/* ============================================
   PIOTECH - Sub Page Stylesheet
   ============================================ */

/* ---------- 인사말 (Greeting) ---------- */
.greeting {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
  align-items: stretch;
  margin-top: 20px;
}
.greeting-visual {
  position: relative;
  min-height: 480px;
  background: linear-gradient(135deg, #0b5fa6 0%, #1a3a5c 100%);
  border-radius: 6px;
  overflow: hidden;
}
.greeting-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 30%, rgba(95, 182, 232, 0.4) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(0, 184, 212, 0.3) 0%, transparent 50%);
}
.greeting-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 30px 30px;
}
.greeting-visual-text {
  position: absolute;
  bottom: 30px;
  left: 30px;
  color: #fff;
  z-index: 2;
}
.greeting-visual-text .label {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--color-sky);
  margin-bottom: 8px;
}
.greeting-visual-text .name {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.greeting-text h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 24px;
  letter-spacing: -0.02em;
}
.greeting-text h2 .accent { color: var(--color-primary); }
.greeting-text h2 .accent-light { color: var(--color-primary-light); }
.greeting-text p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-text-sub);
  margin: 0 0 16px;
}
.greeting-sign {
  margin-top: 30px;
  text-align: right;
  font-size: 14px;
  color: var(--color-text-sub);
}
.greeting-sign strong {
  font-size: 18px;
  color: var(--color-text);
  margin-left: 8px;
  letter-spacing: 0.1em;
}

/* ---------- 비전 (Vision) ---------- */
.vision-quote {
  text-align: center;
  margin: 40px 0 70px;
}
.vision-quote h2 {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0;
}
.vision-quote h2::before,
.vision-quote h2::after {
  display: inline-block;
  color: var(--color-primary);
  font-size: 36px;
  vertical-align: -8px;
  margin: 0 12px;
}
.vision-quote h2::before { content: '\201C'; }
.vision-quote h2::after { content: '\201D'; }

.vision-diagram {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  aspect-ratio: 1 / 1;
}
.vision-diagram svg {
  width: 100%;
  height: auto;
  display: block;
}

.vision-labels {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  max-width: 800px;
  margin: 50px auto 0;
}
.vision-label-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  border-left: 3px solid var(--color-primary);
  background: var(--color-bg-soft);
}
.vision-label-card .num {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.4;
}
.vision-label-card .vname {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.vision-label-card .ven {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* ---------- 연혁 (History) ---------- */
.history-header {
  background: var(--color-primary-dark);
  color: #fff;
  text-align: center;
  padding: 18px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.1em;
  max-width: 800px;
  margin: 0 auto 50px;
  border-radius: 2px;
}
.history-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}
.history-timeline::before {
  content: '';
  position: absolute;
  left: 70px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-line);
}
.history-year-block {
  display: flex;
  gap: 50px;
  margin-bottom: 50px;
  position: relative;
}
.history-year {
  flex-shrink: 0;
  width: 60px;
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  padding-top: 2px;
}
.history-year::after {
  content: '';
  position: absolute;
  left: 65px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--color-primary);
  z-index: 1;
}
.history-events {
  flex: 1;
}
.history-event {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 5px 0;
  font-size: 14px;
  line-height: 1.7;
}
.history-event .month {
  flex-shrink: 0;
  font-weight: 700;
  color: var(--color-primary);
  width: 28px;
}
.history-event .desc {
  color: var(--color-text-sub);
}

/* ---------- 인증서 (Certificate) ---------- */
.cert-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--color-line);
}
.cert-info .total {
  font-size: 13px;
  color: var(--color-text-sub);
}
.cert-search {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-muted);
}
.cert-grid {
  display: grid;
  /* 0.8배 축소 효과 + 간격 2배 → 컬럼 5개로 늘려 카드 작게 + gap 48 */
  grid-template-columns: repeat(5, 1fr);
  gap: 48px 48px;
}
.cert-item {
  cursor: pointer;
  transition: transform var(--transition);
}
.cert-item:hover { transform: translateY(-4px); }
.cert-thumb {
  aspect-ratio: 3 / 4;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  overflow: hidden;
  position: relative;
}
.cert-thumb svg {
  width: 60%;
  height: auto;
  opacity: 0.4;
}
.cert-title {
  /* 가운데 정렬 + 글자 15px (원본 21px에서 70% 축소) */
  display: block;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
}
.cert-title .heart {
  /* 하트 아이콘 완전 숨김 */
  display: none;
}

/* ---------- 오시는 길 (Location) ---------- */
.location-map {
  width: 100%;
  height: 380px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: 30px;
  position: relative;
  overflow: hidden;
}
.location-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}
.location-info {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 14px;
}
.location-info dt {
  color: var(--color-text-muted);
  font-weight: 500;
}
.location-info dd {
  margin: 0;
  color: var(--color-text);
}

/* ---------- Brand CI ---------- */
.ci-section {
  margin-bottom: 60px;
}
.ci-section h2 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}
.ci-box {
  border: 1px solid var(--color-line);
  padding: 60px 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 80px;
  background: var(--color-bg-soft);
  border-radius: 4px;
}
.ci-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.ci-logo .mark { width: 56px; height: 62px; }
.ci-logo .text {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.ci-logo .text-en {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}
.ci-download {
  text-align: center;
  margin: 24px 0;
}
.ci-download a {
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid var(--color-line-dark);
  font-size: 12px;
  color: var(--color-text-sub);
  letter-spacing: 0.05em;
  transition: all var(--transition);
}
.ci-download a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.ci-explain {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 30px;
  margin-bottom: 40px;
}
.ci-explain h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
  height: fit-content;
}
.ci-explain p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-sub);
}
.symbol-box {
  border: 1px solid var(--color-line);
  padding: 50px;
  display: flex;
  justify-content: center;
  background: var(--color-bg-soft);
  margin-top: 16px;
}
.symbol-box .mark { width: 80px; height: 88px; }

.color-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 16px;
}
.color-card {
  padding: 24px;
  color: #fff;
  border-radius: 4px;
}
.color-card.blue { background: var(--color-primary); }
.color-card.sky { background: var(--color-sky); }
.color-card .cname {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}
.color-card .cinfo {
  font-size: 12px;
  opacity: 0.9;
  font-family: 'Menlo', monospace;
  letter-spacing: 0.05em;
}

/* ---------- 사업내용 (Business) ---------- */
.product-desc {
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-text-sub);
  margin-bottom: 40px;
  padding: 24px;
  background: var(--color-bg-soft);
  border-left: 3px solid var(--color-primary);
}
.product-visual {
  border: 1px solid var(--color-line);
  border-radius: 6px;
  padding: 40px;
  background: linear-gradient(135deg, #f7fafc 0%, #eef4f9 100%);
  margin-bottom: 50px;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-visual svg {
  width: 100%;
  max-width: 720px;
  height: auto;
}
.feature-list {
  margin-top: 30px;
}
.feature-list h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-text);
}
.feature-list ul li {
  padding: 12px 0 12px 22px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.7;
}
.feature-list ul li::before {
  content: '\25B6';
  position: absolute;
  left: 0;
  top: 12px;
  color: var(--color-primary);
  font-size: 10px;
}
.feature-list ul li strong {
  color: var(--color-text);
  margin-right: 6px;
}

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin: 30px 0 50px;
}
.product-card {
  border: 1px solid var(--color-line);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  cursor: pointer;
  transition: all var(--transition);
}
.product-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.product-card .pthumb {
  aspect-ratio: 4 / 3;
  background: #f7fafc;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  overflow: hidden;
}
.product-card .pthumb img,
.product-card .pthumb svg {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.product-card .pname {
  margin: 0;
  padding: 14px 16px 4px;
  text-align: center;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
}
.product-card .pspec {
  padding: 10px 16px 18px;
  border-top: 1px solid var(--color-line);
}
.product-card .pspec table {
  width: 100%;
  font-size: 12px;
  border-collapse: collapse;
  color: var(--color-text-sub);
}
.product-card .pspec td {
  padding: 4px 0;
  vertical-align: top;
}
.product-card .pspec td.lbl {
  width: 42px;
  color: #9ca3af;
}

/* Model code tabs */
.model-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-bottom: 30px;
  border-top: 1px solid var(--color-line);
  border-left: 1px solid var(--color-line);
}
.model-tabs a {
  padding: 14px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-sub);
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  transition: all var(--transition);
}
.model-tabs a:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary);
}
.model-tabs a.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ---------- 게시판 (Board) ---------- */
.board-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  margin-bottom: 0;
  border-bottom: 2px solid var(--color-text);
  font-size: 13px;
  color: var(--color-text-sub);
}
.board-table {
  width: 100%;
  border-collapse: collapse;
}
.board-table thead th {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 14px 10px;
  border-bottom: 1px solid var(--color-line);
  text-align: center;
}
.board-table tbody td {
  padding: 18px 10px;
  border-bottom: 1px solid var(--color-line);
  font-size: 14px;
  text-align: center;
  color: var(--color-text-sub);
}
.board-table tbody td.subject {
  text-align: left;
  color: var(--color-text);
  font-weight: 500;
  cursor: pointer;
}
.board-table tbody tr:hover {
  background: var(--color-bg-soft);
}
.board-table tbody tr:hover .subject {
  color: var(--color-primary);
}
.board-table .empty {
  padding: 80px 20px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
}

/* News (IST소식) layout */
.news-card-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.news-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-line);
  cursor: pointer;
}
.news-card .nimg {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-bg-soft);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 12px;
  overflow: hidden;
}
.news-card .nimg svg { width: 40%; opacity: 0.4; }
.news-card .nbody { padding: 8px 0; }
.news-card .ntitle {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.news-card .ntitle .heart { color: #ff5e87; font-size: 14px; }
.news-card:hover .ntitle { color: var(--color-primary); }
.news-card .ndate {
  font-size: 12px;
  color: var(--color-text-muted);
  margin: 0 0 14px;
}
.news-card .ndesc {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.7;
  margin: 0 0 16px;
}
.news-card .nmore {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
}
.pagination a, .pagination span {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  border: 1px solid var(--color-line);
  color: var(--color-text-sub);
  transition: all var(--transition);
}
.pagination a:hover { color: var(--color-primary); border-color: var(--color-primary); }
.pagination .current {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .cert-grid { grid-template-columns: repeat(3, 1fr); gap: 36px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .model-tabs { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .greeting { grid-template-columns: 1fr; gap: 30px; }
  .greeting-visual { min-height: 280px; }
  .greeting-text h2 { font-size: 24px; }
  .greeting-text p { font-size: 14px; }

  .vision-quote h2 { font-size: 20px; line-height: 1.5; }
  .vision-quote h2::before, .vision-quote h2::after { font-size: 24px; }
  .vision-labels { grid-template-columns: 1fr; gap: 16px; }

  .history-timeline::before { left: 40px; }
  .history-year-block { gap: 24px; }
  .history-year { width: 40px; font-size: 18px; }
  .history-year::after { left: 36px; }

  .cert-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .cert-title { font-size: 14px; }
  .location-info { grid-template-columns: 70px 1fr; font-size: 13px; }

  .ci-box { flex-direction: column; gap: 30px; padding: 30px 20px; }
  .ci-logo .text, .ci-logo .text-en { font-size: 22px; }
  .ci-explain { grid-template-columns: 1fr; gap: 16px; }
  .color-grid { grid-template-columns: 1fr; }

  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .model-tabs { grid-template-columns: repeat(2, 1fr); }
  .model-tabs a { font-size: 12px; padding: 10px 8px; }

  .board-table thead { display: none; }
  .board-table, .board-table tbody, .board-table tr, .board-table td { display: block; width: 100%; }
  .board-table tbody td { text-align: left; padding: 6px 10px; border-bottom: none; }
  .board-table tbody td.subject { padding-top: 14px; font-size: 15px; }
  .board-table tbody tr { padding: 8px 0; border-bottom: 1px solid var(--color-line); }

  .news-card { grid-template-columns: 1fr; gap: 14px; }
  .news-card .nimg { max-width: 100%; }
}