/* class.oyppcreative.com — A안 「큰 글자가 곧 버튼」 하이파이 v1
   흰 바탕 · 산세리프 · 모서리 0 · 그림자 0 · 회색 상자 0 · 위계는 크기로 · 선은 가는 선과 진한 선 두 가지 */

:root {
  --bg: #ffffff;
  --ink: #1d1d1f;
  --sub: #6e6e73;
  --line: #d2d2d7;
  --mute: #aeaeb2;
  --alert: #b3261e;
  --gutter: clamp(16px, 4.4vw, 64px);
  --max: 1440px;
  --t-display: clamp(46px, 13vw, 156px);
  --t-hero: clamp(32px, 6.8vw, 84px);
  --t-h2: clamp(24px, 3.6vw, 40px);
  --t-lead: clamp(19px, 1.9vw, 26px);
  --t-body: 17px;
  --t-small: 14px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Apple SD Gothic Neo", "Pretendard Variable", Pretendard, "Noto Sans KR", sans-serif;
  font-size: var(--t-body);
  line-height: 1.6;
  letter-spacing: -.01em;
  word-break: keep-all;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--ink); color: #fff; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
:focus { outline: none; }
:focus-visible { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 5px; }
img { max-width: 100%; display: block; }

/* 머리줄 · 바닥줄 */
header[data-part="site"] {
  max-width: var(--max); margin: 0 auto;
  padding: calc(16px + env(safe-area-inset-top)) var(--gutter) 16px;
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  font-size: var(--t-small); font-weight: 600;
}
header[data-part="site"] a:last-child { color: var(--sub); font-weight: 500; }
@media (hover: hover) { header[data-part="site"] a:hover { color: var(--ink); } }

main { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter) 128px; }

footer[data-part="site-footer"] {
  max-width: var(--max); margin: 0 auto;
  padding: 28px var(--gutter) calc(40px + env(safe-area-inset-bottom));
  display: flex; flex-wrap: wrap; gap: 8px 22px;
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--sub);
}
@media (hover: hover) { footer[data-part="site-footer"] a:hover { color: var(--ink); } }

/* 공통 제목 */
h1 {
  margin: clamp(36px, 8vw, 112px) 0 0;
  font-size: var(--t-hero); line-height: 1.08; font-weight: 600; letter-spacing: -.035em;
}
h2 {
  margin: clamp(64px, 9vw, 120px) 0 18px;
  font-size: var(--t-h2); line-height: 1.15; font-weight: 600; letter-spacing: -.025em;
}

/* 홈 — 인사말 + 과정 이름이 곧 버튼 */
main:has(> [data-part="pages"]) [data-part="intro"] p {
  margin-top: 14px; max-width: 36em;
  font-size: var(--t-lead); line-height: 1.45; letter-spacing: -.02em; color: var(--sub);
}
[data-part="pages"] ol { list-style: none; margin: clamp(56px, 10vw, 140px) 0 0; padding: 0; border-bottom: 1px solid var(--ink); }
[data-part="pages"] li a {
  display: grid; grid-template-columns: 1fr auto; grid-template-areas: "meta meta" "title arrow";
  column-gap: 16px; padding: 12px 0 clamp(14px, 2vw, 26px);
  border-top: 1px solid var(--ink);
  transition: color .3s var(--ease);
}
[data-part="pages"] [data-part="meta"] { grid-area: meta; font-size: var(--t-small); color: var(--sub); letter-spacing: -.005em; }
[data-part="pages"] [data-part="title"] {
  grid-area: title; font-size: var(--t-display); line-height: .98; font-weight: 600; letter-spacing: -.045em;
}
[data-part="pages"] li a::after {
  content: "→"; grid-area: arrow; align-self: end;
  font-size: calc(var(--t-display) * .6); line-height: 1.12; font-weight: 300;
  transition: transform .35s var(--ease);
}
@media (hover: hover) {
  [data-part="pages"] ol:hover li a { color: var(--mute); }
  [data-part="pages"] ol li a:hover { color: var(--ink); }
  [data-part="pages"] li a:hover::after { transform: translateX(.14em); }
}

/* 과정 페이지 — 한 장: 소개 → 요약 → 신청 순서 → 날짜 → 시간 → 신청서 → 신청 */
main:has(> form[data-part="apply"]) [data-part="intro"] h1 { font-size: var(--t-display); line-height: .98; letter-spacing: -.045em; }
main:has(> form[data-part="apply"]) [data-part="intro"] p {
  margin-top: 18px; max-width: 22em;
  font-size: var(--t-lead); line-height: 1.42; letter-spacing: -.02em;
}
[data-part="summary"] dl {
  display: grid; grid-template-columns: minmax(6.5em, 9em) 1fr;
  margin: clamp(36px, 6vw, 72px) 0 0; border-bottom: 1px solid var(--line);
}
[data-part="summary"] dt, [data-part="summary"] dd { margin: 0; padding: 14px 0 15px; border-top: 1px solid var(--line); }
[data-part="summary"] dt { color: var(--sub); font-size: var(--t-small); padding-top: 17px; }
[data-part="summary"] dd { font-size: var(--t-body); }
main:has(> form[data-part="apply"]) [data-part="summary"] dd:nth-of-type(3) { font-size: 24px; font-weight: 600; letter-spacing: -.02em; line-height: 1.3; }

[data-part="steps"] ol { list-style: none; margin: 0; padding: 0; counter-reset: step; }
[data-part="steps"] li {
  counter-increment: step; position: relative;
  padding: 18px 0 20px 3.4em; border-top: 1px solid var(--line);
  font-size: var(--t-body); line-height: 1.5;
}
[data-part="steps"] li::before {
  content: counter(step); position: absolute; left: 0; top: 12px;
  font-size: 40px; line-height: 1; font-weight: 600; letter-spacing: -.04em;
}

[data-part="dates"] ol {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 9.5em), 1fr));
  border-top: 1px solid var(--line);
}
[data-part="dates"] li a {
  display: block; padding: 14px 0 15px; border-bottom: 1px solid var(--line);
  font-size: var(--t-body); font-variant-numeric: tabular-nums;
}
[data-part="dates"] a[aria-current] { font-weight: 700; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }
@media (hover: hover) { [data-part="dates"] li a:hover { text-decoration: underline; text-underline-offset: 6px; } }
[data-part="dates"] > p, [data-part="note"] { margin-top: 14px; color: var(--sub); font-size: var(--t-small); }

form[data-part="apply"] fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
form[data-part="apply"] legend { padding: 0; }

[data-part="times"] legend { font-size: var(--t-small); color: var(--sub); margin-bottom: 8px; }
[data-part="times"] label {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 15px 0; border-top: 1px solid var(--line);
  font-size: 19px; font-variant-numeric: tabular-nums; cursor: pointer;
}
[data-part="times"] label:last-of-type { border-bottom: 1px solid var(--line); }
[data-part="times"] label:has(:checked) { font-weight: 700; }
[data-part="times"] > p { color: var(--sub); }

input[type="radio"], input[type="checkbox"] {
  appearance: none; -webkit-appearance: none; flex: none; margin: 0;
  width: 14px; height: 14px; border: 1.5px solid var(--ink); background: transparent; cursor: pointer;
}
input[type="radio"] { border-radius: 50%; }
input[type="radio"]:checked, input[type="checkbox"]:checked { background: var(--ink); }
input[type="radio"]:checked { box-shadow: inset 0 0 0 2.5px var(--bg); }
[data-part="times"] input[type="radio"] { order: 2; }

[data-part="form"] { margin-top: clamp(64px, 9vw, 120px); }
[data-part="form"] > fieldset + fieldset { margin-top: 40px; }
[data-part="form"] legend { font-size: var(--t-body); font-weight: 600; letter-spacing: -.02em; margin-bottom: 4px; }
[data-part="form"] fieldset > p { color: var(--sub); font-size: var(--t-small); margin-bottom: 8px; }
[data-part="form"] fieldset:first-child > label { display: block; margin-top: 18px; font-size: var(--t-small); color: var(--sub); }
[data-part="form"] label:has(> input[type="radio"]),
[data-part="form"] label:has(> input[type="checkbox"]) {
  display: flex; align-items: center; gap: 12px; padding: 9px 0; font-size: 16px; cursor: pointer;
}
[data-part="form"] label:has(> input[type="radio"]:checked) { font-weight: 600; }

input[type="text"], input[type="tel"], input[type="email"], input:not([type]), textarea, select {
  appearance: none; -webkit-appearance: none;
  display: block; width: 100%; margin: 4px 0 0; padding: 10px 0 11px;
  border: 0; border-bottom: 1px solid var(--ink); border-radius: 0; background: transparent;
  font: inherit; font-size: 20px; line-height: 1.4; color: var(--ink); letter-spacing: -.015em;
}
textarea { min-height: 96px; resize: vertical; }
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%231d1d1f' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 2px center; padding-right: 24px;
}
input:focus-visible, textarea:focus-visible, select:focus-visible { text-decoration: none; border-bottom-width: 2px; padding-bottom: 10px; }
::placeholder { color: var(--mute); }

[data-part="form"] details { margin: 6px 0 4px; }
[data-part="form"] summary { display: inline; list-style: none; cursor: pointer; font-size: var(--t-small); color: var(--sub); text-decoration: underline; text-underline-offset: 4px; }
[data-part="form"] summary::-webkit-details-marker { display: none; }
[data-part="form"] details[open] { margin-bottom: 10px; }
[data-part="form"] details p { margin-top: 8px; font-size: var(--t-small); line-height: 1.6; color: var(--sub); }
[data-part="form"] details b { color: var(--ink); font-weight: 600; margin-right: 6px; }

[role="alert"] { display: block; margin-top: 8px; color: var(--alert); font-size: var(--t-small); font-weight: 500; }
p[data-part="error"] { margin-top: 40px; }

button, [data-part="cta"] a {
  appearance: none; -webkit-appearance: none;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  width: 100%; min-height: 64px; margin-top: 44px; padding: 0 22px;
  border: 0; border-radius: 0; background: var(--ink); color: #fff;
  font: inherit; font-size: 18px; font-weight: 600; letter-spacing: -.015em; text-align: left; cursor: pointer;
  transition: background .25s var(--ease);
}
button::after, [data-part="cta"] a::after { content: "→"; font-weight: 300; font-size: 22px; transition: transform .35s var(--ease); }
@media (hover: hover) { button:hover::after, [data-part="cta"] a:hover::after { transform: translateX(4px); } }
button:disabled { background: var(--line); cursor: not-allowed; }
button:disabled::after { content: ""; }
button:focus-visible, [data-part="cta"] a:focus-visible { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 5px; }

/* 과정 페이지 — 넓은 화면은 두 칸 */
@media (min-width: 1024px) {
  main:has(> form[data-part="apply"]) {
    display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); column-gap: clamp(48px, 6vw, 112px); align-items: start;
  }
  main:has(> form[data-part="apply"]) > [data-part="intro"] { grid-column: 1; }
  main:has(> form[data-part="apply"]) > [data-part="summary"] { grid-column: 2; margin-top: clamp(36px, 8vw, 112px); }
  main:has(> form[data-part="apply"]) > [data-part="summary"] dl { margin-top: 0; }
  main:has(> form[data-part="apply"]) > [data-part="steps"],
  main:has(> form[data-part="apply"]) > [data-part="error"] { grid-column: 1 / -1; }
  [data-part="steps"] ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 32px; }
  main:has(> form[data-part="apply"]) > [data-part="dates"] { grid-column: 1; position: sticky; top: 24px; }
  main:has(> form[data-part="apply"]) > form[data-part="apply"] { grid-column: 2; }
  main:has(> form[data-part="apply"]) > form [data-part="times"] h2 { margin-top: clamp(64px, 9vw, 120px); }
}

/* 완료 — 지금 일 / 다음 일 */
main:has(> [data-part="actions"]) [data-part="intro"] h1 { margin-bottom: 0; }
[data-part="sub"] { font-size: var(--t-hero); line-height: 1.08; font-weight: 600; letter-spacing: -.035em; color: var(--mute); }
main:has(> [data-part="actions"]) [data-part="summary"] dd:nth-of-type(2) { font-size: 24px; font-weight: 600; letter-spacing: -.02em; line-height: 1.3; }
[data-part="actions"] { list-style: none; margin: 36px 0 0; padding: 0; }
[data-part="actions"] li a {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding: 18px 0 12px; border-bottom: 1px solid var(--ink);
  font-size: clamp(19px, 2vw, 24px); font-weight: 600; letter-spacing: -.02em;
}
[data-part="actions"] li a::after { content: "→"; font-weight: 300; transition: transform .35s var(--ease); }
@media (hover: hover) { [data-part="actions"] li a:hover::after { transform: translateX(4px); } }

/* 내 수업 — 남은 회차 */
main:has(> [data-part="count"]) [data-part="intro"] h1 { font-size: var(--t-h2); line-height: 1.2; letter-spacing: -.025em; }
main:has(> [data-part="count"]) [data-part="intro"] p { margin-top: 4px; color: var(--sub); }
[data-part="count"] { margin-top: 20px; }
[data-part="big"] { font-size: clamp(132px, 36vw, 300px); line-height: .86; font-weight: 600; letter-spacing: -.06em; font-variant-numeric: tabular-nums; }
[data-part="count"] > p:not([data-part]) { margin-top: 12px; color: var(--sub); }
[data-part="segments"] { list-style: none; margin: 16px 0 0; padding: 0; display: flex; gap: 4px; max-width: 560px; }
[data-part="segments"] li { flex: 1; height: 8px; background: var(--line); }
[data-part="segments"] li[data-state="done"] { background: var(--ink); }
[data-part="segments"] li[data-state="booked"] { background: var(--sub); }
main:has(> [data-part="count"]) > dl[data-part="summary"] {
  display: grid; grid-template-columns: minmax(6.5em, 9em) 1fr; margin: 40px 0 0; border-bottom: 1px solid var(--line);
}
main:has(> [data-part="count"]) > dl[data-part="summary"] dt,
main:has(> [data-part="count"]) > dl[data-part="summary"] dd { margin: 0; padding: 13px 0 14px; border-top: 1px solid var(--line); }
main:has(> [data-part="count"]) > dl[data-part="summary"] dt { color: var(--sub); font-size: var(--t-small); padding-top: 16px; }
[data-part="upcoming"] ul, [data-part="past"] ul { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--line); }
[data-part="upcoming"] li, [data-part="past"] li { padding: 13px 0 14px; border-top: 1px solid var(--line); font-variant-numeric: tabular-nums; }
[data-part="upcoming"] a { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }
[data-part="past"] li { color: var(--sub); }

/* 안내 · 규정 · 자주 묻는 질문 · 개인정보 */
main > dl {
  display: grid; grid-template-columns: 1fr; margin: clamp(36px, 6vw, 72px) 0 0; border-bottom: 1px solid var(--line);
}
main > dl dt { margin: 0; padding: 20px 0 0; border-top: 1px solid var(--line); font-weight: 600; letter-spacing: -.02em; font-size: 19px; }
main > dl dd { margin: 0; padding: 8px 0 22px; color: var(--ink); max-width: 40em; }
@media (min-width: 900px) {
  main > dl { grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); column-gap: 48px; }
  main > dl dt, main > dl dd { padding-top: 20px; padding-bottom: 22px; border-top: 1px solid var(--line); }
}
main > p { margin-top: 14px; max-width: 40em; }
table { width: 100%; margin-top: 40px; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 13px 16px 14px 0; border-top: 1px solid var(--line); text-align: left; vertical-align: top; font-size: 15px; font-weight: 400; }
tr:last-child th, tr:last-child td { border-bottom: 1px solid var(--line); }
th { font-weight: 600; white-space: nowrap; }
@media (max-width: 640px) {
  table, tbody, tr, th, td { display: block; }
  th { padding-bottom: 4px; }
  td { border-top: 0; padding: 2px 0; color: var(--sub); }
  tr { border-top: 1px solid var(--line); padding: 10px 0 12px; }
  th, td { border: 0; }
  tr:last-child { border-bottom: 1px solid var(--line); }
}

/* 남는 기본 요소 */
ul, ol { padding-left: 1.2em; }
section > p + p { margin-top: 8px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }

/* 동의 칸 — 체크 한 줄 + 전문 보기 (질문 제목은 화면에서 숨기고 읽기 프로그램에만) */
[data-part="form"] fieldset:has(> details) > legend {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
[data-part="form"] fieldset:has(> details) { margin-top: 18px; }
[data-part="form"] fieldset:has(> details) + fieldset:has(> details) { margin-top: 6px; }
[data-part="form"] fieldset:has(> details) > details { margin: 0 0 0 26px; }

/* 홈 — 인사말 위 작은 줄 */
[data-part="tagline"] { margin-top: clamp(36px, 8vw, 112px); font-size: var(--t-small); font-weight: 600; letter-spacing: -.005em; }
[data-part="tagline"] + h1 { margin-top: 14px; }
main:has(> [data-part="pages"]) [data-part="intro"] [data-part="tagline"] { color: var(--ink); font-size: var(--t-small); margin-top: clamp(36px, 8vw, 112px); }