/* ═══════════════════════════════════════════════
   FILE: styles/quiz.css
   RESPONSIBILITY: Quiz page, per-question timer,
     options, feedback boxes, results page, review
   ═══════════════════════════════════════════════ */

/* ── QUIZ HEADER ── */
.quiz-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.qmeta-label{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--mid)}
.qtimer{font-family:'Playfair Display',serif;font-size:1.4rem;font-weight:700;color:var(--ink);min-width:56px;text-align:right}
.qtimer.warn{color:var(--red);animation:pulse .7s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* ── PROGRESS ── */
.prog-wrap{height:5px;background:var(--border);border-radius:5px;margin-bottom:18px;overflow:hidden}
.prog-fill{height:100%;background:linear-gradient(90deg,var(--gold),#e5b84a);border-radius:5px;transition:width .4s ease}

/* ── SUBJECT TAG ── */
.qtag{background:var(--ink);color:var(--gold);padding:4px 14px;border-radius:20px;font-size:.73rem;font-weight:600;display:inline-block;margin-bottom:14px}

/* ── QUESTION CARD ── */
.qcard{background:#fff;border-radius:var(--r);padding:30px 34px;box-shadow:0 4px 24px rgba(0,0,0,.08);margin-bottom:16px;animation:fadeUp .28s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.qnum{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--gold);margin-bottom:8px}
.qpassage{background:var(--cream);border-left:3px solid var(--gold);padding:13px 17px;border-radius:0 8px 8px 0;font-size:.9rem;line-height:1.8;margin-bottom:18px;font-style:italic;color:#374151}
.nvr-diag{background:#f0f4ff;border:2px solid #c7d2fe;border-radius:10px;padding:12px 16px;margin-bottom:18px;display:flex;justify-content:center;align-items:center;overflow:hidden}
.nvr-diag svg{max-width:100%;height:auto;display:block}
.qtext{font-size:1.08rem;line-height:1.7;margin-bottom:22px}

/* ── OPTIONS ── */
.opts{list-style:none;display:flex;flex-direction:column;gap:8px}
.opt{width:100%;text-align:left;padding:12px 16px;border:2px solid var(--border);border-radius:10px;background:#fff;font-family:'DM Sans',sans-serif;font-size:.91rem;cursor:pointer;transition:all .18s;display:flex;align-items:center;gap:10px}
.opt .opt-letter{width:26px;height:26px;border-radius:50%;background:var(--cream);display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;flex-shrink:0;transition:all .18s}
.opt:hover:not(.disabled){border-color:var(--gold);background:var(--gold-light)}
.opt.correct{border-color:var(--green);background:var(--green-light)}.opt.correct .opt-letter{background:var(--green);color:#fff}
.opt.wrong{border-color:var(--red);background:var(--red-light)}.opt.wrong .opt-letter{background:var(--red);color:#fff}
.opt.disabled{cursor:default}

/* ── FEEDBACK ── */
.fbbox{border-radius:10px;padding:13px 17px;margin-top:13px;font-size:.87rem;line-height:1.65;display:none}
.fbbox.show{display:block}
.fbbox.fb-correct{background:var(--green-light);border:1px solid rgba(42,107,78,.22);color:#1a4a35}
.fbbox.fb-wrong{background:var(--red-light);border:1px solid rgba(192,57,43,.18);color:#7b2020}
.fblabel{font-weight:700;font-size:.73rem;text-transform:uppercase;letter-spacing:.07em;margin-bottom:3px}
.fbexp{margin-top:5px;color:var(--ink);font-size:.84rem}
.fbzh{margin-top:9px;padding:8px 12px;background:var(--gold-light);border-radius:7px;font-size:.82rem;color:#4B3B00;line-height:1.65}
.fbzh::before{content:"📖 中文解釋：";font-weight:600;display:block;margin-bottom:2px}

/* ── NEXT BUTTON ── */
.btn-next{margin-top:16px;padding:12px 28px;background:var(--ink);color:#fff;border:none;border-radius:10px;font-family:'DM Sans',sans-serif;font-weight:500;font-size:.9rem;cursor:pointer;transition:background .2s;display:none}
.btn-next:hover{background:#2a2a48}

/* ── RESULTS ── */
#screen-results{text-align:center;padding-top:20px}
.ring-wrap{position:relative;width:136px;height:136px;margin:0 auto 20px}
.ring-wrap svg{transform:rotate(-90deg)}
.ring-num{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.rpct{font-family:'Playfair Display',serif;font-size:2rem;font-weight:900;line-height:1}
.rlbl{font-size:.65rem;font-weight:700;letter-spacing:.08em;color:var(--mid);text-transform:uppercase;margin-top:2px}
#rtitle{font-family:'Playfair Display',serif;font-size:2rem;margin-bottom:6px}
.rsub{color:var(--mid);margin-bottom:24px}
.sgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:24px}
.sbox{background:var(--white);border-radius:12px;padding:16px;box-shadow:var(--shadow);text-align:center}
.snum{font-family:'Playfair Display',serif;font-size:1.6rem;font-weight:900;margin-bottom:2px}
.slbl{font-size:.72rem;color:var(--mid);font-weight:500;text-transform:uppercase;letter-spacing:.04em}
.ract{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:24px}

/* ── ANSWER REVIEW ── */
.rev-list{text-align:left;margin-top:8px}
.rev-item{background:var(--white);border-radius:10px;padding:16px 20px;margin-bottom:10px;border-left:4px solid var(--border);box-shadow:var(--shadow)}
.rev-item.ok{border-left-color:var(--green)}
.rev-item.bad{border-left-color:var(--red)}
.riq{font-size:.88rem;font-weight:500;margin-bottom:5px}
.ria{font-size:.8rem;color:var(--mid)}
.ca{color:var(--green);font-weight:600}.ua{color:var(--red)}

/* ══════════════════════════════════════════════
   v14 NEW: TOOLTIP SYSTEM
   ══════════════════════════════════════════════ */
.term-tooltip {
  border-bottom: 1.5px dashed var(--gold);
  cursor: pointer;
  position: relative;
}
.term-tooltip:hover { background: var(--gold-light); border-radius: 3px; }
.term-q {
  font-size: .65rem;
  color: var(--gold);
  margin-left: 1px;
  font-style: normal;
}
.tooltip-popup {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: #1e1b4b;
  color: #fff;
  border-radius: 14px;
  padding: 16px 20px;
  max-width: min(360px, 90vw);
  width: 100%;
  z-index: 8000;
  box-shadow: 0 8px 40px rgba(0,0,0,.35);
  animation: fadeUp .2s ease;
}
.ttp-term {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fbbf24;
  text-transform: capitalize;
}
.ttp-en {
  font-size: .85rem;
  line-height: 1.6;
  margin-bottom: 8px;
  color: #e0e7ff;
}
.ttp-zh {
  font-size: .82rem;
  line-height: 1.6;
  color: #c7d2fe;
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 8px;
  margin-bottom: 10px;
}
.ttp-close {
  background: rgba(255,255,255,.15);
  border: none;
  color: #fff;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: .8rem;
  cursor: pointer;
  width: 100%;
  transition: background .15s;
}
.ttp-close:hover { background: rgba(255,255,255,.25); }

/* ══════════════════════════════════════════════
   v14 NEW: NVR DIAGRAM HINT HIDING
   ══════════════════════════════════════════════ */
text.diag-hint-hidden {
  opacity: 0;
  transition: opacity .4s ease .3s;
}
/* When class is removed, text fades in */
text:not(.diag-hint-hidden) {
  opacity: 1;
}

/* ══════════════════════════════════════════════
   v14 NEW: UPGRADE MODAL
   ══════════════════════════════════════════════ */
#upgrade-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(3px);
}
#upgrade-modal.open { display: flex; }

/* ══════════════════════════════════════════════
   v14 NEW: WEEKLY SUMMARY PAGE PRINT STYLES
   ══════════════════════════════════════════════ */
@media print {
  nav, .home-grid, #nav-weekly, button { display: none !important; }
  #page-weekly-summary { display: block !important; }
  .page:not(#page-weekly-summary) { display: none !important; }
  body { background: white; }
}