/* 에폭시바닥코팅전문 — 글로시 블루 컨셉, 좌우 스플릿 스크롤 레이아웃 */

:root {
  --primary: #0B4F6C;
  --accent: #01BAEF;
  --ink: #062533;
  --paper: #F3FAFD;
  --glass: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.35);
  --radius-pill: 999px;
  --radius-card: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Sans KR", -apple-system, "Malgun Gothic", sans-serif;
  font-display: swap;
  color: var(--ink);
  background: linear-gradient(180deg, #eaf7fb 0%, #f3fafd 40%, #ffffff 100%);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

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

.table-scroll { overflow-x: auto; }

/* ---------- 헤더 (반투명 오버레이) ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 79, 108, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(1, 186, 239, 0.35);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.menu-toggle {
  width: 44px; height: 44px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  cursor: pointer;
}
.menu-toggle span {
  width: 20px; height: 2px;
  background: #fff;
  border-radius: 2px;
}

#primary-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}
#primary-nav.is-open { display: flex; }
#primary-nav a {
  color: #eaf7fb;
  text-decoration: none;
  padding: 12px 8px;
  border-radius: 10px;
  min-height: 44px;
  display: flex;
  align-items: center;
  font-size: 0.95rem;
}
#primary-nav a:hover { background: rgba(255,255,255,0.12); }

@media (min-width: 768px) {
  .header-inner { flex-wrap: nowrap; }
  .menu-toggle { display: none; }
  #primary-nav {
    display: flex;
    flex-direction: row;
    width: auto;
    gap: 6px;
  }
  #primary-nav a { padding: 10px 14px; }
}

/* ---------- 버튼 (필 형태 + 글로시 하이라이트) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn::before {
  content: "";
  position: absolute;
  top: 0; left: 10%;
  width: 80%; height: 45%;
  background: linear-gradient(180deg, rgba(255,255,255,0.55), rgba(255,255,255,0));
  border-radius: var(--radius-pill);
  pointer-events: none;
}
.btn-primary {
  background: linear-gradient(180deg, #0da3d0, var(--primary));
  color: #fff;
  box-shadow: 0 10px 24px rgba(1, 186, 239, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(1, 186, 239, 0.45); }
.btn-ghost {
  background: rgba(255,255,255,0.6);
  color: var(--primary);
  border: 1.5px solid rgba(11, 79, 108, 0.3);
}
.btn-ghost:hover { transform: translateY(-2px); background: #fff; }

/* ---------- 히어로 ---------- */
.hero {
  padding: 48px 20px 32px;
  background:
    radial-gradient(120% 100% at 90% -10%, rgba(1,186,239,0.35), transparent 55%),
    radial-gradient(100% 80% at 0% 0%, rgba(11,79,108,0.25), transparent 60%);
}
.hero-split {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  gap: 28px;
}
.eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  margin: 0 0 10px;
}
.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  line-height: 1.3;
  margin: 0 0 16px;
  color: var(--primary);
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.05rem;
  color: #244a58;
  margin: 0 0 24px;
  max-width: 46em;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-right picture {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 20px 45px rgba(11, 79, 108, 0.25);
}
.hero-right img { width: 100%; }

@media (min-width: 1024px) {
  .hero-split { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}

/* ---------- 좌우 스플릿 섹션 ---------- */
.split-section { padding: 40px 20px; }
.split-section.alt { background: linear-gradient(180deg, #eaf7fb, #ffffff); }
.split-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}
.split-text h2 {
  color: var(--primary);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.split-text h3 {
  color: var(--primary);
  font-size: 1.1rem;
  margin: 24px 0 8px;
}
.split-text h3:first-of-type { margin-top: 0; }
.split-text p { margin: 0 0 14px; color: #1c3742; }
.split-visual {
  min-height: 160px;
  border-radius: var(--radius-card);
  background:
    linear-gradient(135deg, rgba(1,186,239,0.55), rgba(11,79,108,0.85)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.06) 0 2px, transparent 2px 14px);
  box-shadow: inset 0 0 40px rgba(255,255,255,0.15), 0 18px 40px rgba(11,79,108,0.25);
}

@media (min-width: 1024px) {
  .split-inner { grid-template-columns: 1fr 1fr; align-items: start; gap: 48px; }
  .split-visual { min-height: 100%; align-self: stretch; }
}

/* ---------- 시방 기준표 ---------- */
.section-inner { max-width: 1280px; margin: 0 auto; }
.spec-section { padding: 40px 20px; }
.spec-section h2, .gallery-section h2, .notice-section h2, .faq-section h2, .related-section h2 {
  color: var(--primary);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}
table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
}
thead th {
  background: var(--primary);
  color: #fff;
  text-align: left;
  padding: 14px 16px;
  font-size: 0.95rem;
}
tbody td {
  padding: 14px 16px;
  border-top: 1px solid rgba(11,79,108,0.12);
  font-size: 0.95rem;
}
tbody tr:nth-child(even) { background: rgba(1,186,239,0.06); }

/* ---------- 갤러리 ---------- */
.gallery-section { padding: 40px 20px; }
.gallery-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}
.gallery-grid picture {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 14px 30px rgba(11,79,108,0.18);
}
@media (min-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- 주의사항 ---------- */
.notice-section { padding: 40px 20px; }
.notice-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.notice-list li {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  padding: 16px 18px;
  font-size: 0.98rem;
}
.notice-list strong { color: var(--primary); }

/* ---------- FAQ 아코디언 ---------- */
.faq-section { padding: 40px 20px; }
.accordion { display: grid; gap: 12px; }
.accordion-item {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  overflow: hidden;
}
.accordion-item h3 { margin: 0; }
.accordion-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 16px 20px;
  min-height: 44px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.accordion-trigger::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.2rem;
  color: var(--accent);
}
.accordion-trigger[aria-expanded="true"]::after { content: "−"; }
.accordion-panel { padding: 0 20px 18px; color: #1c3742; }
.accordion-panel p { margin: 0; }

/* ---------- 관련 페이지 ---------- */
.related-section { padding: 40px 20px; }
.related-section p { max-width: 60em; margin: 0 0 20px; color: #1c3742; }
.related-cards {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}
.related-card {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 14px 18px;
  background: linear-gradient(135deg, rgba(1,186,239,0.15), rgba(11,79,108,0.08));
  border: 1px solid rgba(11,79,108,0.15);
  border-radius: 14px;
  text-decoration: none;
  color: var(--primary);
  font-weight: 700;
  transition: transform 0.15s ease;
}
.related-card:hover { transform: translateY(-2px); }
@media (min-width: 768px) {
  .related-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .related-cards { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 48px 20px 60px;
  background: linear-gradient(135deg, var(--primary), #073349);
  color: #fff;
}
.cta-inner { text-align: center; }
.cta-inner h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 12px; }
.cta-inner p { margin: 0 0 24px; color: #cdeaf3; }
.cta-inner .hero-cta { justify-content: center; }
.cta-inner .btn-ghost { background: rgba(255,255,255,0.1); color: #fff; border-color: rgba(255,255,255,0.4); }
.cta-inner .btn-ghost:hover { background: rgba(255,255,255,0.2); }

/* ---------- 푸터 ---------- */
.site-footer {
  background: #062533;
  color: #cdeaf3;
  padding: 40px 20px 28px;
}
.footer-nav {
  max-width: 1280px;
  margin: 0 auto 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}
.footer-nav a {
  color: #cdeaf3;
  text-decoration: none;
  font-size: 0.92rem;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.footer-nav a:hover { color: var(--accent); }
.site-footer address {
  max-width: 1280px;
  margin: 0 auto 16px;
  font-style: normal;
  font-size: 0.9rem;
  line-height: 1.9;
  color: #9fc7d4;
}
.site-footer address a { color: var(--accent); text-decoration: none; }
.site-footer p { max-width: 1280px; margin: 0 auto; font-size: 0.85rem; color: #6d95a3; }

/* ---------- 반응형 여백 ---------- */
@media (min-width: 480px) {
  .hero { padding-top: 56px; }
}
@media (min-width: 1280px) {
  .hero, .split-section, .spec-section, .gallery-section, .notice-section, .faq-section, .related-section, .cta-section {
    padding-left: 40px;
    padding-right: 40px;
  }
}