16px;background:var(--accent-soft);color:var(--accent);border:0;border-radius:10px;padding:8px 14px;font:inherit;font-weight:600;cursor:pointer}
.tbox{display:none;margin-top:10px;border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:0 12px 12px 0;padding:12px 16px}
.tbox.show{display:block}
.tbox .scene{font-size:14px;color:var(--muted);margin:0 0 10px}
.tl{padding:6px 0;border-bottom:1px dashed var(--line)}
.tl:last-child{border:0}
.tl .jp{font-size:17px}.tl .ro{color:var(--muted)}.tl .bn{font-weight:600}
.exp{display:none;margin-top:16px;border-radius:14px;padding:16px 18px;background:var(--brand-soft);border:1px solid var(--line);line-height:1.9}
.exp.show{display:block}
.verdict{font-weight:700;font-size:17px;margin:0 0 8px}
.verdict.ok{color:var(--ok)}.verdict.bad{color:var(--bad)}
.lv{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.lv span{font-size:12px;font-weight:700;border:1px solid var(--brand);color:var(--brand);border-radius:6px;padding:1px 8px;line-height:1.9}
.ept{font-size:16px;margin:0 0 8px}
.form{font-family:"Noto Sans JP","Hind Siliguri";background:var(--card);border:1px dashed var(--brand);border-radius:8px;padding:8px 12px;margin:0 0 10px;font-size:15px}
.form b{color:var(--brand)}
.exp ul{margin:0 0 10px;padding-left:20px}
.exp li{margin-bottom:6px}
.exp h4{margin:12px 0 6px;font-size:15px}
.wr{display:grid;gap:6px}
.wr div{background:var(--card);border-radius:8px;padding:7px 12px;font-size:15px}
.wr b.jp{color:var(--bad)}
.tip{margin-top:10px;font-size:15px;background:var(--card);border-radius:8px;padding:8px 12px}
.lb{position:fixed;inset:0;background:rgba(0,0,0,.88);display:none;align-items:center;justify-content:center;z-index:70;cursor:zoom-out;padding:12px}
.lb.show{display:flex}
.lb img{max-width:100%;max-height:100%;background:#fff}

/* ---------- submit box ---------- */
.submitbox{margin-top:22px;background:var(--card);border:2px dashed var(--brand);border-radius:18px;padding:20px;text-align:center}
.submitbox p{margin:0 0 12px;color:var(--muted);font-weight:600}
.subbtn{border:0;border-radius:14px;padding:13px 30px;font:inherit;font-size:18px;font-weight:700;cursor:pointer;color:#fff;background:var(--hero);box-shadow:0 10px 24px -12px rgba(0,0,0,.5);transition:transform .1s}
.subbtn:hover{transform:translateY(-2px)}
.subbtn:active{transform:translateY(0)}

/* ---------- result modal ---------- */
.rmodal{position:fixed;inset:0;z-index:60;background:rgba(10,12,16,.6);backdrop-filter:blur(3px);display:none;align-items:flex-start;justify-content:center;padding:18px 12px;overflow:auto}
.rmodal.show{display:flex}
.rcard{width:100%;max-width:560px;background:var(--card);color:var(--ink);border-radius:22px;overflow:hidden;box-shadow:0 30px 60px -20px rgba(0,0,0,.6);animation:pop .35s ease-out}
@keyframes pop{from{transform:translateY(16px) scale(.97);opacity:0}to{transform:none;opacity:1}}
.rhead{position:relative;background:var(--hero);color:var(--hero-ink);padding:20px 22px 22px;text-align:center}
.rhead .rlogo{width:64px;height:64px;border-radius:50%;border:3px solid rgba(255,255,255,.85);background:#fff;overflow:hidden;margin:0 auto 8px}
.rhead .rlogo img{width:100%;height:100%;object-fit:cover;display:block}
.rhead .rbook{font-size:14px;opacity:.95;font-weight:600}
.rhead h2{margin:2px 0 0;font-size:24px}
.rclose{position:absolute;top:10px;right:12px;width:34px;height:34px;border-radius:50%;border:0;background:rgba(255,255,255,.25);color:inherit;font-size:20px;cursor:pointer}
.rbody{padding:20px 22px 24px}
.ring{--p:0;width:150px;height:150px;border-radius:50%;margin:0 auto;display:grid;place-items:center;background:conic-gradient(var(--rc) calc(var(--p)*1%),var(--line) 0)}
.ring>div{width:118px;height:118px;border-radius:50%;background:var(--card);display:grid;place-items:center;text-align:center}
.ring b{font-size:34px;line-height:1}
.ring span{font-size:13px;color:var(--muted)}
.rline{text-align:center;font-size:17px;margin:14px 0 4px}
.rline b{color:var(--brand)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:16px 0}
.stat{border-radius:14px;padding:10px 6px;text-align:center;background:var(--bg)}
.stat b{display:block;font-size:24px;line-height:1.2}
.stat span{font-size:12.5px;color:var(--muted);font-weight:600}
.stat.ok b{color:var(--ok)}.stat.bad b{color:var(--bad)}.stat.un b{color:var(--warn)}.stat.tt b{color:var(--accent)}
@media (max-width:420px){.stats{grid-template-columns:repeat(2,1fr)}}
.msg{border-radius:16px;padding:16px 18px;margin-top:6px}
.msg h3{margin:0 0 6px;font-size:20px}
.msg p{margin:0}
.msg.t1{background:var(--ok-soft)} .msg.t1 h3{color:var(--ok)}
.msg.t2{background:var(--accent-soft)} .msg.t2 h3{color:var(--accent)}
.msg.t3{background:var(--warn-soft)} .msg.t3 h3{color:var(--warn)}
.msg.t4{background:var(--bad-soft)} .msg.t4 h3{color:var(--bad)}
.stay{margin-top:12px;border:1.5px solid var(--brand);border-radius:16px;padding:14px 16px;background:var(--brand-soft);font-weight:600}
.next{margin-top:12px;text-align:center;font-weight:700;font-size:17px}
.wlist{margin-top:14px}
.wlist h4{margin:0 0 8px;font-size:15px}
.wlist .wq{display:inline-block;margin:0 6px 6px 0;border:1px solid var(--bad);color:var(--bad);background:var(--bad-soft);border-radius:8px;padding:2px 10px;font-weight:700;cursor:pointer;font:inherit;font-size:14px}
.wlist .wq.un{border-color:var(--warn);color:var(--warn);background:var(--warn-soft)}
.racts{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}
.warnbox{text-align:center}
.warnbox .wic{font-size:44px}
.warnbox p{font-size:17px}