/* COS Pro 2급 스터디 전용 스타일 — 사이트 공통 style.css 변수를 사용하고, .cp 안에서만 적용됩니다. */
.cp { max-width: 1180px; margin: 0 auto; padding: 44px 24px 70px; color: var(--ink); line-height: 1.7; }
.cp *, .cp *::before, .cp *::after { box-sizing: border-box; }
.cp p { color: var(--ink-2); margin: 0 0 12px; }
.cp button, .cp input, .cp textarea { font: inherit; }
.cp button { cursor: pointer; }
.cp button:disabled { opacity: .45; cursor: not-allowed; }

.cp-crumb { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; }
.cp-crumb a { color: var(--brand-ink); text-decoration: none; font-weight: 600; }
.cp-crumb a:hover { text-decoration: underline; }

.cp-hero { display: grid; grid-template-columns: 1.5fr 1fr; gap: 36px; margin-bottom: 34px; align-items: start; }
.cp-eyebrow { font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--brand-ink); }
.cp-hero h1 { font-size: clamp(30px, 4.6vw, 52px); line-height: 1.25; letter-spacing: -1.5px; margin: 14px 0; color: var(--ink); }
.cp-pill { display: inline-block; font-size: 12px; font-weight: 600; background: var(--brand-tint); color: var(--brand-ink); padding: 5px 14px; border-radius: var(--radius-pill); margin: 0 6px 6px 0; }

.cp-panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-sm); }
.cp-schedule { background: var(--dark); border-color: var(--dark); color: #fff; }
.cp-schedule p { color: var(--dark-2); }
.cp-schedule b { color: var(--dark-brand); }
.cp-row { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid rgba(255, 255, 255, .14); font-size: 14px; }
.cp-row:last-child { border-bottom: 0; }

.cp-layout { display: grid; grid-template-columns: 270px 1fr; gap: 24px; }
.cp-side { align-self: start; position: sticky; top: 20px; }
.cp-note { font-size: 13px; color: var(--ink-3) !important; }
.cp-progress { height: 7px; border-radius: 5px; background: var(--line); overflow: hidden; margin-bottom: 14px; }
.cp-progress div { height: 100%; background: var(--brand); transition: width .25s ease; }

.cp-list { display: flex; flex-direction: column; gap: 4px; }
.cp-list button { display: block; width: 100%; text-align: left; border: 0; background: transparent; color: var(--ink); padding: 11px 12px; border-radius: 12px; font-size: 14px; }
.cp-list button:hover { background: var(--bg-soft); }
.cp-list button.active { background: var(--brand); color: #fff; }
.cp-list small { display: block; opacity: .75; font-size: 12px; }

.cp-btn { border-radius: 10px; padding: 10px 18px; font-weight: 600; font-size: 14px; border: 1px solid var(--line); background: var(--bg-soft); color: var(--ink); }
.cp-btn:hover:not(:disabled) { background: var(--line-soft); }
.cp-btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.cp-btn.primary:hover:not(:disabled) { background: var(--brand-deep); }

.cp-tag { display: inline-block; background: var(--brand-tint); color: var(--brand-ink); padding: 4px 12px; border-radius: 8px; font-size: 12px; font-weight: 700; }
.cp-q h2 { font-size: 26px; margin: 12px 0 10px; line-height: 1.35; }
.cp-q h3 { font-size: 17px; margin: 24px 0 6px; }
.cp-q pre, .cp-sol pre { background: #232823; color: #e6efe6; padding: 18px; border-radius: 12px; overflow: auto; font: 14px/1.8 ui-monospace, "Cascadia Mono", Consolas, monospace; white-space: pre-wrap; margin: 8px 0 12px; }
.cp textarea { width: 100%; min-height: 190px; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 14px; font: 14px/1.7 ui-monospace, "Cascadia Mono", Consolas, monospace; color: var(--ink); resize: vertical; }
.cp textarea:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
.cp textarea.memo { min-height: 90px; }
.cp details { border: 1px solid var(--line); padding: 12px 16px; border-radius: 10px; margin: 12px 0; background: var(--surface); }
.cp summary { cursor: pointer; font-weight: 700; color: var(--ink); }
.cp details[open] summary { margin-bottom: 8px; }
.cp-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 16px 0; }
.cp-actions label { font-size: 14px; color: var(--ink-2); display: inline-flex; gap: 6px; align-items: center; }
.cp-status { font-size: 13px; color: var(--brand-ink); }

.cp-timer { font-variant-numeric: tabular-nums; font-size: 34px; font-weight: 700; margin: 4px 0 8px; color: var(--ink); }
.cp-side hr { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }

.cp-review { margin-top: 24px; }
.cp-review h2 { font-size: 22px; margin: 0 0 12px; }
.cp-check label { display: flex; gap: 8px; margin: 8px 0; color: var(--ink-2); font-size: 15px; align-items: flex-start; }
.cp-check input { margin-top: 6px; }

.cp-series { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.cp-series a { text-decoration: none; }
.cp-series .cp-btn { display: inline-block; }

/* 잠긴 회차 */
.cp-lock { max-width: 640px; margin: 10px auto 0; text-align: center; padding: 40px 28px; }
.cp-lock h1 { font-size: clamp(24px, 4vw, 34px); line-height: 1.35; letter-spacing: -1px; margin: 12px 0 10px; color: var(--ink); }
.cp-lock-form { display: flex; gap: 10px; justify-content: center; margin: 22px 0 12px; flex-wrap: wrap; }
.cp-lock-form input { flex: 1 1 220px; max-width: 320px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font: inherit; background: var(--bg); color: var(--ink); }
.cp-lock-form input:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
.cp-remember { display: inline-flex; gap: 6px; align-items: center; font-size: 13px; color: var(--ink-3); margin-bottom: 8px; }
.cp-lock-msg { min-height: 24px; font-size: 14px; color: var(--brand-ink) !important; margin: 4px 0 14px; }
.cp-lock .cp-note a { color: var(--brand-ink); font-weight: 600; }

/* 목록 페이지 */
.cp-intro { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.cp-intro h1 { font-size: clamp(28px, 4.2vw, 44px); letter-spacing: -1px; line-height: 1.3; margin: 12px 0 14px; }
.cp-lessons { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.cp-lesson-card { display: flex; flex-direction: column; gap: 6px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); text-decoration: none; color: var(--ink); transition: box-shadow .2s ease, transform .2s ease; }
.cp-lesson-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.cp-lesson-card .no { font-size: 13px; font-weight: 700; color: var(--brand-ink); letter-spacing: 1px; }
.cp-lesson-card h2 { font-size: 19px; margin: 2px 0; line-height: 1.4; }
.cp-lesson-card p { margin: 0; font-size: 14px; }
.cp-lesson-card .meta { margin-top: 8px; font-size: 13px; color: var(--ink-3); }
.cp-lesson-card .go { margin-top: 10px; font-weight: 700; color: var(--brand-ink); font-size: 14px; }
.cp-lesson-card .lockbadge { align-self: flex-start; font-size: 12px; font-weight: 700; background: var(--bg-soft); color: var(--ink-2); padding: 3px 10px; border-radius: var(--radius-pill); border: 1px solid var(--line); }
.cp-lesson-card .openbadge { align-self: flex-start; font-size: 12px; font-weight: 700; background: var(--brand-tint); color: var(--brand-ink); padding: 3px 10px; border-radius: var(--radius-pill); }
.cp-lesson-card.soon { background: var(--bg-soft); border-style: dashed; box-shadow: none; }
.cp-lesson-card.soon:hover { transform: none; box-shadow: none; }
.cp-lesson-card.soon h2 { color: var(--ink-2); }

@media (max-width: 780px) {
  .cp { padding: 26px 16px 50px; }
  .cp-hero, .cp-layout { grid-template-columns: 1fr; }
  .cp-side { position: static; }
  .cp-list { display: grid; grid-template-columns: 1fr 1fr; }
}

@media print {
  header, footer, .cp-side, .cp-hero, .cp-actions, .cp-series, .cp-crumb, .cp textarea { display: none !important; }
  .cp { padding: 0; }
  .cp-panel { border: 0; padding: 0; box-shadow: none; }
  .cp details > * { display: block; }
  .cp-q pre, .cp-sol pre { background: #eee; color: #000; }
}