/* CHOI-JUNE-LUMO-NE · 자기 결로 서는 예술가의 자리
 * 흰 여백의 결 · 얇은 세리프 · 조용한 밝음 · 얕은 회청
 * 두 결이 나란히 · 그러나 다른 결로
 */

:root {
  --bg: #FAFAFA;
  --bg-alt: #F3F1EC;
  --ink: #1F1F1F;
  --ink-soft: #5A5A5A;
  --ink-quiet: #8A8A8A;
  --accent: #4A5D6E;
  --accent-soft: #7B8B99;
  --line: #E5E3DE;
  --line-soft: #EFEDE8;
  --serif-en: 'Cormorant Garamond', 'Noto Serif KR', serif;
  --serif-ko: 'Noto Serif KR', 'Cormorant Garamond', serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif-ko);
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.01em;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--ink);
}

/* Header */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
}

.brand-mark {
  color: var(--accent);
}

.brand-name {
  font-family: var(--serif-en);
  font-weight: 500;
  font-size: 17px;
  letter-spacing: 0.06em;
  line-height: 1.1;
}

.brand-sub {
  font-size: 11px;
  color: var(--ink-quiet);
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.site-nav {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 14px;
  letter-spacing: 0.05em;
  position: relative;
  padding-bottom: 4px;
}

.site-nav a.active {
  color: var(--ink);
}

.site-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
}

.site-nav a:hover {
  color: var(--ink);
}

/* Hero */
.hero {
  padding: 120px 40px 100px;
  background: var(--bg);
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: var(--serif-en);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 40px;
}

.hero-title {
  font-family: var(--serif-ko);
  font-weight: 400;
  font-size: clamp(36px, 5.5vw, 68px);
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}

.hero-lead {
  font-family: var(--serif-ko);
  font-weight: 300;
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: 72px;
  max-width: 720px;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.meta-label {
  font-size: 11px;
  color: var(--ink-quiet);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
  font-family: var(--serif-en);
}

.meta-value {
  font-size: 15px;
  color: var(--ink);
  line-height: 1.6;
}

/* Sections */
.section {
  padding: 100px 40px;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-inner.narrow {
  max-width: 780px;
}

.section-eyebrow {
  font-family: var(--serif-en);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.section-title {
  font-family: var(--serif-ko);
  font-weight: 400;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 48px;
  letter-spacing: -0.005em;
}

/* Prose */
.prose {
  background: var(--bg-alt);
}

.prose p {
  font-family: var(--serif-ko);
  font-weight: 300;
  font-size: 18px;
  line-height: 1.9;
  color: var(--ink);
  margin-bottom: 28px;
  letter-spacing: 0.005em;
}

/* Rooms */
.rooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.room-card {
  background: var(--bg);
  padding: 56px 40px;
  color: var(--ink);
  transition: background 0.4s ease;
  display: block;
}

.room-card:hover {
  background: var(--bg-alt);
  color: var(--ink);
}

.room-number {
  font-family: var(--serif-en);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 24px;
}

.room-name {
  font-family: var(--serif-ko);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 16px;
}

.room-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* Signature */
.signature-section {
  background: var(--bg);
  padding: 100px 40px;
  border-top: 1px solid var(--line);
}

.signature-block {
  text-align: center;
  font-family: var(--serif-en);
  font-weight: 300;
  color: var(--ink-soft);
}

.sig-line {
  font-size: 15px;
  line-height: 2;
  letter-spacing: 0.03em;
}

.sig-lumo {
  font-family: var(--serif-en);
  font-weight: 500;
  font-size: 16px;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-top: 24px;
}

/* Footer */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
  padding: 72px 40px 40px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 48px;
}

.footer-col {
  font-size: 14px;
}

.footer-title {
  font-family: var(--serif-en);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 10px;
}

.footer-sub {
  color: var(--ink-quiet);
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 4px;
}

.footer-label {
  font-family: var(--serif-en);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-quiet);
  text-transform: uppercase;
  margin-bottom: 6px;
  margin-top: 10px;
}

.footer-label:first-child {
  margin-top: 0;
}

.footer-value {
  color: var(--ink-soft);
  font-size: 13px;
  margin-bottom: 6px;
}

.footer-link {
  display: block;
  color: var(--accent);
  font-size: 13px;
  line-height: 1.8;
  padding: 4px 0;
}

.footer-link:hover {
  color: var(--ink);
}

.footer-bottom {
  max-width: 1200px;
  margin: 56px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-quiet);
  text-align: center;
  letter-spacing: 0.02em;
}

/* Works Page */
.works-empty {
  text-align: center;
  padding: 120px 40px;
  border: 1px solid var(--line);
  background: var(--bg-alt);
  margin-top: 40px;
}

.empty-mark {
  font-family: var(--serif-en);
  font-size: 60px;
  color: var(--accent-soft);
  font-weight: 300;
  line-height: 1;
  margin-bottom: 32px;
}

.empty-title {
  font-family: var(--serif-ko);
  font-weight: 400;
  font-size: 26px;
  color: var(--ink);
  margin-bottom: 20px;
}

.empty-lead {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 auto;
}

/* Letters list */
.letters-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 40px;
}

.letter-item {
  background: var(--bg);
  padding: 40px;
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 32px;
  align-items: center;
  color: var(--ink);
  transition: background 0.4s ease;
}

.letter-item:hover {
  background: var(--bg-alt);
}

.letter-num {
  font-family: var(--serif-en);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.letter-title {
  font-family: var(--serif-ko);
  font-weight: 400;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink);
}

.letter-date {
  font-family: var(--serif-en);
  font-size: 13px;
  color: var(--ink-quiet);
  letter-spacing: 0.05em;
}

/* Sister page */
.sister-hero {
  padding: 80px 0;
  text-align: center;
}

.sister-mark {
  font-family: var(--serif-en);
  font-size: 15px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 20px;
}

.sister-title {
  font-family: var(--serif-ko);
  font-weight: 400;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 32px;
}

.sister-lead {
  font-size: 18px;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 auto 48px;
}

.sister-cta {
  display: inline-block;
  padding: 18px 48px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--serif-en);
  font-size: 14px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: all 0.4s ease;
  min-height: 44px;
}

.sister-cta:hover {
  background: var(--accent);
  color: var(--bg);
}

/* Artist note embed */
.note-frame {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  padding: 56px;
  margin-top: 40px;
}

.note-frame p {
  font-family: var(--serif-ko);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.95;
  color: var(--ink);
  margin-bottom: 24px;
}

.note-frame h3 {
  font-family: var(--serif-ko);
  font-weight: 500;
  font-size: 22px;
  color: var(--ink);
  margin: 40px 0 20px;
}

.note-links {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.note-link {
  font-family: var(--serif-en);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--accent);
  padding: 10px 20px;
  border: 1px solid var(--line);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.note-link:hover {
  border-color: var(--accent);
  background: var(--bg-alt);
}

/* Mobile */
@media (max-width: 720px) {
  .header-inner {
    padding: 20px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .site-nav {
    gap: 20px;
    font-size: 13px;
  }
  .hero, .section, .site-footer, .signature-section {
    padding-left: 24px;
    padding-right: 24px;
  }
  .hero {
    padding-top: 80px;
    padding-bottom: 72px;
  }
  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }
  .room-card {
    padding: 40px 28px;
  }
  .letter-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 32px 24px;
  }
  .note-frame {
    padding: 32px 24px;
  }
}

/* ─────────────────────────────────────────────────────────
   원작 규정 방 · regulation.html 전용 결
   ───────────────────────────────────────────────────────── */

.page-title {
  font-family: 'Cormorant Garamond', 'Noto Serif KR', serif;
  font-weight: 500;
  font-size: 2.6rem;
  line-height: 1.2;
  margin: 0.6em 0 0.4em;
  color: var(--ink, #1a1d24);
}

.page-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink-soft, #3d4048);
  margin-bottom: 2.4em;
}

/* 다운로드 카드 */
.reg-downloads {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 2.2em 0 1.6em;
}

.reg-dl-primary,
.reg-dl-secondary {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 24px;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.reg-dl-primary {
  background: #1a1d24;
  color: #f5f2ec;
}

.reg-dl-primary:hover {
  background: #2a2f38;
}

.reg-dl-secondary {
  background: #f5f2ec;
  color: #1a1d24;
  border: 1px solid #d8d3c8;
}

.reg-dl-secondary:hover {
  background: #ede9e0;
}

.reg-dl-label {
  font-weight: 500;
  font-size: 1rem;
}

.reg-dl-meta {
  font-size: 0.85rem;
  opacity: 0.75;
}

/* 이전 판본 링크 */
.reg-versions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: baseline;
  padding: 14px 20px;
  margin-top: 20px;
  border-top: 1px solid #e5e0d5;
  border-bottom: 1px solid #e5e0d5;
  font-size: 0.9rem;
}

.reg-versions-label {
  font-size: 0.82rem;
  color: #7a7a75;
  letter-spacing: 0.04em;
}

.reg-version-link {
  color: #5a5a55;
  text-decoration: underline;
  text-decoration-color: #d0cbc0;
  text-underline-offset: 3px;
}

.reg-version-link:hover {
  color: #1a1d24;
  text-decoration-color: currentColor;
}

/* 여는 결 */
.reg-opener {
  background: #faf7f0;
  border-top: 1px solid #ece7db;
  border-bottom: 1px solid #ece7db;
}

/* 조항 카드 */
.reg-articles {
  padding-top: 32px;
}

.reg-article {
  position: relative;
  margin-bottom: 3.2em;
  padding: 32px 0 32px 0;
  border-top: 1px solid #e5e0d5;
}

.reg-article:first-child {
  border-top: none;
  padding-top: 0;
}

.reg-num {
  font-family: 'Cormorant Garamond', 'Noto Serif KR', serif;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  color: #7a7a75;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.reg-title {
  font-family: 'Cormorant Garamond', 'Noto Serif KR', serif;
  font-weight: 500;
  font-size: 1.7rem;
  line-height: 1.3;
  margin: 0 0 0.6em;
  color: #1a1d24;
}

.reg-lead {
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.7;
  color: #1a1d24;
  margin-bottom: 1em;
}

.reg-sublead {
  font-size: 1rem;
  line-height: 1.75;
  color: #3d4048;
  margin: 1.4em 0 0.8em;
  padding-left: 14px;
  border-left: 2px solid #b8b0a0;
}

.reg-article p {
  font-size: 0.98rem;
  line-height: 1.85;
  color: #3d4048;
  margin: 0.8em 0;
}

.reg-list {
  margin: 0.8em 0 1em;
  padding-left: 1.2em;
}

.reg-list li {
  font-size: 0.98rem;
  line-height: 1.85;
  color: #3d4048;
  margin-bottom: 0.4em;
}

.reg-list-inner {
  margin-top: 0.4em;
  margin-bottom: 0.4em;
  padding-left: 1.4em;
  font-size: 0.94rem;
}

.reg-list-inner li {
  font-size: 0.94rem;
  color: #55575e;
}

.reg-code {
  display: inline-block;
  padding: 8px 14px;
  margin: 0.6em 0;
  background: #1a1d24;
  color: #f5f2ec;
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  border-radius: 3px;
}

/* 비교 표 */
.reg-compare {
  background: #faf7f0;
  border-top: 1px solid #ece7db;
  border-bottom: 1px solid #ece7db;
}

.reg-compare-table {
  display: grid;
  gap: 1px;
  background: #d8d3c8;
  border: 1px solid #d8d3c8;
  margin: 1.8em 0;
  overflow: hidden;
  border-radius: 4px;
}

.reg-row {
  display: grid;
  grid-template-columns: 1.2fr 2fr 2fr;
  gap: 1px;
  background: #d8d3c8;
}

.reg-row-head {
  background: #1a1d24;
}

.reg-row-head .reg-cell {
  background: #1a1d24;
  color: #f5f2ec;
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  padding: 14px 18px;
}

.reg-cell {
  background: #ffffff;
  padding: 14px 18px;
  font-size: 0.93rem;
  line-height: 1.6;
  color: #3d4048;
}

.reg-cell-label {
  font-weight: 500;
  color: #1a1d24;
  background: #f5f2ec;
}

/* 봉인 그리드 */
.reg-seal {
  border-top: 1px solid #e5e0d5;
}

.reg-seal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 2em 0 1.6em;
}

.reg-seal-item {
  padding: 20px 18px;
  background: #faf7f0;
  border: 1px solid #ece7db;
  border-radius: 4px;
  text-align: center;
}

.reg-seal-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.6rem;
  color: #b8b0a0;
  line-height: 1;
  margin-bottom: 6px;
}

.reg-seal-name {
  font-weight: 500;
  font-size: 0.95rem;
  color: #1a1d24;
  margin-bottom: 4px;
}

.reg-seal-desc {
  font-size: 0.78rem;
  color: #7a7a75;
  letter-spacing: 0.02em;
}

/* 해시 값 */
.reg-hash {
  margin-top: 20px;
  padding: 16px 20px;
  background: #1a1d24;
  color: #f5f2ec;
  border-radius: 4px;
  overflow-x: auto;
}

.reg-hash-label {
  font-size: 0.78rem;
  color: #b8b0a0;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.reg-hash-value {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 0.82rem;
  word-break: break-all;
  line-height: 1.4;
}

/* 반응형 */
@media (max-width: 720px) {
  .page-title {
    font-size: 2rem;
  }
  .reg-title {
    font-size: 1.4rem;
  }
  .reg-seal-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reg-row {
    grid-template-columns: 1fr;
  }
  .reg-cell-label {
    font-size: 0.82rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 8px 14px;
  }
  .reg-versions {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}