/* =====================================================
   sub_visual.css — 서브 배너 / 서브 레이아웃 / 사이드메뉴 스킨 CSS
   ===================================================== */

/* ── 서브 배너 ─────────────────────────────────────── */
.sub-banner {
  /* Set fixed height */
  height: 200px;
  /* Background image */
  /* Dark overlay using a semi‑transparent gradient */
  background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)),
    url('https://images.unsplash.com/photo-1644325349124-d1756b79dd42?q=80&w=1775&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D') center/cover no-repeat;
  /* Ensure the image keeps its aspect ratio on all devices */
  background-size: cover;
  /* Center text both horizontally and vertically */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
}
.sub-banner h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: 12px;
}

/* ── 브레드크럼 ────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  background: transparent;
  padding: 0;
  margin: 0;
  font-size: .85rem;
  opacity: .85;
}
.breadcrumb a {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  transition: color .15s;
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { color: rgba(255,255,255,.7); }

/* ── 서브 콘텐츠 래퍼 (사이드메뉴 포함) ───────────── */
.sub-wrap {
  display: block;
}
.sub-wrap.with-left-menu {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: start;
}

/* 서브메뉴 미사용 시: 본문만 전폭 (CSS로 비주얼 아래 가로 메뉴 등 직접 배치 가능) */
.sub-wrap.sub-wrap--full {
  display: block;
}
.sub-wrap.sub-wrap--full .sub-content {
  width: 100%;
  max-width: 100%;
}

.sub-content { min-width: 0; }

/* ── 좌측 사이드메뉴 ───────────────────────────────── */
.sidemenu {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.sidemenu-title {
  padding: 14px 18px;
  font-size: .95rem;
  font-weight: 700;
  color: var(--white);
  background: var(--primary);
  letter-spacing: .03em;
}
.sidemenu ul {
  list-style: none; margin: 0; padding: 8px 0;
}
.sidemenu ul li a {
  display: block;
  padding: 10px 18px;
  font-size: .9rem;
  color: var(--text);
  text-decoration: none;
  transition: .15s;
  border-left: 3px solid transparent;
}
.sidemenu ul li a:hover {
  color: var(--primary);
  background: #f0f7ff;
  border-left-color: var(--primary);
}
.sidemenu ul li a.active {
  color: var(--primary);
  font-weight: 700;
  background: #eff6ff;
  border-left-color: var(--primary);
}

/* ── 서브 탭 메뉴 ──────────────────────────────────── */
.sub-tab-menu {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 28px;
  gap: 0;
}
.sub-tab-menu a {
  padding: 10px 20px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: .15s;
}
.sub-tab-menu a:hover { color: var(--primary); }
.sub-tab-menu a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ── 반응형 ────────────────────────────────────────── */
@media (max-width: 768px) {
  .sub-wrap.with-left-menu {
    grid-template-columns: 1fr;
  }
  .sidemenu {
    margin-bottom: 20px;
  }
  .sidemenu ul {
    display: flex; flex-wrap: wrap; padding: 6px;
  }
  .sidemenu ul li a {
    padding: 7px 14px;
    border-left: none;
    border-radius: 6px;
    font-size: .85rem;
  }
  .sidemenu ul li a:hover,
  .sidemenu ul li a.active {
    border-left-color: transparent;
  }
}