/* =====================================================================
   exam-ui.css  — NEW test-page design (navy header, section dropdown,
   question tabs, two-column question card) + the navbar logo lockup.
   Load it AFTER app.css. Every class starts with "kx-" so nothing else
   on the site (home page, admin, results page) is affected.
   ===================================================================== */
:root{
  --k-ink:#1B2540;      /* navy */
  --k-red:#C8323C;      /* academy red */
  --k-bg:#FAF8F4;      /* page background */
  --k-sand:#F1EEE6;
  --k-line:#E1DCCF;
  --k-muted:#5A6178;
  --k-blue:#3B5BDB;
  --k-amber:#B4531B;
  --k-ok:#1E9E62;
  --k-sun:#E9A93A;
}

/* ---------- logo lockup (navbar + exam header) ---------- */
.kx-lockup{display:inline-flex;align-items:center;gap:12px;color:var(--k-ink);line-height:1;text-decoration:none}
.kx-lockup img{width:52px;height:52px;flex:none}
.kx-lockup .lk{display:flex;flex-direction:column;gap:5px}
.kx-lockup .lk-name{font:300 1.65rem/1 'Poppins',sans-serif;letter-spacing:-.04em;white-space:nowrap}
.kx-lockup .lk-name b{font-weight:700}
.kx-lockup .lk-jp{font:700 .62rem/1 'Noto Sans JP',sans-serif;letter-spacing:.3em;color:var(--k-red);white-space:nowrap}
.kx-lockup .lk-cap{font:600 .42rem/1 'Poppins',sans-serif;letter-spacing:.3em;color:var(--k-muted);white-space:nowrap}
.kx-lockup.sm img{width:44px;height:44px}
.kx-lockup.sm .lk-name{font-size:1.4rem}
.nav .kx-lockup img{width:44px;height:44px}
.nav .kx-lockup .lk-name{font-size:1.4rem}
@media(max-width:520px){.nav .kx-lockup .lk-jp,.nav .kx-lockup .lk-cap{display:none}.nav .kx-lockup img{width:38px;height:38px}.nav .kx-lockup .lk-name{font-size:1.2rem}}

/* ---------- exam page ---------- */
.kx{min-height:100%;display:flex;flex-direction:column;background:var(--k-bg);color:var(--k-ink);font-family:'Poppins','Noto Sans JP',sans-serif}
.kx *{box-sizing:border-box}

.kx-top{display:flex;align-items:center;gap:20px;padding:12px 32px;background:var(--k-ink);color:#fff}
.kx-logo{background:var(--k-bg);border-radius:14px;padding:10px 20px;box-shadow:0 2px 10px rgba(0,0,0,.25)}
.kx-cand{border-left:1px solid rgba(255,255,255,.28);padding-left:20px;line-height:1.25;min-width:0}
.kx-cand small{display:block;font-size:.8rem;opacity:.75}
.kx-cand b{display:block;font-size:1.1rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:26vw}
.kx-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.kx-pill{display:flex;align-items:center;gap:8px;padding:.7rem 1.2rem;border:1px solid rgba(255,255,255,.3);border-radius:999px;background:rgba(255,255,255,.07);font-weight:500;white-space:nowrap}
.kx-pill b{font-weight:700;font-variant-numeric:tabular-nums}
.kx-pill svg{width:18px;height:18px}
.kx-pill.low{background:var(--k-red);border-color:var(--k-red);animation:kxpulse 1s infinite}
@keyframes kxpulse{50%{transform:scale(1.05)}}
.kx-finish{white-space:nowrap;background:var(--k-red);color:#fff;border:0;border-radius:12px;padding:.9rem 1.8rem;font:700 1.05rem 'Poppins',sans-serif;cursor:pointer;box-shadow:0 8px 20px rgba(200,50,60,.4)}
.kx-finish:hover{filter:brightness(1.08)}

.kx-bar{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:start;gap:18px;padding:14px 32px 12px;background:#fff;box-shadow:0 4px 14px rgba(27,37,64,.08);position:relative;z-index:2}
.kx-secwrap select{width:100%;max-width:585px;margin:0;appearance:none;-webkit-appearance:none;padding:.95rem 3rem .95rem 1.2rem;font:600 1.1rem 'Poppins','Noto Sans JP',sans-serif;color:var(--k-ink);background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%231B2540' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 1.1rem center;border:1px solid var(--k-line);border-radius:14px;box-shadow:0 2px 8px rgba(27,37,64,.08);cursor:pointer}
.kx-tabsbox{display:flex;flex-direction:column;align-items:center;gap:8px}
.kx-tabsrow{display:flex;align-items:center;gap:8px}
.kx-chev{width:30px;height:60px;border:0;background:none;font-size:1.6rem;color:var(--k-muted);cursor:pointer;line-height:1}
.kx-chev:disabled{opacity:.25;cursor:default}
.kx-tabs{display:flex;gap:4px}
.kx-tab{position:relative;min-width:72px;height:62px;border:0;border-bottom:3px solid transparent;background:var(--k-sand);color:#4b5168;font:600 1.2rem 'Poppins',sans-serif;cursor:pointer;padding:0 8px}
.kx-tab:hover{background:#e9e4d8}
.kx-tab.done{background:#E3F4EA;color:#17724a}
.kx-tab.cur{background:#fff;color:var(--k-ink);font-weight:700;border-bottom-color:var(--k-red);box-shadow:inset 0 0 0 1px var(--k-line)}
.kx-tab.flag::after{content:'';position:absolute;top:7px;right:7px;width:9px;height:9px;border-radius:50%;background:var(--k-sun)}
.kx-att{background:var(--k-sand);border:1px solid var(--k-line);border-radius:999px;padding:.25rem .95rem;font:600 .85rem 'Poppins',sans-serif;color:var(--k-muted)}
.kx-bar-r{display:flex;gap:12px;justify-content:flex-end;align-items:center}
.kx-sq,.kx-next{height:58px;border:1px solid var(--k-line);background:#fff;border-radius:14px;box-shadow:0 2px 8px rgba(27,37,64,.08);color:var(--k-ink);cursor:pointer;font:700 1.1rem 'Poppins',sans-serif}
.kx-sq{width:58px;display:grid;place-items:center}
.kx-sq svg{width:24px;height:24px}
.kx-next{padding:0 1.7rem}
.kx-next.ghost{font-weight:600;color:var(--k-muted)}
.kx-sq:hover,.kx-next:hover{border-color:#bdb6a3}
.kx-next:disabled{opacity:.4;cursor:default}

.kx-card{flex:1;margin:22px 32px 0;background:#fff;border-radius:22px;box-shadow:0 10px 30px rgba(27,37,64,.08);display:grid;grid-template-columns:1fr 1fr;min-height:58vh}
.kx-q,.kx-a{padding:52px 60px;min-width:0}
.kx-a{border-left:1px solid var(--k-line)}
.kx-h{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:30px}
.kx-h h3{margin:0;font:700 1.9rem 'Poppins',sans-serif;letter-spacing:-.02em}
.kx-link{display:inline-flex;align-items:center;gap:8px;border:0;background:none;cursor:pointer;font:600 1.15rem 'Poppins',sans-serif;color:var(--k-muted);padding:.3rem 0}
.kx-link.amber{color:var(--k-amber)}
.kx-link svg{width:20px;height:20px}
.kx-link:hover{text-decoration:underline}

.kx-opts{display:flex;flex-direction:column;gap:20px}
.kx-opt{display:flex;gap:18px;align-items:center;text-align:left;width:100%;padding:1.45rem 1.6rem;border:1px solid var(--k-line);border-radius:14px;background:#fff;cursor:pointer;font:500 1.35rem 'Noto Sans JP','Poppins',sans-serif;color:var(--k-ink);transition:border-color .12s,background .12s,box-shadow .12s}
.kx-opt:hover{border-color:#9fb0ee;background:#f7f9ff}
.kx-radio{flex:none;width:30px;height:30px;border-radius:50%;border:2px solid #c9c5ba;background:#fff;display:grid;place-items:center}
.kx-opt.sel{border-color:var(--k-blue);background:#f4f7ff;box-shadow:0 0 0 2px rgba(59,91,219,.14)}
.kx-opt.sel .kx-radio{border-color:var(--k-blue)}
.kx-opt.sel .kx-radio::after{content:'';width:14px;height:14px;border-radius:50%;background:var(--k-blue)}
.kx-opt.right{background:#dff5e8;border-color:var(--k-ok)}.kx-opt.right .kx-radio{border-color:var(--k-ok);background:var(--k-ok)}
.kx-opt.wrong{background:#fde4e6;border-color:var(--k-red)}.kx-opt.wrong .kx-radio{border-color:var(--k-red);background:var(--k-red)}
.kx-opt:disabled{cursor:default}

/* question content (shared class names, scoped to .kx so the results page is untouched) */
.kx .q-ins{font-size:.95rem;background:var(--k-sand);border-radius:10px;padding:.6rem .9rem;margin-bottom:16px;color:#3b4259}
.kx .q-passage{font-family:'Noto Sans JP','Poppins',sans-serif;font-size:1.15rem;line-height:2;background:#fffdf7;border:1px solid var(--k-line);border-radius:12px;padding:16px 18px;margin-bottom:18px}
.kx .q-text{font-family:'Noto Sans JP','Poppins',sans-serif;font-size:1.9rem;font-weight:500;line-height:1.7}
.kx .q-img{max-width:100%;border:1px solid var(--k-line);border-radius:12px;margin-bottom:14px}
.kx .audio{background:var(--k-sand);border-radius:12px;padding:12px 14px;margin-bottom:16px}
.kx .audio audio{width:100%;margin-top:6px}
.kx .audio iframe{width:100%;height:70px;border:0}
.kx .audio small{display:block;margin-top:6px;color:var(--k-muted)}
.kx .fb{border:0;border-radius:12px;padding:14px 16px;background:var(--k-sand);font-size:.98rem;box-shadow:none}
.kx .fb.ok{background:#dff5e8}.kx .fb.no{background:#fde4e6}
.kx-opts .fb{margin-top:6px}

.kx-fab{position:fixed;right:14px;top:52%;width:62px;height:62px;border:0;border-radius:14px;background:var(--k-blue);color:#fff;cursor:pointer;display:grid;place-items:center;box-shadow:0 10px 24px rgba(59,91,219,.45);z-index:5}
.kx-fab svg{width:28px;height:28px}
.kx-fab:disabled{opacity:.35;cursor:default}
.kx-copy{text-align:center;color:var(--k-muted);font-size:.95rem;padding:22px 12px 26px}

/* question overview modal (lives in #modal-root, so no .kx parent) */
.kx-pal{display:grid;grid-template-columns:repeat(auto-fill,minmax(46px,1fr));gap:8px}
.kx-pal button{height:44px;border:1px solid var(--k-line);border-radius:10px;background:#fff;font:600 .95rem 'Poppins',sans-serif;cursor:pointer;position:relative;padding:0;color:var(--k-ink)}
.kx-pal button.done{background:#E3F4EA;color:#17724a}
.kx-pal button.flag::after{content:'';position:absolute;top:4px;right:4px;width:9px;height:9px;border-radius:50%;background:var(--k-sun)}
.kx-pal button.cur{outline:2px solid var(--k-red);outline-offset:1px}
.kx-legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.8rem;color:var(--k-muted);margin-top:14px}
.kx-legend i{display:inline-block;width:13px;height:13px;border:1px solid var(--k-line);border-radius:4px;margin-right:5px;vertical-align:-2px}

@media(max-width:1100px){
  .kx-bar{grid-template-columns:1fr;justify-items:stretch}
  .kx-secwrap select{max-width:none}
  .kx-bar-r{justify-content:space-between}
  .kx-tabsbox{align-items:stretch}.kx-tabsrow{justify-content:center}
}
@media(max-width:820px){
  .kx-top{padding:10px 14px;gap:10px;flex-wrap:wrap}
  .kx-logo{padding:6px 10px}.kx-logo .lk-jp,.kx-logo .lk-cap{display:none}
  .kx-cand{padding-left:10px}.kx-cand b{max-width:34vw}
  .kx-right{width:100%;justify-content:space-between;margin-left:0}
  .kx-bar{padding:12px 14px}
  .kx-tab{min-width:46px;height:50px;font-size:1rem}
  .kx-card{grid-template-columns:1fr;margin:16px 12px 0;min-height:0}
  .kx-a{border-left:0;border-top:1px solid var(--k-line)}
  .kx-q,.kx-a{padding:26px 20px}
  .kx .q-text{font-size:1.45rem}.kx-opt{font-size:1.15rem;padding:1.1rem 1.1rem}
  .kx-h h3{font-size:1.4rem}.kx-fab{display:none}
}
.brand .adm-tag{margin-left:10px;padding:.15rem .6rem;border-radius:999px;background:var(--k-ink);color:#fff;font:600 .7rem 'Poppins',sans-serif;letter-spacing:.08em}