:root{
  --bg:#0c0a14;--panel:#16121f;--panel2:#1f1830;--line:rgba(255,255,255,.09);
  --text:#f6f4fb;--muted:#b3aec6;--accent:#b57bff;--accent2:#ff6fae;
  --on-accent:#1c0f2e;
  --radius:22px;--shadow:0 24px 60px rgba(10,5,20,.45);--max:1040px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(circle at 90% 0,rgba(181,123,255,.13),transparent 27%),radial-gradient(circle at 0 22%,rgba(255,111,174,.09),transparent 30%),var(--bg);color:var(--text);font-family:Pretendard,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit;text-decoration:none}button,input{font:inherit}
.shell{width:min(calc(100% - 28px),var(--max));margin:auto}
.top{position:sticky;top:0;z-index:30;background:rgba(12,10,20,.82);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.top-inner{height:66px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:11px;font-weight:900;letter-spacing:-.03em}
.brand-icon{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;color:var(--on-accent);background:linear-gradient(135deg,var(--accent),var(--accent2));font-size:21px}
.brand small{display:block;font-size:10px;color:var(--muted);letter-spacing:.13em}
.back-link{padding:9px 13px;border:1px solid var(--line);border-radius:12px;color:var(--muted);font-size:13px}
.hero{padding:72px 0 58px;text-align:center}
.badge{display:inline-block;margin:0 0 15px;padding:7px 11px;border:1px solid rgba(181,123,255,.3);border-radius:999px;color:var(--accent);font-size:12px;font-weight:850;background:rgba(181,123,255,.08)}
.hero h1{margin:0;font-size:clamp(42px,9vw,74px);line-height:1;letter-spacing:-.065em}
.hero h1 em{font-style:normal;color:transparent;background:linear-gradient(90deg,var(--accent),var(--accent2));background-clip:text;-webkit-background-clip:text}
.hero-copy{max-width:600px;margin:20px auto 26px;color:var(--muted);font-size:17px}
.primary-btn,.action-btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:14px;font-weight:850}
.primary-btn{padding:14px 21px;background:var(--accent);color:var(--on-accent)}
.materials{padding:22px 0 78px}
.section-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:18px}
.section-title h2{margin:0;font-size:31px;letter-spacing:-.045em}
.section-title p{margin:4px 0 0;color:var(--muted);font-size:14px}
.section-title strong{color:var(--accent)}
.search-box{height:52px;display:flex;align-items:center;gap:10px;padding:0 15px;border:1px solid var(--line);background:var(--panel);border-radius:15px}
.search-box input{width:100%;border:0;outline:0;background:none;color:var(--text)}
.categories{display:flex;gap:8px;overflow:auto;padding:13px 0 18px;scrollbar-width:none}
.category-btn{white-space:nowrap;border:1px solid var(--line);background:var(--panel);color:var(--muted);padding:9px 13px;border-radius:999px;font-size:13px;font-weight:800}
.category-btn.active{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
.card{overflow:hidden;border:1px solid var(--line);background:linear-gradient(180deg,var(--panel2),var(--panel));border-radius:var(--radius);transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(181,123,255,.35)}
.card-image{display:block;aspect-ratio:16/10;background:#251d3a;overflow:hidden}
.card-image img{width:100%;height:100%;object-fit:cover;display:block}
.card-body{padding:17px}
.card-meta{color:var(--accent);font-size:12px;font-weight:800}
.card h3{margin:8px 0 7px;font-size:20px;letter-spacing:-.035em}
.card p{height:43px;overflow:hidden;margin:0;color:var(--muted);font-size:13px;line-height:1.55}
.card-actions{display:grid;grid-template-columns:1fr auto;gap:8px;margin-top:16px}
.action-btn{padding:11px 12px;background:var(--accent);color:var(--on-accent);cursor:pointer}
.share-mini{width:44px;border:1px solid var(--line);background:#271f3d;color:white;border-radius:13px;cursor:pointer}
.empty,.loading{grid-column:1/-1;padding:60px 20px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius);color:var(--muted)}
footer{border-top:1px solid var(--line);padding:26px 0 calc(26px + env(safe-area-inset-bottom));color:var(--muted);font-size:12px}
.detail-wrap{padding:34px 0 75px}
.detail-card{overflow:hidden;border:1px solid var(--line);background:var(--panel);border-radius:26px;box-shadow:var(--shadow)}
.detail-image{background:#241c38}
.detail-image img{display:block;width:100%;max-height:70vh;object-fit:contain;margin:auto}
.detail-body{padding:clamp(20px,5vw,38px)}
.detail-meta{color:var(--accent);font-size:13px;font-weight:850}
.detail-title{font-size:clamp(29px,6vw,48px);letter-spacing:-.055em;line-height:1.05;margin:12px 0}
.detail-desc{color:var(--muted);font-size:16px;white-space:pre-wrap}
.detail-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin-top:26px}
.detail-actions a,.detail-actions button{display:flex;align-items:center;justify-content:center;text-decoration:none;min-height:48px;border-radius:14px;border:1px solid var(--line);background:var(--panel2);color:white;font-weight:850;cursor:pointer}
.detail-actions .main-action{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.not-found{padding:60px 25px;text-align:center}
.toast{position:fixed;left:50%;bottom:28px;z-index:100;transform:translate(-50%,20px);opacity:0;pointer-events:none;padding:11px 16px;border-radius:12px;background:#f8fafc;color:#111827;font-size:13px;font-weight:800;transition:.2s}
.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:780px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.hero{padding:52px 0 42px}.card-grid{grid-template-columns:1fr}.detail-actions{grid-template-columns:1fr}.card p{height:auto}.shell{width:min(calc(100% - 20px),var(--max))}}


.admin-wrap{padding:32px 0 70px;display:grid;grid-template-columns:minmax(0,420px) 1fr;gap:20px}
.admin-panel{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:22px}
.admin-form label{display:block;margin-bottom:15px;color:var(--muted);font-size:13px;font-weight:800}
.admin-form input,.admin-form textarea{width:100%;margin-top:7px;border:1px solid var(--line);background:var(--panel2);color:white;border-radius:13px;padding:12px;outline:none}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check-row{display:flex!important;align-items:center;gap:9px}
.check-row input{width:auto;margin:0}
.image-preview{min-height:170px;margin:-5px 0 16px;border:1px dashed var(--line);border-radius:16px;display:grid;place-items:center;color:var(--muted);overflow:hidden}
.image-preview img{width:100%;height:230px;object-fit:cover}
.admin-actions,.admin-toolbar{display:flex;gap:9px;flex-wrap:wrap}
.secondary-btn,.danger-btn{border:1px solid var(--line);border-radius:13px;padding:11px 14px;background:var(--panel2);color:white;font-weight:800;cursor:pointer}
.danger-btn{background:rgba(255,90,110,.12);color:#ff8c9d;border-color:rgba(255,90,110,.22)}
.file-label{display:inline-flex;align-items:center;cursor:pointer}
.file-label input{display:none}
.admin-list{display:grid;gap:11px}
.admin-item{display:grid;grid-template-columns:100px 1fr auto;gap:13px;align-items:center;border:1px solid var(--line);background:var(--panel2);border-radius:17px;padding:11px}
.admin-item img{width:100px;height:76px;object-fit:cover;border-radius:12px;background:#251d3a}
.admin-item h3{margin:4px 0;font-size:16px}
.admin-item p{margin:0;color:var(--muted);font-size:12px;max-height:38px;overflow:hidden}
.admin-item-buttons{display:grid;gap:7px}
@media(max-width:850px){.admin-wrap{grid-template-columns:1fr}.admin-panel{padding:17px}}
@media(max-width:560px){.form-grid{grid-template-columns:1fr}.admin-item{grid-template-columns:76px 1fr}.admin-item img{width:76px;height:70px}.admin-item-buttons{grid-column:1/-1;grid-template-columns:1fr 1fr}}


.admin-form select{width:100%;margin-top:7px;border:1px solid var(--line);background:var(--panel2);color:white;border-radius:13px;padding:12px;outline:none}
.media-frame{width:100%;height:min(78vh,900px);border:0;background:white}
.media-video{display:block;width:100%;aspect-ratio:16/9;border:0;background:#000}
.audio-stage{padding:24px;display:grid;gap:18px;place-items:center}
.audio-stage img{max-height:380px;object-fit:contain;border-radius:18px}
.audio-stage audio{width:min(700px,100%)}
.link-stage{text-align:center;padding-bottom:24px}
.link-stage img{max-height:560px;object-fit:contain}
.link-stage p{color:var(--muted)}
.share-sheet{position:fixed;inset:0;z-index:120;display:none;align-items:end;justify-content:center;background:rgba(0,0,0,.68);backdrop-filter:blur(7px)}
.share-sheet.open{display:flex}
.share-sheet-box{position:relative;width:min(100%,560px);background:var(--panel);border:1px solid var(--line);border-radius:26px 26px 0 0;padding:24px 20px calc(24px + env(safe-area-inset-bottom));box-shadow:var(--shadow)}
.share-sheet-box h3{text-align:center;margin:0 0 18px}
.sheet-close{position:absolute;right:16px;top:14px;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--panel2);color:white}
.share-options{display:grid;grid-template-columns:repeat(5,1fr);gap:9px}
.share-options button{min-height:84px;border:1px solid var(--line);background:var(--panel2);color:white;border-radius:16px;font-size:22px}
.share-options span{display:block;margin-top:7px;color:var(--muted);font-size:11px;font-weight:800}
.qr-area{display:none;text-align:center;margin-top:20px;padding:18px;background:white;border-radius:18px;color:#111}
.qr-area.show{display:block}
.qr-area #qrcode{display:flex;justify-content:center}
.qr-area p{margin:10px 0 0;font-size:12px}
@media(max-width:520px){.share-options{grid-template-columns:repeat(3,1fr)}}


.top-actions{display:flex;gap:8px;align-items:center}
.logout-btn{cursor:pointer;background:transparent}
.login-page{min-height:100vh;display:grid;place-items:center}
.login-shell{width:min(calc(100% - 28px),430px)}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:26px;padding:30px;box-shadow:var(--shadow)}
.login-brand{margin-bottom:28px}
.login-card h1{margin:0 0 8px;font-size:34px;letter-spacing:-.05em}
.login-card p{color:var(--muted)}
.login-card form{display:grid;gap:12px;margin:24px 0}
.login-card input{width:100%;border:1px solid var(--line);background:var(--panel2);color:white;border-radius:14px;padding:14px}
.login-back{display:block;text-align:center}
.stats-layout{grid-template-columns:1fr}
.stats-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.stats-table-wrap{overflow:auto}
.stats-table{width:100%;border-collapse:collapse;min-width:560px}
.stats-table th,.stats-table td{text-align:left;padding:14px;border-bottom:1px solid var(--line)}
.stats-table th{color:var(--muted);font-size:12px}
@media(max-width:700px){.stats-cards{grid-template-columns:repeat(2,1fr)}.top-actions{gap:5px}.top-actions .back-link{padding:8px 9px;font-size:11px}}



/* ── 게시판 ── */
.top-nav{display:flex;gap:14px;align-items:center}
.board-wrap{padding:36px 0 70px}
.board-write-toggle{margin:6px 0 18px}
.board-form{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:20px;margin-bottom:22px}
.board-form label{display:block;margin-bottom:14px;color:var(--muted);font-size:13px;font-weight:800}
.board-form input,.board-form textarea,.board-form select{width:100%;margin-top:7px;border:1px solid var(--line);background:var(--panel2);color:white;border-radius:13px;padding:12px;outline:none}
.board-form .image-preview{min-height:90px;display:grid;place-items:center;border:1px dashed var(--line);border-radius:13px;color:var(--muted);font-size:13px;margin-bottom:14px;overflow:hidden}
.board-form .image-preview img{max-width:100%;max-height:220px;border-radius:10px}
.board-form-actions{display:flex;gap:10px}
.board-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.board-tags span{font-size:12px;color:var(--muted);background:var(--panel2);border:1px solid var(--line);padding:5px 10px;border-radius:999px}
.board-modal{position:fixed;inset:0;z-index:90;background:rgba(8,5,16,.8);display:grid;place-items:center;padding:18px;overflow-y:auto}
.board-modal[hidden]{display:none}
.board-modal-panel{position:relative;width:min(760px,100%);max-height:calc(100vh - 40px);overflow-y:auto;background:var(--panel);border:1px solid var(--line);border-radius:22px}
.board-modal-close{position:sticky;top:10px;margin:10px 10px 0 auto;display:grid;place-items:center;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--panel2);color:white;cursor:pointer;z-index:2}
.board-modal .detail-image img{width:100%;display:block}
.board-modal .detail-body{padding:20px}

.board-notice{background:rgba(255,111,174,.06);border:1px solid rgba(255,111,174,.25);border-radius:16px;padding:16px 18px;margin-bottom:18px}
.board-notice strong{display:block;color:#ff9cc6;font-size:13px;margin-bottom:8px}
.board-notice ul{margin:0;padding-left:18px}
.board-notice li{font-size:12.5px;color:var(--muted);line-height:1.8}

/* ── 모바일 최적화 · 가로/세로 대응 ── */

/* iOS 입력 확대 방지 (16px 미만이면 포커스 시 자동 줌) */
input,select,textarea{font-size:16px}

/* 노치·펀치홀 안전 영역 (가로모드에서 좌우 잘림 방지) */
body{padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}
.toast{bottom:calc(28px + env(safe-area-inset-bottom))}

/* 동적 뷰포트 높이(주소창 접힘 대응) */
.login-page{min-height:100vh;min-height:100dvh}
.board-modal-panel{max-height:calc(100vh - 40px);max-height:calc(100dvh - 40px)}

/* 가로 스크롤 카테고리 관성 스크롤 */
.categories{-webkit-overflow-scrolling:touch}

/* 초소형 세로 화면 (≤400px) */
@media(max-width:400px){
  .top-inner{height:58px}
  .brand-icon{width:34px;height:34px;font-size:18px;border-radius:11px}
  .brand b{font-size:14px}
  .top-nav{gap:7px}
  .back-link{padding:8px 10px;font-size:12px}
  .section-title{flex-direction:column;align-items:flex-start;gap:6px}
  .section-title h2{font-size:25px}
  .card h3{font-size:17px}
  .hero h1{font-size:clamp(34px,11vw,48px)}
  .hero-copy{font-size:15px}
  .board-form{padding:15px}
  .board-notice{padding:13px 14px}
  .board-form-actions{flex-direction:column}
  .board-form-actions button{width:100%}
  .detail-body,.board-modal .detail-body{padding:16px}
  .share-options button{min-height:74px;font-size:19px}
}

/* 모바일 가로모드 (높이가 낮은 화면) */
@media(orientation:landscape) and (max-height:520px){
  .top-inner{height:52px}
  .hero{padding:26px 0 22px}
  .hero h1{font-size:clamp(30px,6vh,44px)}
  .hero-copy{margin:12px auto 16px;font-size:14px}
  .card-grid{grid-template-columns:repeat(3,1fr)}

  /* 상세/모달: 이미지가 화면을 다 덮지 않게 */
  .detail-image img{max-height:62vh}
  .board-modal{padding:10px}
  .board-modal-panel{max-height:calc(100vh - 20px);max-height:calc(100dvh - 20px)}
  .board-modal .detail-image img{max-height:56vh;object-fit:contain;background:#202938}
  .media-frame{height:82vh}
  .audio-stage img{max-height:36vh}
  .link-stage img{max-height:44vh}

  /* 공유 시트: 바닥 시트 대신 중앙 카드로 (세로 공간 부족) */
  .share-sheet{align-items:center;padding:10px}
  .share-sheet-box{border-radius:22px;max-height:calc(100vh - 20px);overflow-y:auto;padding:18px 18px calc(18px + env(safe-area-inset-bottom))}
  .share-options button{min-height:64px;font-size:18px}
  .qr-area{padding:12px}
  .qr-area #qrcode img,.qr-area #qrcode canvas{width:150px!important;height:150px!important}

  /* 로그인: 카드가 화면을 넘지 않게 */
  .login-shell{width:min(calc(100% - 28px),620px)}
  .login-card{padding:20px 26px}
  .login-card h1{font-size:24px}
  .login-brand{margin-bottom:14px}
  .login-card form{margin:14px 0;gap:9px}

  /* 게시판 작성 폼: 2열 배치로 세로 길이 절약 */
  .board-form .form-grid{grid-template-columns:1fr 1fr}

  /* 관리자: 좌우 분할 유지 */
  .admin-wrap{grid-template-columns:minmax(0,380px) 1fr}
}

/* 태블릿 가로 (~1024px) */
@media(min-width:781px) and (max-width:1024px){
  .card-grid{grid-template-columns:repeat(3,1fr);gap:14px}
  .card h3{font-size:18px}
}

/* 화면 회전 시 모달/시트 위치 재계산 부드럽게 */
@media(prefers-reduced-motion:no-preference){
  .board-modal-panel,.share-sheet-box{transition:max-height .15s}
}

/* ── 문서 페이지 · 푸터 링크 ── */
.doc-wrap{padding:38px 0 80px;max-width:760px}
.doc-wrap h1{font-size:clamp(30px,6vw,42px);letter-spacing:-.05em;margin:0 0 6px}
.doc-date{color:var(--muted);font-size:13px;margin:0 0 28px}
.doc-wrap h2{font-size:19px;letter-spacing:-.03em;margin:32px 0 10px;color:var(--accent)}
.doc-wrap p{color:#d7dce6;font-size:15px;line-height:1.85;margin:0 0 12px}
.doc-wrap ol{margin:0 0 12px;padding-left:20px}
.doc-wrap li{color:#d7dce6;font-size:15px;line-height:1.85;margin-bottom:4px}
.doc-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:40px;padding-top:22px;border-top:1px solid var(--line)}
.doc-links a{padding:10px 15px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--muted);font-size:13px;font-weight:800}
.footer-inner{display:flex;flex-direction:column;gap:12px;align-items:center;text-align:center}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.footer-links a{color:var(--muted);font-size:12.5px;font-weight:800}
.footer-links a:hover{color:var(--text)}

/* ── 대표 자료 · 제목 목록 · 페이지네이션 ── */
.list-heading{font-size:21px;letter-spacing:-.03em;margin:34px 0 13px}
.list-heading[hidden]{display:none}
#cardGrid[hidden]{display:none}
.title-list{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;background:var(--panel);overflow:hidden}
.title-row{display:grid;grid-template-columns:86px 1fr auto;align-items:center;gap:12px;padding:15px 17px;border-bottom:1px solid var(--line);transition:.15s}
.title-row:last-child{border-bottom:0}
.title-row:hover{background:var(--panel2)}
.title-row-cat{color:var(--accent);font-size:12px;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.title-row-title{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.title-row-date{color:var(--muted);font-size:12px;white-space:nowrap}
.title-list .empty{border:0;border-radius:0}
.pagination{display:flex;justify-content:center;align-items:center;gap:7px;margin-top:20px;flex-wrap:wrap}
.page-btn{min-width:40px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--muted);font-weight:800;cursor:pointer}
.page-btn:hover:not(:disabled){background:var(--panel2);color:var(--text)}
.page-btn.active{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.page-btn:disabled{opacity:.35;cursor:default}
.page-gap{color:var(--muted);padding:0 3px}
@media(max-width:540px){
  .title-row{grid-template-columns:1fr auto;gap:6px 10px}
  .title-row-cat{display:none}
  .title-row-title{font-size:14px}
}