/* UI/UX 교과서 — 강 본문·위젯 스타일. 원본 bruni-world /uiux/ 의 인라인 <style> 에서 위젯에 필요한 것만 옮겼다.
   모든 선택자는 .lesson-uiux 아래. 색은 블로그 토큰으로 잇고, 블로그에 없는 색만 여기서 두 테마로 정의한다. */

.lesson-uiux {
  --ink: var(--bg); --ink2: var(--surface); --ink3: var(--surface-2);
  --line2: var(--line-2); --muted: var(--text-2); --muted-d: var(--text-3);
  --accent: var(--mint); --accent-soft: var(--mint-soft); --on-accent: var(--mint-ink);
  --warn: #ffc44d;
  --t-bad: rgba(255, 138, 128, .14); --t-bad-line: rgba(255, 138, 128, .32); --t-warn: rgba(255, 196, 77, .11);
  --sk: #3f4247; --dotc: #6c7077; --dis-bg: #26292e; --dis-fg: #6a6e74;
  --mint-72: rgba(33, 241, 168, .72); --mint-86: rgba(33, 241, 168, .86); --ok-fg: var(--mint);
}
:root[data-theme="light"] .lesson-uiux {
  --warn: #7a4f00;
  --t-bad: rgba(179, 38, 30, .09); --t-bad-line: rgba(179, 38, 30, .28); --t-warn: rgba(138, 90, 0, .10);
  --sk: #d6d1c8; --dotc: #9a958c; --dis-bg: #e6e2da; --dis-fg: #8f8a82;
  --mint-72: #0a5f43; --mint-86: #086a4a; --ok-fg: #07603f;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .lesson-uiux {
    --warn: #7a4f00;
    --t-bad: rgba(179, 38, 30, .09); --t-bad-line: rgba(179, 38, 30, .28); --t-warn: rgba(138, 90, 0, .10);
    --sk: #d6d1c8; --dotc: #9a958c; --dis-bg: #e6e2da; --dis-fg: #8f8a82;
    --mint-72: #0a5f43; --mint-86: #086a4a; --ok-fg: #07603f;
  }
}

.lesson-uiux p.mut { color: var(--muted); }
.lesson-uiux .key { margin-top: 20px; padding: 16px 20px; background: var(--mint-dim);
  border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0; font-weight: 600; color: var(--text); }

/* 데모 공통 */
.lesson-uiux .demo { margin-top: 22px; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--ink2); }
.lesson-uiux .demo-bar { display: flex; align-items: center; gap: 10px; justify-content: space-between;
  padding: 11px 16px; border-bottom: 1px solid var(--line2); font-size: 12.5px; color: var(--muted); line-height: 1.5; }
.lesson-uiux .demo-bar b { color: var(--accent); font-weight: 700; letter-spacing: .06em; }
.lesson-uiux .demo-stage { padding: 22px; }
.lesson-uiux .tgl { font-family: inherit; font-size: 12.5px; font-weight: 700; cursor: pointer; color: var(--on-accent);
  background: var(--accent); border: none; padding: 7px 14px; border-radius: 999px; transition: transform .12s; flex: none; min-height: 32px; }
.lesson-uiux .tgl:active { transform: scale(.95); }

/* 3강 — 위계 */
.lesson-uiux .hcard { max-width: 340px; margin: 0 auto; background: var(--ink3); border: 1px solid var(--line2);
  border-radius: 14px; padding: 22px; transition: .2s; line-height: 1.5; }
.lesson-uiux .hcard .a { font-size: 12px; color: var(--muted-d); }
.lesson-uiux .hcard .b { font-size: 22px; font-weight: 800; margin-top: 6px; letter-spacing: -.02em; }
.lesson-uiux .hcard .c { font-size: 14px; color: var(--muted); margin-top: 8px; line-height: 1.6; }
.lesson-uiux .hcard .d { font-size: 26px; font-weight: 800; color: var(--accent); margin-top: 14px; }
.lesson-uiux .hcard .e { display: inline-block; margin-top: 14px; background: var(--accent); color: var(--on-accent);
  font-weight: 700; font-size: 14.5px; padding: 11px 22px; border-radius: 10px; }
.lesson-uiux .demo.flat .hcard :is(.a, .b, .c, .d) { font-size: 15px; font-weight: 400; color: var(--text); margin-top: 8px; letter-spacing: 0; }
.lesson-uiux .demo.flat .hcard .e { background: none; border: 1px solid var(--line2); color: var(--text); font-weight: 400; padding: 8px 14px; }

/* 4강 — 근접성 */
.lesson-uiux .prox label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 4px; }
.lesson-uiux .prox input { width: 100%; max-width: 320px; background: var(--ink); border: 1px solid var(--line2);
  border-radius: 8px; padding: 9px 12px; color: var(--text); font-family: inherit; font-size: 14px; }
.lesson-uiux .prox .fld { margin-bottom: 22px; }
.lesson-uiux .demo.evenly .prox .fld { margin-bottom: 0; }
.lesson-uiux .demo.evenly .prox label { margin: 13px 0 13px; }

/* 6강 — 대비 */
.lesson-uiux .ctr-stage { display: flex; flex-direction: column; gap: 14px; }
.lesson-uiux .ctr-sample { padding: 16px 20px; border-radius: 12px; background: var(--ink3); font-size: 15.5px; }
.lesson-uiux .ctr-meta { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.lesson-uiux .ctr-lbl { font-size: 12.5px; color: var(--muted); }
.lesson-uiux .badge { font-weight: 800; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; }
.lesson-uiux .badge.ok { background: var(--mint-dim); color: var(--ok-fg); }
.lesson-uiux .badge.no { background: var(--t-bad); color: var(--bad); }
.lesson-uiux input[type=range] { accent-color: var(--accent); width: 100%; }

/* 9강 — 어포던스 */
.lesson-uiux .aff { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; justify-content: center; }
.lesson-uiux .btn-good { font-family: inherit; font-size: 14.5px; font-weight: 700; color: var(--on-accent); background: var(--accent);
  border: none; border-radius: 10px; padding: 12px 22px; cursor: pointer;
  box-shadow: 0 2px 0 rgba(0, 0, 0, .35); transition: transform .12s, box-shadow .12s, filter .2s; }
.lesson-uiux .btn-good:hover { filter: brightness(1.08); }
.lesson-uiux .btn-good:active { transform: translateY(2px); box-shadow: 0 0 0 rgba(0, 0, 0, .3); }
.lesson-uiux .btn-flat { font-family: inherit; font-size: 14.5px; color: var(--muted); background: none; border: none; cursor: pointer; }
.lesson-uiux .btn-dis { font-family: inherit; font-size: 14.5px; font-weight: 700; color: var(--dis-fg); background: var(--dis-bg);
  border: none; border-radius: 10px; padding: 12px 22px; cursor: not-allowed; }

/* 10강 — 피드백 */
.lesson-uiux .fb-btn { font-family: inherit; min-width: 150px; font-size: 14.5px; font-weight: 700; color: var(--on-accent); background: var(--accent);
  border: none; border-radius: 10px; padding: 12px 22px; cursor: pointer; transition: .2s; }
.lesson-uiux .fb-note { font-size: 12.5px; color: var(--muted-d); margin-top: 10px; text-align: center; line-height: 1.6; }
.lesson-uiux .fb-note.cap { padding: 0 16px 16px; margin-top: 0; }

/* 12강 — 터치 타깃 */
.lesson-uiux .fitts { display: flex; flex-direction: column; gap: 18px; align-items: center; }
.lesson-uiux .fitts-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.lesson-uiux .t-s, .lesson-uiux .t-l { font-family: inherit; border: 1px solid var(--line2); background: var(--ink3); color: var(--text);
  border-radius: 8px; cursor: pointer; padding: 0; }
.lesson-uiux .t-s { width: 26px; height: 26px; font-size: 11px; }
.lesson-uiux .t-l { width: 48px; height: 48px; font-size: 14px; }
.lesson-uiux .fitts-score { font-size: 13px; color: var(--muted); text-align: center; }
.lesson-uiux .fitts-score b { color: var(--accent); }

/* 표 */
.lesson-uiux .tbl-wrap { overflow-x: auto; }
.lesson-uiux table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 14px; }
.lesson-uiux th, .lesson-uiux td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line2); vertical-align: top; }
.lesson-uiux th { color: var(--muted); font-weight: 600; font-size: 12.5px; }
.lesson-uiux td b { color: var(--accent); }

/* 그림(인서트컷) — 만지는 데모와 달리 보는 그림 */
.lesson-uiux .fig-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 18px; }
@media (max-width: 560px) { .lesson-uiux .fig-duo { grid-template-columns: 1fr; } }
.lesson-uiux .pane { background: var(--ink3); border: 1px solid var(--line2); border-radius: 12px; padding: 16px; min-width: 0; line-height: 1.6; }
.lesson-uiux .L-tag { display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .06em; padding: 2px 9px; border-radius: 999px; margin-bottom: 12px; }
.lesson-uiux .L-tag.no { background: var(--t-bad); color: var(--bad); }
.lesson-uiux .L-tag.ok { background: var(--mint-dim); color: var(--ok-fg); }
.lesson-uiux .fig-solo { padding: 18px; }
.lesson-uiux .sk { background: var(--sk); border-radius: 4px; height: 9px; margin-top: 9px; }
.lesson-uiux .sk.hl { background: var(--accent); }
.lesson-uiux .frow { display: flex; gap: 6px; align-items: center; margin-top: 9px; }
.lesson-uiux .frow .sk { margin-top: 0; }
.lesson-uiux .jrow { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted-d); }
.lesson-uiux .j { border: 1px solid var(--line2); border-radius: 999px; padding: 4px 11px; background: var(--ink3); color: var(--muted); font-size: 12px; white-space: nowrap; }
.lesson-uiux .j.on { border-color: var(--accent); color: var(--accent); font-weight: 700; }
.lesson-uiux .L-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--dotc); flex-shrink: 0; }
.lesson-uiux .L-dot.sq { border-radius: 2px; }
.lesson-uiux .L-dot.mint { background: var(--accent); }
.lesson-uiux .g-tile { background: var(--ink3); border: 1px solid var(--line2); border-radius: 12px; padding: 14px; overflow: hidden; min-width: 0; }
.lesson-uiux .g-cap { font-size: 11px; color: var(--muted-d); margin-top: 10px; line-height: 1.6; }
.lesson-uiux .g-cap b { color: var(--text); }
.lesson-uiux .mini-btn { display: inline-block; font-size: 12px; font-weight: 700; border-radius: 8px; padding: 8px 14px; background: var(--ink); border: 1px solid var(--line2); color: var(--muted); line-height: 1.4; }
.lesson-uiux .mini-btn.L-hero { background: var(--accent); color: var(--on-accent); border: 1px solid transparent; }
.lesson-uiux .mini-btn.danger { background: var(--t-bad); color: var(--bad); border: 1px solid var(--t-bad-line); }
.lesson-uiux .fun { height: 28px; background: var(--mint-dim); border: 1px solid var(--line); border-radius: 7px; display: flex; align-items: center; gap: 8px; padding: 0 10px; font-size: 12px; color: var(--text); white-space: nowrap; margin-top: 8px; }
.lesson-uiux .fun b { color: var(--accent); }
.lesson-uiux .phone { width: 172px; border: 2px solid var(--line2); border-radius: 26px; padding: 10px; margin: 0 auto; background: var(--ink); }
.lesson-uiux .phone .scr { border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; height: 256px; }
.lesson-uiux .zone { display: flex; align-items: center; justify-content: center; text-align: center; font-size: 11px; line-height: 1.5; padding: 6px; }
.lesson-uiux .zone.far { flex: 0 0 34%; background: var(--t-bad); color: var(--bad); }
.lesson-uiux .zone.mid { flex: 0 0 22%; background: var(--t-warn); color: var(--warn); }
.lesson-uiux .zone.home { flex: 1; background: var(--mint-dim); color: var(--ok-fg); font-weight: 700; }
.lesson-uiux .modal { background: var(--ink); border: 1px solid var(--line2); border-radius: 12px; padding: 14px; font-size: 13px; line-height: 1.6; }
.lesson-uiux .modal .mb { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.lesson-uiux .ratio { display: flex; height: 32px; border-radius: 8px; overflow: hidden; font-size: 11.5px; font-weight: 800; color: var(--on-accent); text-align: center; margin-top: 4px; }
.lesson-uiux .ratio > div { display: flex; align-items: center; justify-content: center; }
.lesson-uiux .ratio .r1 { flex: 3; background: var(--mint-72); }
.lesson-uiux .ratio .r2 { flex: 3; background: var(--mint-86); }
.lesson-uiux .ratio .r3 { flex: 4; background: var(--accent); }
.lesson-uiux .cost { margin-top: 14px; height: 10px; border-radius: 6px; opacity: .6; background: linear-gradient(90deg, var(--accent), var(--warn), var(--bad)); }
.lesson-uiux .outro { margin-top: 40px; padding: 24px 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--ink2); }
.lesson-uiux .outro b { color: var(--accent); }

/* 23강 — 모션 속도 */
.lesson-uiux .mo { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.lesson-uiux .m-card { width: 118px; padding: 16px 10px; background: var(--ink3); border: 1px solid var(--line2); font-family: inherit;
  border-radius: 12px; cursor: pointer; text-align: center; font-size: 12px; color: var(--muted); user-select: none; line-height: 1.5; }
.lesson-uiux .m-card .chk { display: block; font-size: 26px; margin-bottom: 8px; opacity: 0; transform: scale(.4); color: var(--accent); }
.lesson-uiux .m-card.on .chk { opacity: 1; transform: scale(1); }
.lesson-uiux .m-card b { color: var(--text); display: block; margin-top: 2px; font-size: 13px; }
.lesson-uiux .m-card[data-d="220"] .chk { transition: all .22s cubic-bezier(.2, .7, .2, 1); }
.lesson-uiux .m-card[data-d="900"] .chk { transition: all .9s ease; }

/* 24강 — 인라인 검증 */
.lesson-uiux .vf label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 5px; }
.lesson-uiux .vf input { width: 100%; max-width: 340px; background: var(--ink); border: 1px solid var(--line2);
  border-radius: 8px; padding: 10px 12px; color: var(--text); font-family: inherit; font-size: 15px; }
.lesson-uiux .vf input.L-bad { border-color: var(--bad); }
.lesson-uiux .vf input.L-good { border-color: var(--accent); }
.lesson-uiux .vf .msg { font-size: 12.5px; margin-top: 7px; min-height: 18px; }
.lesson-uiux .vf .msg.L-bad { color: var(--bad); }
.lesson-uiux .vf .msg.L-good { color: var(--accent); }

/* 26강 — 비밀번호 보기 */
.lesson-uiux .pw { display: flex; gap: 8px; max-width: 340px; }
.lesson-uiux .pw input { flex: 1; min-width: 0; background: var(--ink); border: 1px solid var(--line2); border-radius: 8px;
  padding: 10px 12px; color: var(--text); font-family: inherit; font-size: 15px; }
.lesson-uiux .pw button { font-family: inherit; font-size: 12.5px; font-weight: 700; background: none; border: 1px solid var(--line);
  color: var(--muted); border-radius: 8px; padding: 0 14px; cursor: pointer; min-height: 44px; }
.lesson-uiux .pw button:hover { color: var(--accent); border-color: var(--accent); }

/* 표지 — 점검표 */
.lesson-uiux .ck { margin-top: 6px; display: flex; flex-direction: column; gap: 2px; }
.lesson-uiux .ck .g { font-size: 11.5px; letter-spacing: .2em; color: var(--accent); font-weight: 700; margin: 18px 0 6px; }
.lesson-uiux .ck label { display: flex; gap: 11px; align-items: flex-start; padding: 8px 10px; border-radius: 10px;
  font-size: 14.5px; color: var(--text-prose); cursor: pointer; line-height: 1.6; }
.lesson-uiux .ck label:hover { background: var(--mint-dim); }
.lesson-uiux .ck input { width: 17px; height: 17px; accent-color: var(--accent); margin-top: 3px; flex-shrink: 0; }
.lesson-uiux .ck input:checked + span { color: var(--muted-d); }
.lesson-uiux .ck-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 20px; }
.lesson-uiux .ck-count { font-size: 13px; color: var(--muted); }
.lesson-uiux .ck-count b { color: var(--accent); font-size: 17px; }
.lesson-uiux .ck-reset { font-family: inherit; font-size: 12px; background: none; border: 1px solid var(--line2);
  color: var(--muted-d); border-radius: 999px; padding: 5px 12px; cursor: pointer; min-height: 32px; }
.lesson-uiux .ck-reset:hover { color: var(--bad); border-color: var(--bad); }