/* =========================================================================
   voca.css — TOEFL 어휘 화면
   -------------------------------------------------------------------------
   헤더·버튼·타이포는 css/site.css. 말풍선·출처 배지는 css/bubble.css.
   여기에는 어휘 화면에만 있는 것만 둡니다.
   ========================================================================= */

main { padding-top: var(--header-h); }
.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }
section { padding: 60px 0; }
h2.sec { font-size: clamp(22px,3vw,32px); font-weight: 700; letter-spacing: -.03em; margin-bottom: 10px; }
p.lead { font-size: 15px; color: var(--ink-soft); line-height: 1.75; margin-bottom: 28px; max-width: 760px; }
p.lead b { color: var(--ink); font-weight: 600; }

.top { background: var(--dark); color: #fff; padding: 72px 0 60px; }
.top .eyebrow { color: rgba(255,255,255,.85); margin-bottom: 20px; }
.top h1 { font-size: clamp(28px,4.4vw,50px); font-weight: 200; letter-spacing: .02em;
  line-height: 1.12; margin-bottom: 18px; }
.top p { font-size: clamp(15px,1.6vw,18px); font-weight: 300; line-height: 1.75;
  color: rgba(255,255,255,.86); max-width: 720px; }
.top p b { font-weight: 600; color: #fff; }

/* ---------- 계층 카드 ---------- */
.tiers { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 14px; }
.tier {
  border: 1px solid var(--line); border-radius: 18px; background: #fff; padding: 22px 20px;
}
.tier-top { display: flex; align-items: baseline; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.tier h3 { font-size: 17px; letter-spacing: -.02em; }
.tier .en { font-family: var(--disp); font-size: 10.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--ink-soft); }
.tier .n { margin-left: auto; font-size: 12.5px; color: var(--ink-soft); }
.tier p { font-size: 13.5px; line-height: 1.72; color: #374151; }
.tier p b { font-weight: 600; color: var(--ink); }

/* 근거 세기 배지 — 세 등급이 다르게 생겨야 합니다 */
.ev-tag {
  display: inline-block; margin-top: 12px; font-size: 11px; padding: 4px 10px;
  border-radius: 999px; border: 1px solid var(--line);
}
.ev-strong    { background: #f4f7fd; border-color: #c3d0ea; color: var(--blue); font-weight: 700; }
.ev-strong-kr { background: #f2f8f4; border-color: #bcd9c6; color: #2b6b43; font-weight: 700; }
.ev-medium    { background: #fbf9f3; border-color: #d9d2bf; color: #8a6a22; }
.ev-weak      { background: #fdf4f2; border-color: #e6c7bf; color: #a4402a; border-style: dashed; }
.tier .srcnote { display: block; margin-top: 9px; font-size: 11.5px; color: #9aa3b0; line-height: 1.6; }

/* ---------- 일자 ---------- */
.days { display: grid; grid-template-columns: repeat(auto-fill,minmax(210px,1fr)); gap: 12px; }
.day {
  border: 1px solid var(--line); border-radius: 16px; background: #fff; padding: 18px 18px;
  text-align: left; transition: border-color .2s, transform .2s, box-shadow .2s;
}
.day:hover { border-color: var(--ink); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(16,20,24,.07); }
.day b { display: block; font-family: var(--disp); font-size: 15px; letter-spacing: .1em; }
.day span { display: block; margin-top: 6px; font-size: 12.5px; color: var(--ink-soft); line-height: 1.55; }
.day .dbar { display: block; height: 5px; border-radius: 999px; background: #e8ebef; margin-top: 12px; overflow: hidden; }
.day .dbar i { display: block; height: 100%; background: var(--blue); width: 0; border-radius: 999px; }
.day.done { border-color: var(--blue); background: #f7f9fe; }

/* ---------- 학습 ---------- */
.study-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; flex-wrap: wrap; }
.study-modes { display: flex; gap: 8px; }
.mbtn { font-size: 13px; padding: 9px 16px; border: 1px solid var(--line); border-radius: 999px;
  background: #fff; transition: .15s; }
.mbtn.on { background: var(--ink); color: #fff; border-color: var(--ink); }

.study-prog { display: flex; align-items: center; gap: 14px; margin: 6px 0 26px; }
.study-prog span { font-size: 13px; font-weight: 600; white-space: nowrap; }
.study-prog i { flex: 1; height: 6px; border-radius: 999px; background: #e8ebef; overflow: hidden; }
.study-prog i b { display: block; height: 100%; background: var(--blue); width: 0; border-radius: 999px;
  transition: width .35s; }

/* 카드 — 각지지 않게 */
.card {
  border: 1px solid var(--line); border-radius: 24px; background: #fff;
  padding: 44px 34px; text-align: center; min-height: 300px;
  display: flex; flex-direction: column; justify-content: center;
  box-shadow: 0 12px 34px rgba(16,20,24,.06);
}
.card .tierlabel { font-family: var(--disp); font-size: 10.5px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--blue); margin-bottom: 16px; }
.card .word { font-size: clamp(28px,5vw,46px); font-weight: 600; letter-spacing: -.02em; line-height: 1.2; }
.card .ko { font-size: clamp(18px,2.6vw,24px); font-weight: 700; margin-top: 6px; }
.card .eg { font-size: 16px; line-height: 1.75; color: #374151; margin-top: 20px; max-width: 620px;
  margin-left: auto; margin-right: auto; }
.card .egko { font-size: 14px; line-height: 1.7; color: var(--ink-soft); margin-top: 8px; }
.card .note {
  margin-top: 20px; font-size: 13.5px; line-height: 1.7; color: #8a6a22;
  background: #fbf9f3; border: 1px dashed #d9d2bf; border-radius: 14px;
  padding: 12px 16px; text-align: left; max-width: 620px; margin-left: auto; margin-right: auto;
}
.card .hintflip { margin-top: 22px; font-size: 12.5px; color: #9aa3b0; }

.card-nav { display: flex; gap: 10px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }
.card-nav .jbtn { font-size: 14px; padding: 12px 22px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; transition: .15s; }
.card-nav .jbtn:hover { border-color: var(--ink); }
.card-nav .jbtn.ok { border-color: #2b6b43; color: #2b6b43; }
.card-nav .jbtn.mid { border-color: #b58a2e; color: #8a6a22; }
.card-nav .jbtn.ng { border-color: #b4483a; color: #a4402a; }

/* 퀴즈 */
.qz { max-width: 720px; margin: 0 auto; }
.qz .qword { font-size: clamp(26px,4.4vw,40px); font-weight: 600; text-align: center;
  letter-spacing: -.02em; margin-bottom: 8px; }
.qz .qeg { font-size: 14.5px; color: var(--ink-soft); text-align: center; margin-bottom: 26px; line-height: 1.7; }
.qz .opts { display: flex; flex-direction: column; gap: 10px; }
.qz .opt { border: 1px solid var(--line); border-radius: 16px; background: #fff; padding: 16px 20px;
  font-size: 15.5px; text-align: left; transition: .15s; }
.qz .opt:hover { border-color: var(--ink); }
.qz .opt.right { border-color: #2b6b43; background: #f2f8f4; color: #2b6b43; font-weight: 600; }
.qz .opt.wrong { border-color: #b4483a; background: #fdf4f2; color: #a4402a; }
.qz .after { margin-top: 20px; text-align: center; }

.study-nav { margin-top: 30px; text-align: center; }

/* 다 끝냈을 때 */
.finbox { text-align: center; padding: 40px 0 10px; }
.finbox h3 { font-size: 22px; margin-bottom: 12px; letter-spacing: -.02em; }
.finbox p { font-size: 15px; color: var(--ink-soft); line-height: 1.75; margin-bottom: 22px; }

@media (max-width: 640px) {
  .card { padding: 34px 22px; }
}

/* ── 플래시카드 보조 ─────────────────────────────────────────────────
   키 안내(1·2·3·Space)와 이전/다음. 토익·JLPT 판과 같은 키라서
   문구도 같은 자리에 둡니다 — 세 시험을 오가도 손이 안 헷갈리게. */
.keyhint { display: inline-block; min-width: 18px; margin-left: 6px; padding: 1px 5px;
  border: 1px solid currentColor; border-radius: 5px; opacity: .55;
  font-size: 10.5px; font-weight: 600; line-height: 1.5; vertical-align: 1px; }
.card-nav .jbtn[aria-pressed="true"] { background: currentColor; }
.card-nav .jbtn[aria-pressed="true"] span,
.card-nav .jbtn[aria-pressed="true"] { color: #fff; }
.card-nav .jbtn[aria-pressed="true"].ok  { background: #2b6b43; border-color: #2b6b43; }
.card-nav .jbtn[aria-pressed="true"].mid { background: #8a6a22; border-color: #8a6a22; }
.card-nav .jbtn[aria-pressed="true"].ng  { background: #a4402a; border-color: #a4402a; }

.card-move { display: flex; gap: 10px; justify-content: center; margin-top: 14px; }
.mvbtn { font-size: 13px; padding: 8px 16px; border-radius: 999px; background: none;
  border: 1px solid transparent; color: var(--ink-soft); cursor: pointer; }
.mvbtn:hover:not(:disabled) { color: var(--ink); border-color: var(--line); }
.mvbtn:disabled { opacity: .3; cursor: default; }

.review-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
.review-note { font-size: 13px; color: var(--ink-soft); }

/* ── 개인화 스토리 (voca-app.js · story-engine) ─────────────────────── */
.story-promo{display:block;border:1px solid #d9e0f2;background:linear-gradient(180deg,#f5f8ff,#fff);
  border-radius:16px;padding:18px 20px;margin:0 0 24px;text-decoration:none;color:inherit;
  transition:transform .15s,box-shadow .15s}
.story-promo:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(43,78,162,.1)}
.story-promo-tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.08em;
  color:#fff;background:#2b4ea2;border-radius:999px;padding:2px 9px;margin-right:8px}
.story-promo b{font-size:16px}
.story-promo-sub{display:block;margin-top:5px;font-size:13px;color:#5a6472;line-height:1.6}
.story-banner{display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  background:#101418;color:#fff;border-radius:14px;padding:12px 16px;margin:0 0 16px}
.story-banner b{font-size:15px}
.story-tag{font-size:11px;font-weight:800;letter-spacing:.06em;color:#101418;background:#9fb6e8;
  border-radius:999px;padding:2px 9px}
.story-who{font-size:12.5px;color:#c9d2dc}
.story-edit{margin-left:auto;font-size:12.5px;color:#9fb6e8;text-decoration:underline}
.eg-label{font-size:11px;font-weight:800;letter-spacing:.06em;color:#2b4ea2;margin:10px 0 2px}
.eg--story{background:#f5f8ff;border-left:3px solid #2b4ea2;border-radius:0 8px 8px 0;
  padding:8px 12px;font-style:normal}
.story-cliff{margin-top:16px;background:#101418;color:#fff;border-radius:16px;padding:20px 22px}
.story-cliff .story-tag{background:#d9a514;color:#101418}
.cliff-en{font-size:15.5px;line-height:1.7;margin:10px 0 4px}
.cliff-ko{font-size:13.5px;color:#c9d2dc;line-height:1.65}
.cliff-teaser{margin-top:10px;font-size:12.5px;font-weight:700;color:#9fb6e8}