/* =====================================================================
   인증/특허 (certification/certification.php)
   ※ 별도 파일로 링크하거나 style.css 하단에 붙여넣어 사용하세요.
   ===================================================================== */

/* 가로 영역 확대 (+200px) */
.cert-section .container{max-width:1440px;width:min(100% - 48px,1440px)}

/* 섹션 간 구분 */
.cert-block{margin-top:44px}
.cert-block:first-of-type{margin-top:8px}
.cert-block-head{display:flex;align-items:center;gap:12px;margin:0 0 22px}
.cert-block-head h3{font-size:1.3rem;font-weight:800;color:var(--navy-800);margin:0}
.cert-block-head .bar{width:5px;height:22px;border-radius:3px;background:var(--brand-600)}
.cert-intro{max-width:920px;color:var(--ink-500);font-size:1.02rem;line-height:1.85;margin:0 0 30px}

/* 인증서 그리드 — 한 줄 5개(반응형 4/3/2) */
.cert-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:clamp(18px,2vw,30px)}
.cert-card{background:#fff;border:1px solid var(--line-200);border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;box-shadow:none}
.cert-card:hover{box-shadow:none}

/* 이미지 영역 — 박스를 여백 없이 완전히 채움(cover). 모든 카드 동일 비율 */
.cert-img{position:relative;background:var(--bg-050);overflow:hidden;aspect-ratio:1/1}
.cert-img > img{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:cover;padding:0;margin:0;transition:filter .3s var(--ease),transform .5s var(--ease)}
.cert-img .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--ink-400);font-size:.9rem}
/* 마우스 오버 시 부드럽게 확대 + 어두워짐 */
.cert-card:hover .cert-img > img{filter:brightness(.42);transform:scale(1.06)}
.cert-over{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  padding:22px;text-align:center;opacity:0;transition:opacity .3s var(--ease);pointer-events:none}
.cert-over p{margin:0;color:#fff;font-size:.92rem;line-height:1.7;font-weight:500}
.cert-card:hover .cert-over{opacity:1}

/* 확대보기 아이콘 */
.cert-zoom{position:absolute;top:10px;right:10px;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.9);border:1px solid var(--line-200);display:flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;transform:scale(.9);transition:opacity .25s,transform .25s,background .18s;z-index:2}
.cert-card:hover .cert-zoom,.patent-card:hover .cert-zoom{opacity:1;transform:scale(1)}
.cert-zoom:hover{background:#fff}
.cert-zoom svg{width:19px;height:19px;color:var(--navy-800)}

.cert-name{font-size:1.04rem;font-weight:800;color:#175d2e;margin:16px 16px 18px;line-height:1.35;text-align:center}

/* 특허증 카드 — 한 줄 3개 */
.patent-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2vw,30px)}
.patent-card{background:#fff;border:1px solid var(--line-200);border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow-1)}
.patent-img{position:relative;aspect-ratio:3/4;background:var(--bg-050);display:flex;align-items:center;justify-content:center;overflow:hidden}
.patent-img img{width:100%;height:100%;object-fit:contain;padding:12px;transition:transform .5s var(--ease)}
.patent-card:hover .patent-img img{transform:scale(1.06)}
.patent-body{padding:18px 20px 22px}
.patent-no{display:inline-block;font-size:.78rem;font-weight:700;color:var(--brand-700);
  background:rgba(30,122,76,.1);border-radius:6px;padding:3px 10px;margin-bottom:10px}
.patent-title{font-size:1rem;font-weight:700;color:var(--navy-800);line-height:1.5;margin:0 0 8px}
.patent-date{font-size:.85rem;color:var(--ink-400);margin:0}

/* 상표·디자인 등록/출원 표 */
.reg-table{width:100%;border-collapse:collapse;font-size:.95rem;background:#fff;
  border:1px solid var(--line-200);border-radius:12px;overflow:hidden}
.reg-table thead th{background:var(--navy-800);color:#fff;font-weight:700;font-size:.9rem;
  text-align:left;padding:13px 18px;letter-spacing:.01em}
.reg-table tbody td{padding:13px 18px;border-top:1px solid var(--line-200);color:var(--ink-700);vertical-align:middle}
.reg-table tbody tr:nth-child(even) td{background:var(--bg-050)}
.reg-table td.rt-name{font-weight:700;color:var(--navy-800)}
.reg-table td.rt-no{font-variant-numeric:tabular-nums;color:var(--ink-500)}
.reg-table td.rt-date{white-space:nowrap;color:var(--ink-500);font-variant-numeric:tabular-nums}
.reg-table td.rt-num{width:56px;text-align:center;color:var(--ink-400)}

/* 라이트박스(확대보기) */
.cert-lightbox{position:fixed;inset:0;z-index:2000;display:none;align-items:center;justify-content:center;
  background:rgba(15,20,15,.88);padding:5vh 5vw}
.cert-lightbox.open{display:flex}
.cert-lightbox img{max-width:min(92vw,760px);max-height:90vh;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.5);background:#fff}
.cert-lb-close{position:absolute;top:24px;right:28px;width:52px;height:52px;border-radius:50%;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .18s}
.cert-lb-close:hover{background:rgba(255,255,255,.28)}
.cert-lb-close svg{width:24px;height:24px}

@media (max-width:1200px){.cert-grid{grid-template-columns:repeat(4,1fr)}}
@media (max-width:980px){.cert-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .patent-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto}
  .reg-table thead th:nth-child(1),.reg-table td.rt-num{display:none}
  /* 터치 환경: 오버레이·확대 아이콘 항상 표시 */
  .cert-zoom{opacity:1;transform:none}
}
@media (max-width:480px){.cert-grid{grid-template-columns:1fr;max-width:320px;margin:0 auto}}