/* =====================================================================
   blog.css — 칼럼(게시판) 섹션 공용 스타일
   기존 index.html 디자인 시스템에서 shell(토큰·폰트·nav·footer·모달)
   추출 + 칼럼 전용(카드·아티클 타이포그래피) 추가
   경로: /assets/blog.css — url()은 이 파일 기준 상대경로(../ = 루트)
   ===================================================================== */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.min.css');

/* ===== FONTS ===== */
@font-face {
  font-family: 'GANGWONSTATE';
  src: url('../fonts/GANGWONSTATE-SemiBold.woff2') format('woff2'),
       url('../fonts/GANGWONSTATE-SemiBold.otf') format('opentype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'ChosunSg';
  src: url('../fonts/ChosunSg.woff2') format('woff2'),
       url('../fonts/ChosunSg.TTF') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ===== TOKENS ===== */
:root {
  --cream: #F5F0E8;
  --beige: #EFECE5;
  --beige-dark: #E4DFD5;
  --terracotta: #C4704A;
  --terracotta-light: #E8906A;
  --terracotta-pale: #F5E6DC;
  --dark-green: #2D4A3E;
  --charcoal: #1C1C1C;
  --warm-gray: #6B6560;
  --warm-gray-light: #9C9490;
  --white: #FFFFFF;
  --serif: 'Cormorant Garamond', 'Nanum Myeongjo', serif;
  --display: 'GANGWONSTATE', 'Nanum Myeongjo', serif;
  --sans: 'Pretendard Variable', Pretendard, 'Nanum Gothic', sans-serif;
  --body: 'Pretendard Variable', Pretendard, 'Nanum Gothic', sans-serif;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--cream);
  color: var(--charcoal);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== NAVIGATION ===== */
#main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 5%;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
#main-nav.scrolled {
  background: rgba(245, 240, 232, 0.97);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--charcoal);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.nav-logo-mark { width: 34px; height: 34px; display: block; flex-shrink: 0; }
.nav-logo .accent { color: var(--terracotta); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--warm-gray);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--charcoal); }
.nav-links a.active { color: var(--charcoal); font-weight: 700; }
.nav-cta {
  background: var(--terracotta) !important;
  color: var(--white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 4px;
  font-weight: 700 !important;
  transition: background 0.2s !important;
}
.nav-cta:hover { background: var(--terracotta-light) !important; }
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--charcoal);
  transition: 0.3s;
}

/* ===== MOBILE NAV ===== */
.mobile-menu {
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: rgba(245,240,232,0.98);
  backdrop-filter: blur(8px);
  padding: 1.5rem 5% 2rem;
  display: none;
  flex-direction: column;
  gap: 1.25rem;
  border-top: 1px solid var(--beige-dark);
  z-index: 99;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--charcoal);
  text-decoration: none;
}
.mobile-menu .nav-cta { display: inline-block; text-align: center; }

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--terracotta);
  color: var(--white);
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.875rem 1.75rem;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}
.btn-primary:hover { background: var(--terracotta-light); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--charcoal);
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 400;
  padding: 0.875rem 1.75rem;
  border-radius: 4px;
  border: 1.5px solid var(--beige-dark);
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
}
.btn-outline:hover { border-color: var(--warm-gray); transform: translateY(-2px); }

/* ===== PAGE WRAPPER (fixed-nav offset) ===== */
.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 120px 5% 40px;
}
.page-wide { max-width: 1120px; }

/* 아티클 흰색 카드 (크림 배경과 분리된 깔끔한 읽기 영역) */
main.page > article {
  background: var(--white);
  border: 1px solid var(--beige-dark);
  border-radius: 16px;
  padding: 2.75rem 3rem;
  box-shadow: 0 2px 24px rgba(0,0,0,0.04);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--warm-gray-light);
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}
.breadcrumb a { color: var(--warm-gray); text-decoration: none; }
.breadcrumb a:hover { color: var(--terracotta); }
.breadcrumb .sep { color: var(--beige-dark); }

/* ===== SHARED LABELS ===== */
.section-label {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--terracotta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

/* ===== CATEGORY BADGE ===== */
.cat-badge {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  border: 1px solid currentColor;
  line-height: 1;
}
.cat-column { color: var(--terracotta); }
.cat-qa     { color: var(--dark-green); }
.cat-case   { color: var(--warm-gray); }
.cat-news   { color: var(--terracotta-light); }

/* ===== INSIGHTS HUB (목록) ===== */
.hub-header { text-align: center; margin-bottom: 2.75rem; }
.hub-title {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--charcoal);
  margin-bottom: 0.85rem;
}
.hub-sub {
  font-family: var(--body);
  font-size: 0.98rem;
  color: var(--warm-gray);
  line-height: 1.85;
  max-width: 560px;
  margin: 0 auto;
  word-break: keep-all;
}
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 2.75rem;
}
.filter-chip {
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--warm-gray);
  background: var(--white);
  border: 1.5px solid var(--beige-dark);
  border-radius: 999px;
  padding: 0.5rem 1.15rem;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-chip:hover { border-color: var(--warm-gray); color: var(--charcoal); }
.filter-chip.active {
  background: var(--terracotta);
  border-color: var(--terracotta);
  color: var(--white);
  font-weight: 700;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.post-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--beige-dark);
  border-radius: 12px;
  padding: 1.75rem;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.07);
  border-color: var(--terracotta-pale);
}
.post-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.post-card-date { font-family: var(--sans); font-size: 0.74rem; color: var(--warm-gray-light); }
.post-card-title {
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--charcoal);
  margin-bottom: 0.65rem;
  word-break: keep-all;
  text-wrap: balance;
}
.post-card-excerpt {
  font-family: var(--body);
  font-size: 0.88rem;
  color: var(--warm-gray);
  line-height: 1.8;
  word-break: keep-all;
  flex-grow: 1;
}
.post-card-more {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--terracotta);
  margin-top: 1.15rem;
}
.hub-empty {
  grid-column: 1 / -1;
  text-align: center;
  font-family: var(--body);
  color: var(--warm-gray-light);
  padding: 3rem 0;
}

/* ===== ARTICLE (개별 글) ===== */
.article-header { margin-bottom: 2.5rem; }
.article-meta {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
}
.article-date { font-family: var(--sans); font-size: 0.8rem; color: var(--warm-gray-light); }
.article-title {
  font-family: var(--display);
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--charcoal);
  margin-bottom: 1.25rem;
  word-break: keep-all;
  text-wrap: balance;
}
.article-byline {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--sans);
  font-size: 0.84rem;
  color: var(--warm-gray);
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--beige-dark);
}
.article-byline a { color: var(--charcoal); font-weight: 700; text-decoration: none; }
.article-byline a:hover { color: var(--terracotta); }

/* 본문 타이포그래피 */
.post-body { padding-top: 2rem; }
.post-body > * + * { margin-top: 1.5rem; }
.post-body p {
  font-family: var(--body);
  font-size: 1rem;
  color: #2c2c2c;
  line-height: 1.95;
  word-break: normal;
  text-wrap: pretty;
  text-align: justify;
}
.post-body h2 {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--charcoal);
  line-height: 1.4;
  margin-top: 2.75rem;
  word-break: keep-all;
}
.post-body h3 {
  font-family: var(--display);
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-top: 2rem;
  word-break: keep-all;
}
.post-body ul, .post-body ol { padding-left: 1.4rem; }
.post-body li {
  font-family: var(--body);
  font-size: 1rem;
  color: #2c2c2c;
  line-height: 1.9;
  margin-bottom: 0.6rem;
  word-break: normal;
  text-align: justify;
}
.post-body strong { font-weight: 700; color: var(--charcoal); }
.post-body a { color: var(--terracotta); text-decoration: underline; text-underline-offset: 3px; }
.post-body blockquote {
  border-left: 3px solid var(--terracotta);
  background: var(--beige);
  padding: 1.1rem 1.4rem;
  border-radius: 0 8px 8px 0;
  font-family: var(--body);
  color: var(--warm-gray);
  line-height: 1.85;
  word-break: normal;
  text-align: justify;
}
/* Q&A 블록 */
.qa-block { border-top: 1px solid var(--beige-dark); padding-top: 1.75rem; }
.qa-q {
  font-family: var(--display);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--charcoal);
  line-height: 1.45;
  margin-bottom: 0.85rem;
  word-break: keep-all;
  padding-left: 1.3em;
  text-indent: -1.3em;
}
.qa-q::before { content: 'Q. '; color: var(--terracotta); }
.qa-a { font-family: var(--body); font-size: 1rem; color: #2c2c2c; line-height: 1.95; word-break: normal; text-wrap: pretty; padding-left: 1.3em; text-indent: -1.3em; text-align: justify; }
.qa-a::before { content: 'A. '; color: var(--terracotta); font-weight: 700; }

/* ===== CTA (글 하단 상담 유도) ===== */
.post-cta {
  margin-top: 3.5rem;
  background: var(--dark-green);
  border-radius: 14px;
  padding: 2.5rem 2rem;
  text-align: center;
}
.post-cta h3 {
  font-family: var(--display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.6rem;
  word-break: keep-all;
}
.post-cta p {
  font-family: var(--sans);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.72);
  margin-bottom: 1.5rem;
  word-break: keep-all;
}
.post-cta .btn-primary { background: var(--terracotta); }
.post-cta .btn-primary:hover { background: var(--terracotta-light); }

/* 관련 링크 */
.post-related {
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--beige-dark);
}
.post-related .section-label { margin-bottom: 1rem; }
.post-related-links { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.post-related-links a {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--charcoal);
  text-decoration: none;
  border: 1.5px solid var(--beige-dark);
  border-radius: 999px;
  padding: 0.5rem 1.1rem;
  transition: border-color 0.2s, color 0.2s;
}
.post-related-links a:hover { border-color: var(--terracotta); color: var(--terracotta); }
.back-to-hub {
  display: inline-block;
  margin-top: 2.5rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--warm-gray);
  text-decoration: none;
}
.back-to-hub:hover { color: var(--terracotta); }

/* ===== FOOTER ===== */
footer { background: var(--charcoal); padding: 3rem 5%; }
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.8rem;
}
.footer-logo-mark { width: 40px; height: 40px; display: block; flex-shrink: 0; }
.footer-logo .accent { color: var(--terracotta-light); }
.footer-info {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 400;
  color: rgba(255,255,255,0.38);
  line-height: 2;
}
.footer-links { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; }
.footer-links a {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: rgba(255,255,255,0.38);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: rgba(255,255,255,0.8); }

/* ===== FLOATING BUTTONS ===== */
.float-btns {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 50;
}
.float-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.3rem;
  transition: transform 0.2s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.float-btn:hover { transform: scale(1.1); }
.float-kakao { background: #FEE500; color: #3A1D1D; }
.float-call { background: var(--terracotta); color: var(--white); }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(28,28,28,0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  padding: 1rem;
}
.modal-overlay.active { opacity: 1; pointer-events: all; }
.modal {
  background: var(--cream);
  border-radius: 12px;
  padding: 2.5rem;
  width: 100%;
  max-width: 480px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s;
}
.modal-overlay.active .modal { transform: translateY(0); }
.modal-close {
  position: absolute;
  top: 1.25rem; right: 1.25rem;
  background: none; border: none;
  font-size: 1.4rem; cursor: pointer;
  color: var(--warm-gray); line-height: 1;
}
.modal h3 { font-family: var(--display); font-size: 1.45rem; font-weight: 700; margin-bottom: 0.4rem; }
.modal p { font-family: var(--sans); font-size: 0.875rem; color: var(--warm-gray); margin-bottom: 1.75rem; }
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--charcoal);
  margin-bottom: 0.4rem;
}
.form-group label .req { color: var(--terracotta); margin-left: 2px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: var(--sans);
  font-size: 0.875rem;
  color: var(--charcoal);
  background: var(--white);
  border: 1.5px solid var(--beige-dark);
  border-radius: 6px;
  padding: 0.7rem 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--terracotta); }
.form-group textarea { resize: vertical; min-height: 90px; }
.form-submit {
  width: 100%;
  background: var(--terracotta);
  color: var(--white);
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.875rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 0.5rem;
}
.form-submit:hover { background: var(--terracotta-light); }
.form-submit:disabled { opacity: 0.6; cursor: not-allowed; }

/* ===== ANIMATIONS ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}
@media (max-width: 760px) {
  .post-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .footer-inner { flex-direction: column; }
  .float-btns { bottom: 1.5rem; right: 1.5rem; }
  .page { padding-top: 104px; }
  main.page > article { padding: 1.75rem 1.4rem; }
}