/* 파주바닥코팅전문 - 출판단지의 종이결과 디스플레이 산업의 스크린 라인을 모티프로 한 전용 스타일 */

:root {
  --paju-ink: #1c2438;
  --paju-ink-soft: #3a4460;
  --paju-paper: #f6f1e6;
  --paju-paper-deep: #ece3cf;
  --paju-teal: #12857f;
  --paju-teal-deep: #0b5f5c;
  --paju-amber: #c6842f;
  --paju-amber-soft: #e7b877;
  --paju-line: #d9cfb4;
  --paju-shadow: rgba(28, 36, 56, 0.16);
  --radius-md: 14px;
  --radius-lg: 22px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--paju-ink);
  background: var(--paju-paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--paju-teal-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

h1, h2, h3 { font-weight: 700; color: var(--paju-ink); letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin: 0 0 0.6rem; }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.75rem); margin: 0 0 0.8rem; }

.section-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--paju-ink);
  border-bottom: 3px solid var(--paju-amber);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  color: var(--paju-paper);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.logo:hover { text-decoration: none; color: var(--paju-amber-soft); }

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid rgba(246, 241, 230, 0.35);
  border-radius: 8px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  margin: 0 8px;
  background: var(--paju-paper);
}

#primary-nav {
  display: flex;
  gap: 6px;
}
#primary-nav a {
  color: var(--paju-paper);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.95rem;
  transition: background 0.15s ease, color 0.15s ease;
}
#primary-nav a:hover {
  background: var(--paju-teal);
  color: #fff;
  text-decoration: none;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--paju-ink) 0%, #24304a 70%, #2b3a58 100%);
  padding: 84px 0 96px;
}

.book-spines {
  position: absolute;
  inset: 0;
  opacity: 0.55;
  background-image:
    repeating-linear-gradient(90deg,
      var(--paju-amber) 0px, var(--paju-amber) 8px,
      transparent 8px, transparent 26px,
      var(--paju-teal) 26px, var(--paju-teal) 32px,
      transparent 32px, transparent 54px,
      var(--paju-paper-deep) 54px, var(--paju-paper-deep) 60px,
      transparent 60px, transparent 90px);
  background-size: 100% 100%;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.15) 78%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.15) 78%, transparent 100%);
}

.book-spines::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg,
    rgba(255,255,255,0.05) 0px, rgba(255,255,255,0.05) 1px,
    transparent 1px, transparent 6px);
  mix-blend-mode: overlay;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  color: var(--paju-paper);
}

.eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(198, 132, 47, 0.22);
  border: 1px solid var(--paju-amber-soft);
  color: var(--paju-amber-soft);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.hero h1 { color: #fff; }

.hero-sub {
  color: rgba(246, 241, 230, 0.86);
  font-size: 1.05rem;
  margin: 0 0 30px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn-primary {
  background: var(--paju-amber);
  color: var(--paju-ink);
  box-shadow: 0 10px 24px rgba(198, 132, 47, 0.35);
}
.btn-primary:hover {
  background: var(--paju-amber-soft);
  text-decoration: none;
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--paju-paper);
  border: 1.5px solid rgba(246, 241, 230, 0.55);
}
.btn-ghost:hover {
  background: rgba(246, 241, 230, 0.12);
  text-decoration: none;
  transform: translateY(-2px);
}

/* ---------- Content ---------- */
.content-section { padding: 72px 0; }

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
}

.content-main h2 {
  position: relative;
  padding-left: 18px;
}
.content-main h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 5px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--paju-teal), var(--paju-amber));
}
.content-main h2:not(:first-child) { margin-top: 2.4rem; }

.content-main p {
  color: var(--paju-ink-soft);
  font-size: 1rem;
}

.fact-box {
  background: #fff;
  border: 1px solid var(--paju-line);
  border-top: 4px solid var(--paju-teal);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  box-shadow: 0 14px 30px var(--paju-shadow);
}
.fact-box h2 { font-size: 1.15rem; margin-bottom: 14px; }

.fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.fact-list li {
  position: relative;
  padding-left: 24px;
  font-size: 0.93rem;
  color: var(--paju-ink-soft);
}
.fact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--paju-amber);
  transform: rotate(45deg);
}

/* ---------- 관련 페이지 ---------- */
.related-section {
  padding: 56px 0;
  border-top: 1px solid var(--paju-line);
}

.related-section h2 {
  position: relative;
  padding-left: 18px;
}
.related-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 5px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--paju-teal), var(--paju-amber));
}

.related-section ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-section li { margin: 0; }

.related-section a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 10px 22px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--paju-line);
  color: var(--paju-teal-deep);
  font-weight: 700;
  font-size: 0.92rem;
  transition: background 0.15s ease, transform 0.15s ease;
}

.related-section a:hover {
  background: rgba(18, 133, 127, 0.08);
  border-color: var(--paju-teal);
  transform: translateY(-2px);
  text-decoration: none;
}

/* ---------- FAQ ---------- */
.faq-section {
  background: var(--paju-paper-deep);
  padding: 68px 0;
  border-top: 1px solid var(--paju-line);
  border-bottom: 1px solid var(--paju-line);
}
.faq-section h2 { text-align: center; margin-bottom: 28px; }

.accordion { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.accordion-item {
  background: #fff;
  border: 1px solid var(--paju-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.accordion-item h3 { margin: 0; }

.accordion-trigger {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 18px 22px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paju-ink);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.accordion-trigger::after {
  content: "+";
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--paju-teal);
  color: #fff;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}
.accordion-trigger[aria-expanded="true"]::after {
  content: "\2212";
  background: var(--paju-amber);
  transform: rotate(180deg);
}
.accordion-trigger:hover { background: rgba(18, 133, 127, 0.06); }

.accordion-panel { padding: 0 22px 20px; }
.accordion-panel p { margin: 0; color: var(--paju-ink-soft); }

/* ---------- Site photos ---------- */
.site-photo-section {
  padding: 68px 24px;
  text-align: center;
}
.site-photo-section h2 { margin-bottom: 26px; }

.site-photo-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  place-items: center;
}
.site-photo-grid picture {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 34px var(--paju-shadow);
  border: 1px solid var(--paju-line);
}
.site-photo-grid img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

@media (min-width: 640px) {
  .site-photo-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- CTA ---------- */
.cta-section {
  background: linear-gradient(120deg, var(--paju-teal-deep), var(--paju-ink));
  padding: 70px 0;
}
.cta-inner { text-align: center; }
.cta-inner h2 { color: #fff; }
.cta-inner p { color: rgba(246, 241, 230, 0.85); margin-bottom: 26px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--paju-ink);
  color: rgba(246, 241, 230, 0.75);
  padding: 16px 24px;
  text-align: center;
  font-size: 0.9rem;
}
.site-footer address {
  font-style: normal;
  line-height: 1.5;
  margin-bottom: 14px;
}
.site-footer address a { color: var(--paju-amber-soft); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .content-grid { grid-template-columns: 1fr; }
  .content-side { order: -1; }
}

@media (max-width: 720px) {
  .menu-toggle { display: flex; }
  #primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paju-ink);
    flex-direction: column;
    padding: 10px 24px 18px;
    display: none;
    border-bottom: 3px solid var(--paju-amber);
  }
  #primary-nav.is-open { display: flex; }
  #primary-nav a { padding: 12px 10px; }
  .hero { padding: 64px 0 72px; }
}

@media (max-width: 480px) {
  .section-inner { padding: 0 18px; }
  .btn { width: 100%; text-align: center; }
  .hero-cta { flex-direction: column; }
}