/* ─── Reset & Base ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; min-width: 0; }

:root {
  --black: #0f0f0f;
  --white: #ffffff;
  --accent: #1c4a8f;
  --accent-hover: #163b73;
  --gray-50: #f7f7f5;
  --gray-100: #eeeeeb;
  --gray-200: #dededa;
  --gray-400: #979793;
  --gray-600: #5a5a56;
  --font: 'Pretendard', 'Apple SD Gothic Neo', 'Noto Sans KR', -apple-system, sans-serif;
  --max-w: 1160px;
  --nav-h: 64px;
}

html { scroll-behavior: smooth; font-size: 16px; overflow-x: hidden; }

body {
  font-family: var(--font);
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  word-break: keep-all;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: var(--font); border: none; background: none; }
ul, ol { list-style: none; }

/* ─── Animations ─────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up-d1 { transition-delay: 0.1s; }
.fade-up-d2 { transition-delay: 0.2s; }
.fade-up-d3 { transition-delay: 0.3s; }

/* ─── Navigation ─────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: box-shadow 0.3s;
}
.nav.scrolled { box-shadow: 0 1px 0 rgba(0,0,0,0.08); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
}

.nav-logo {
  font-size: 15px; font-weight: 700; letter-spacing: -0.02em;
  color: var(--black); white-space: nowrap;
}
.nav-logo span { color: var(--accent); }

.nav-links { display: flex; gap: 0; }

.nav-item { position: relative; }

.nav-link {
  display: block;
  padding: 0 18px;
  height: var(--nav-h);
  line-height: var(--nav-h);
  font-size: 14px; font-weight: 500; color: var(--gray-600);
  transition: color 0.2s; white-space: nowrap;
}
.nav-link:hover,
.nav-item.active > .nav-link { color: var(--black); }
.nav-item.active > .nav-link { font-weight: 700; }

.nav-dropdown {
  position: absolute;
  top: calc(var(--nav-h) - 2px);
  left: 0;
  background: var(--white);
  min-width: 160px;
  border: 1px solid var(--gray-100);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.18s, transform 0.18s;
  border-radius: 4px;
  overflow: hidden;
}
.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1; pointer-events: auto; transform: translateY(0);
}
.nav-dropdown a {
  display: block; padding: 11px 18px;
  font-size: 13px; color: var(--gray-600);
  transition: background 0.15s, color 0.15s;
  border-bottom: 1px solid var(--gray-100);
}
.nav-dropdown li:last-child a { border-bottom: none; }
.nav-dropdown a:hover { background: var(--gray-50); color: var(--accent); }

.nav-mobile-btn {
  display: none; padding: 4px; font-size: 22px; color: var(--black);
}

.nav-mobile-menu {
  display: none;
  position: absolute; top: var(--nav-h); left: 0; right: 0;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
  max-height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}
.nav-mobile-menu.open { display: block; }

.nav-mobile-group { border-bottom: 1px solid var(--gray-100); }
.nav-mobile-parent {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  font-size: 15px; font-weight: 600; color: var(--black);
  cursor: pointer; user-select: none;
}
.nav-mobile-parent .arrow {
  font-size: 11px; transition: transform 0.2s; color: var(--gray-400);
}
.nav-mobile-group.open .arrow { transform: rotate(180deg); }

.nav-mobile-sub {
  display: none;
  background: var(--gray-50);
  padding: 4px 0 4px 24px;
}
.nav-mobile-group.open .nav-mobile-sub { display: block; }
.nav-mobile-sub a {
  display: block; padding: 12px 0;
  font-size: 14px; color: var(--gray-600);
  border-bottom: 1px solid var(--gray-100);
}
.nav-mobile-sub li:last-child a { border-bottom: none; }
.nav-mobile-sub a:hover { color: var(--accent); }

/* ─── Page Banner ─────────────────────────────────── */
.page-banner {
  padding-top: var(--nav-h);
  background: var(--black); color: var(--white);
}
.page-banner-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 56px 40px 52px;
}
.page-breadcrumb {
  font-size: 12px; color: rgba(255,255,255,0.35); letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.page-breadcrumb a { color: rgba(255,255,255,0.35); }
.page-breadcrumb a:hover { color: rgba(255,255,255,0.6); }
.page-breadcrumb .sep { margin: 0 8px; }
.page-title {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700; letter-spacing: -0.03em; line-height: 1.1;
}

/* ─── Sub-nav (anchor tabs) ──────────────────────── */
.sub-nav {
  border-bottom: 1px solid var(--gray-200);
  background: var(--white);
  position: sticky; top: var(--nav-h); z-index: 10;
}
.sub-nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
  display: flex; gap: 0; overflow-x: auto;
  scrollbar-width: none;
}
.sub-nav-inner::-webkit-scrollbar { display: none; }
.sub-nav-link {
  display: block;
  padding: 16px 22px;
  font-size: 14px; font-weight: 500; color: var(--gray-400);
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.sub-nav-link:hover { color: var(--black); }
.sub-nav-link.active {
  color: var(--accent); border-bottom-color: var(--accent); font-weight: 700;
}

/* ─── Hidden (present but non-discoverable) nav links ─── */
/* Rendered but visually collapsed and unclickable. Used for
   편집위원회 전용 / 심사위원 전용 sub-pages, which must exist as real
   pages (direct link works) but not be discoverable via normal nav. */
.nav-hidden-link {
  color: transparent !important;
  font-size: 1px !important;
  line-height: 1 !important;
  padding: 0 !important;
  border: 0 !important;
  pointer-events: none !important;
  user-select: none !important;
  -webkit-user-select: none !important;
}

/* ─── Content sections ──────────────────────────── */
.section { padding: 80px 0; }
.section-alt { background: var(--gray-50); }

.section-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 40px;
}

.section-tag {
  font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin-bottom: 14px; display: block;
}
.section-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700; letter-spacing: -0.03em; line-height: 1.2;
  margin-bottom: 24px;
}
.section-lead {
  font-size: 17px; color: var(--gray-600); line-height: 1.9;
  max-width: 700px; font-weight: 300;
}

.divider { height: 1px; background: var(--gray-100); margin: 0; }

/* ─── Cards ─────────────────────────────────────── */
.card-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  margin-top: 48px;
}
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  padding: 32px;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.07); border-color: var(--gray-200); }

.card-icon { font-size: 28px; margin-bottom: 20px; }
.card-title { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.card-desc { font-size: 14px; color: var(--gray-600); line-height: 1.75; }

/* ─── Table ─────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin-top: 32px; }
.data-table {
  width: 100%; border-collapse: collapse; font-size: 14px; min-width: 600px;
}
.data-table th {
  background: var(--gray-50); padding: 13px 20px;
  font-weight: 600; text-align: left;
  border-bottom: 2px solid var(--gray-200); white-space: nowrap;
  color: var(--black);
}
.data-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600); vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--gray-50); }
.data-table .col-center { text-align: center; }
.data-table .col-narrow { width: 80px; }
.data-table .col-date { width: 110px; white-space: nowrap; }
.data-table a { color: var(--accent); transition: opacity 0.15s; }
.data-table a:hover { opacity: 0.75; text-decoration: underline; }

.table-empty {
  text-align: center; padding: 56px 0;
  font-size: 14px; color: var(--gray-400);
}

/* ─── Notice List ─────────────────────────────────── */
.notice-list { margin-top: 24px; }
.notice-item {
  display: flex; align-items: center; gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--gray-100);
  cursor: pointer;
  transition: background 0.1s;
}
.notice-item:first-child { border-top: 2px solid var(--gray-200); }
.notice-item:hover .notice-title { color: var(--accent); }

.notice-badge {
  flex-shrink: 0;
  font-size: 11px; font-weight: 700; letter-spacing: 0.05em;
  padding: 3px 9px; border-radius: 2px;
  background: var(--accent); color: var(--white);
  white-space: nowrap;
}
.notice-badge.general { background: var(--gray-100); color: var(--gray-600); }
.notice-title { flex: 1; font-size: 15px; font-weight: 500; transition: color 0.15s; }
.notice-date { flex-shrink: 0; font-size: 13px; color: var(--gray-400); }

/* ─── Org Chart ─────────────────────────────────── */
.org-section { margin-top: 48px; }
.org-section-title {
  font-size: 14px; font-weight: 700; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--accent);
  padding: 12px 0; border-bottom: 2px solid var(--accent);
  margin-bottom: 20px;
}
.org-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.org-card {
  text-align: center; padding: 20px 12px;
  border: 1px solid var(--gray-100);
}
.org-role {
  font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin-bottom: 6px;
}
.org-name { font-size: 15px; font-weight: 700; margin-bottom: 3px; }
.org-affil { font-size: 12px; color: var(--gray-400); }

/* ─── Journal Meta ─────────────────────────────────── */
.journal-meta {
  display: flex; gap: 48px; flex-wrap: wrap;
  padding: 32px 0;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
  margin: 32px 0 48px;
}
.journal-meta-label {
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--gray-400); margin-bottom: 6px;
}
.journal-meta-value { font-size: 16px; font-weight: 600; }

/* ─── Rule List ─────────────────────────────────── */
.rule-list { margin-top: 24px; }
.rule-item {
  display: flex; gap: 20px; padding: 20px 0;
  border-bottom: 1px solid var(--gray-100);
}
.rule-item:first-child { border-top: 1px solid var(--gray-100); }
.rule-num {
  flex-shrink: 0; font-size: 13px; font-weight: 700;
  color: var(--accent); width: 32px; padding-top: 2px;
}
.rule-title { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.rule-desc { font-size: 14px; color: var(--gray-600); line-height: 1.8; }

/* ─── CTA Block ─────────────────────────────────── */
.cta-block {
  background: var(--accent); color: var(--white);
  padding: 72px 40px; text-align: center;
}
.cta-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700; letter-spacing: -0.03em;
  margin-bottom: 14px;
}
.cta-desc {
  font-size: 16px; color: rgba(255,255,255,0.7);
  margin-bottom: 36px; font-weight: 300; line-height: 1.8;
}
.btn-cta {
  display: inline-block;
  background: var(--white); color: var(--accent);
  padding: 14px 36px; border-radius: 980px;
  font-size: 15px; font-weight: 700;
  transition: transform 0.15s;
}
.btn-cta:hover { transform: scale(1.03); }

/* ─── Index Hero ─────────────────────────────────── */
.hero {
  padding-top: var(--nav-h);
  background: var(--black); color: var(--white);
  min-height: 500px; display: flex; align-items: center;
}
.hero-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 88px 40px 96px;
  width: 100%;
}
.hero-tag {
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.35); margin-bottom: 28px; display: block;
}
.hero-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800; letter-spacing: -0.04em; line-height: 1.1;
  margin-bottom: 28px;
}
.hero-sub {
  font-size: 18px; color: rgba(255,255,255,0.55);
  line-height: 1.8; font-weight: 300;
  max-width: 580px; margin-bottom: 52px;
}
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-white {
  display: inline-block;
  background: var(--white); color: var(--black);
  padding: 13px 28px; border-radius: 980px;
  font-size: 14px; font-weight: 700;
  transition: transform 0.15s;
}
.btn-white:hover { transform: scale(1.02); }
.btn-outline-white {
  display: inline-block;
  border: 1.5px solid rgba(255,255,255,0.3);
  color: var(--white);
  padding: 13px 28px; border-radius: 980px;
  font-size: 14px; font-weight: 500;
  transition: border-color 0.2s, transform 0.15s;
}
.btn-outline-white:hover { border-color: var(--white); transform: scale(1.02); }

/* ─── Index: Summary Strips ─────────────────────── */
.summary-strip {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--gray-100);
}
.strip-item {
  padding: 48px 40px 48px 0;
  border-right: 1px solid var(--gray-100);
}
.strip-item:last-child { border-right: none; padding-right: 0; }
.strip-tag {
  font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin-bottom: 14px; display: block;
}
.strip-title { font-size: 20px; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.02em; }
.strip-desc { font-size: 14px; color: var(--gray-600); line-height: 1.75; font-weight: 300; }
.strip-link {
  display: inline-block; margin-top: 18px;
  font-size: 13px; font-weight: 600; color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.strip-link:hover { border-bottom-color: var(--accent); }

/* ─── Index: News preview ─────────────────────── */
.news-preview-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 0;
}
.news-more {
  font-size: 13px; color: var(--gray-400); transition: color 0.2s;
}
.news-more:hover { color: var(--black); }

/* ─── Footer ─────────────────────────────────────── */
footer {
  border-top: 1px solid var(--gray-100);
  padding: 40px; background: var(--white);
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: flex-start; justify-content: space-between;
  flex-wrap: wrap; gap: 24px;
}
.footer-name { font-size: 14px; font-weight: 700; margin-bottom: 8px; }
.footer-detail { font-size: 12px; color: var(--gray-400); line-height: 1.85; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { font-size: 12px; color: var(--gray-400); transition: color 0.2s; }
.footer-links a:hover { color: var(--black); }
.footer-copy { font-size: 12px; color: var(--gray-400); margin-top: 8px; }

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-mobile-btn { display: block; }

  .nav-inner,
  .page-banner-inner,
  .sub-nav-inner,
  .section-inner,
  .hero-inner,
  .footer-inner { padding-left: 24px; padding-right: 24px; }

  .cta-block { padding: 56px 24px; }

  .card-grid { grid-template-columns: 1fr 1fr; }
  .card-grid.card-grid-2 { grid-template-columns: 1fr; }
  .org-grid { grid-template-columns: 1fr 1fr; }

  .summary-strip { grid-template-columns: 1fr; border-top: none; }
  .strip-item { border-right: none; border-bottom: 1px solid var(--gray-100); padding: 32px 0; }
  .strip-item:last-child { border-bottom: none; }

  footer { padding: 32px 24px; }
  .footer-inner { flex-direction: column; }
}

@media (max-width: 600px) {
  .card-grid { grid-template-columns: 1fr; }
  .org-grid { grid-template-columns: 1fr 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-white, .btn-outline-white { text-align: center; }
  .journal-meta { gap: 24px; }
  .data-table { font-size: 13px; }
}