/* ============================================================
   C&S TOOL - products-info 공통 스타일 (products.css 기반)
   브랜드 섹션 분리형 레이아웃 추가
   ============================================================ */
:root {
  --red: #D8222A; --red-dark: #A01820; --red-glow: rgba(216,34,42,0.25);
  --gray: #8A8A8A; --gray-light: #C8C8C8; --silver: #E8E8E8;
  --dark: #0F0F0F; --dark2: #181818; --dark3: #222222; --dark4: #2C2C2C;
  --white: #FFFFFF;
  --font-en: 'Bebas Neue', 'Barlow Condensed', sans-serif;
  --font-ko: 'Noto Sans KR', sans-serif;
  --nav-h: 80px;
  /* 브랜드 컬러 — 모두 흰색 계열로 통일 */
  --brand-color: #FFFFFF;
  --brand-muted: rgba(255,255,255,0.65);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
/* ⚠️ html/body에 overflow:hidden 또는 overflow:clip 절대 금지 → sticky 무력화됨 */
body { background: var(--dark); color: var(--white); font-family: var(--font-ko); font-size: 15px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }

/* ── PAGE HERO ── */
/* overflow:hidden → clip으로 교체 (clip은 스크롤 컨테이너를 만들지 않아 sticky 유지) */
.page-hero { padding: calc(var(--nav-h) + 60px) 0 60px; background: linear-gradient(135deg, var(--dark2) 0%, var(--dark) 100%); border-bottom: 1px solid var(--dark4); position: relative; overflow: clip; }
.page-hero::before { content: ''; position: absolute; right: 0; top: 0; bottom: 0; width: 40%; background: radial-gradient(ellipse at right, rgba(216,34,42,0.08), transparent 70%); }
.page-hero-inner { max-width: 1380px; margin: 0 auto; padding: 0 40px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--gray); margin-bottom: 20px; }
.breadcrumb a:hover { color: var(--red); }
.breadcrumb span { color: var(--dark4); }
.page-tag { font-family: 'Barlow Condensed', sans-serif; font-size: 11px; letter-spacing: 4px; color: var(--red); text-transform: uppercase; margin-bottom: 12px; display: flex; align-items: center; gap: 12px; }
.page-tag::before { content: ''; width: 24px; height: 2px; background: var(--red); }
.page-title { font-family: 'Bebas Neue', sans-serif; font-size: clamp(40px, 5vw, 72px); line-height: 1; margin-bottom: 12px; }
.page-desc { color: var(--gray); font-size: 14px; font-weight: 300; }

/* ── LAYOUT ── */
.page-body { max-width: 1380px; margin: 0 auto; padding: 60px 40px; }
.page-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;   /* ← sticky 필수 조건 */
}

/* ── SIDEBAR ── */
.sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  align-self: start;    /* ← grid 안에서 sticky 필수 */
  background: var(--dark3);
  border: 1px solid var(--dark4);
  /* 높이를 화면에 고정 → 하위메뉴 펼쳐도 레이아웃 shift 없음 */
  height: calc(100vh - var(--nav-h) - 48px);
  max-height: calc(100vh - var(--nav-h) - 48px);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--dark4) transparent;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--dark4); border-radius: 2px; }
.sidebar-title { padding: 18px 24px; border-bottom: 1px solid var(--dark4); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--gray); font-family: 'Barlow Condensed', sans-serif; }
.sidebar-menu { list-style: none; }
.sidebar-menu li a { display: block; padding: 14px 24px; font-size: 13px; color: var(--gray); border-bottom: 1px solid rgba(255,255,255,0.04); transition: all 0.2s; }
.sidebar-menu li a:hover, .sidebar-menu li.active a { color: white; background: rgba(216,34,42,0.08); border-left: 3px solid var(--red); padding-left: 21px; }
.sidebar-menu li.active a { color: white; }

/* ── SECTION HEADER ── */
.section-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--dark4); }
.section-header h2 { font-family: 'Bebas Neue', sans-serif; font-size: 32px; }
.section-header p { font-size: 13px; color: var(--gray); margin-top: 6px; }
.prod-count { font-size: 12px; color: var(--gray); }
.prod-count strong { color: var(--red); font-size: 20px; font-family: 'Bebas Neue', sans-serif; }

/* ── BRAND SECTION ── */
.brand-sections { display: flex; flex-direction: column; gap: 48px; }

.brand-section { border: 1px solid var(--dark4); }
.brand-section-header {
  display: flex; align-items: center; gap: 20px;
  padding: 20px 28px; border-bottom: 1px solid var(--dark4);
  position: relative; overflow: hidden;
}
.brand-section-header::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: rgba(255,255,255,0.4);
}

.brand-logo-badge {
  display: flex; align-items: center; justify-content: center;
  padding: 6px 16px; border-radius: 3px;
  font-family: 'Barlow Condensed', sans-serif; font-size: 15px; font-weight: 800; letter-spacing: 2px;
  flex-shrink: 0;
  background: rgba(255,255,255,0.07);
  color: #FFFFFF;
  border: 1px solid rgba(255,255,255,0.2);
}

.brand-section-info { flex: 1; }
.brand-section-name { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.brand-section-desc { font-size: 12px; color: var(--gray); }
.brand-prod-count { font-family: 'Bebas Neue', sans-serif; font-size: 28px; color: rgba(255,255,255,0.3); flex-shrink: 0; }

/* ── PRODUCT GRID ── */
.brand-prod-body { padding: 24px; }
.prod-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 2px; }
.prod-card { background: var(--dark2); padding: 24px 20px; display: flex; flex-direction: column; gap: 10px; transition: background 0.3s; border: 1px solid transparent; }
.prod-card:hover { background: var(--dark4); border-color: var(--dark4); }
.prod-card.is-new { border-top: 2px solid var(--red); }
.prod-card-top { display: flex; justify-content: space-between; align-items: center; }
.prod-brand { font-family: 'Barlow Condensed', sans-serif; font-size: 12px; letter-spacing: 2px; color: var(--red); text-transform: uppercase; }
.prod-badges { display: flex; gap: 6px; }
.badge-new { background: var(--red); color: white; font-size: 10px; padding: 2px 7px; border-radius: 2px; font-weight: 700; }
.badge-instock { background: rgba(34,197,94,0.15); color: #22c55e; font-size: 10px; padding: 2px 7px; border-radius: 2px; }
.badge-stock { background: rgba(255,255,255,0.08); color: var(--gray); font-size: 10px; padding: 2px 7px; border-radius: 2px; }
.prod-img { width: 100%; aspect-ratio: 4/3; overflow: hidden; background: #111; display: flex; align-items: center; justify-content: center; margin-bottom: 4px; }
.prod-img img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.3s; }
.prod-card:hover .prod-img img { transform: scale(1.05); }
.prod-img-empty { font-size: 32px; color: var(--dark4); }
.prod-code { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; color: var(--gray); letter-spacing: 1px; }
.prod-name { font-size: 15px; font-weight: 700; }
.prod-name-en { font-size: 11px; color: var(--gray); letter-spacing: 1px; }
.prod-spec-row { display: flex; gap: 12px; font-size: 12px; }
.spec-label { color: var(--gray); min-width: 44px; flex-shrink: 0; }
.spec-val { color: var(--gray-light); }
.prod-desc { font-size: 12px; color: var(--gray); line-height: 1.7; flex: 1; padding-top: 4px; border-top: 1px solid rgba(255,255,255,0.05); }
.prod-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 11px; color: var(--gray); background: var(--dark4); padding: 3px 8px; border-radius: 2px; }
.prod-actions { display: flex; gap: 8px; padding-top: 8px; border-top: 1px solid rgba(255,255,255,0.05); }
.btn-quote-sm { flex: 1; background: var(--red); color: white; text-align: center; padding: 8px 0; border-radius: 3px; font-size: 12px; font-weight: 700; transition: background 0.2s; }
.btn-quote-sm:hover { background: var(--red-dark); }
.btn-inquiry-sm { flex: 1; border: 1px solid var(--dark4); color: var(--gray); text-align: center; padding: 8px 0; border-radius: 3px; font-size: 12px; transition: all 0.2s; }
.btn-inquiry-sm:hover { border-color: var(--gray); color: white; }

/* ── 제품 없음 ── */
.empty-state { text-align: center; padding: 60px 40px; color: var(--gray); }
.empty-state .icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 13px; }

/* ── CATEGORY CARDS (index) ── */
.cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; }
.cat-card { background: var(--dark3); padding: 48px 40px; display: flex; flex-direction: column; gap: 16px; transition: background 0.3s; cursor: pointer; position: relative; overflow: hidden; }
.cat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform 0.35s ease; }
.cat-card:hover { background: var(--dark4); }
.cat-card:hover::before { transform: scaleX(1); }
.cat-icon { font-size: 36px; }
.cat-name { font-size: 22px; font-weight: 700; }
.cat-name-en { font-family: 'Barlow Condensed', sans-serif; font-size: 12px; letter-spacing: 3px; color: var(--gray); text-transform: uppercase; }
.cat-desc { font-size: 13px; color: var(--gray); line-height: 1.7; }
.cat-brands { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.cat-brand-badge {
  font-size: 10px; font-weight: 700; padding: 3px 9px; border-radius: 2px;
  font-family: 'Barlow Condensed', sans-serif; letter-spacing: 1px;
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.15);
  transition: all 0.2s;
}
.cat-card:hover .cat-brand-badge { color: #fff; border-color: rgba(255,255,255,0.35); }
.cat-sub-list { display: flex; flex-wrap: wrap; gap: 8px; }
.cat-sub-tag { font-size: 12px; border: 1px solid var(--dark4); color: var(--gray); padding: 4px 12px; border-radius: 2px; transition: all 0.2s; }
.cat-card:hover .cat-sub-tag { border-color: rgba(216,34,42,0.4); color: var(--gray-light); }
.cat-arrow { font-size: 13px; color: var(--red); margin-top: auto; display: flex; align-items: center; gap: 8px; transition: gap 0.2s; }
.cat-card:hover .cat-arrow { gap: 16px; }

/* ── FOOTER ── */
footer { background: var(--dark); border-top: 1px solid var(--dark4); padding: 40px 0; }
.footer-simple { max-width: 1380px; margin: 0 auto; padding: 0 40px; display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--gray); }
.footer-simple a { color: var(--gray); }
.footer-simple a:hover { color: white; }

/* ── LOADING ── */
.loading-wrap { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 80px 40px; color: var(--gray); gap: 16px; }
.loading-spinner { width: 36px; height: 36px; border: 3px solid var(--dark4); border-top-color: var(--red); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 960px) {
  /* 태블릿: 사이드바 sticky 유지, 너비만 축소 */
  .page-layout { grid-template-columns: 200px 1fr; }
  .cat-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  /* ── v3.1 공통 헤더: .hd-nav, .btn-nav-quote 등은 common.js/info-common.js가 처리
     여기서는 info.css 고유 레이아웃만 보정 ── */

  /* hero 상단 padding: --nav-h(80px) 유지, 좌우 20px */
  .page-hero-inner { padding-left: 20px; padding-right: 20px; }
  .page-hero { padding-top: calc(var(--nav-h) + 32px); padding-bottom: 32px; }
  .page-title { font-size: clamp(32px, 8vw, 56px); }

  /* body 좌우 패딩 */
  .page-body { padding: 28px 16px; }

  /* sidebar: sticky 해제, 1열 레이아웃 */
  .page-layout { gap: 24px; grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    max-height: none;
    overflow-y: visible;
    overflow-x: visible;
  }

  /* 제품 그리드: 모바일 1열 */
  .prod-grid { grid-template-columns: 1fr; }
  .brand-prod-body { padding: 14px; }

  /* cat-grid */
  .cat-grid { grid-template-columns: 1fr; }
  .cat-card { padding: 28px 20px; }

  /* section-header 세로 정렬 */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 20px;
    padding-bottom: 14px;
  }

  /* brand-section-header 줄바꿈 허용 */
  .brand-section-header {
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 16px;
  }

  /* footer */
  .footer-simple {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    padding: 0 16px;
  }
}