:root{
  --bg:#f4f6fb; --card:#fff; --ink:#18212f; --muted:#586376; --line:#e1e6ef; --soft:#f0f3f9;
  --brand:#1f4e9c; --brand-d:#173d7c; --on-brand:#fff;
  --ok:#17693f; --ok-bg:#e4f4ea; --warn:#8a5a00; --warn-bg:#fff2d1; --err:#b42318; --err-bg:#fdeceb;
  --info:#1849a9; --info-bg:#e6eefc; --na:#667085; --na-bg:#eef0f4;
  --r:14px; --shadow:0 1px 2px rgba(16,24,40,.06),0 4px 14px rgba(16,24,40,.05);
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0f141c; --card:#171e29; --ink:#e8edf5; --muted:#9aa6b8; --line:#2a3342; --soft:#1d2531;
    --brand:#6ea0ff; --brand-d:#8db3ff; --on-brand:#0b1220;
    --ok:#6ee0a0; --ok-bg:#12301f; --warn:#f5c96a; --warn-bg:#3a2d0e; --err:#ff8d83; --err-bg:#3a1714;
    --info:#9dbcff; --info-bg:#16264a; --na:#9aa6b8; --na-bg:#232b38; --shadow:none;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.55;
  font-family:"Pretendard","Malgun Gothic","Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;font-size:16px}
a{color:var(--brand)}
.wrap{max-width:720px;margin:0 auto;padding:0 16px}
.wide .wrap,.wrap.wide{max-width:1180px}
.top{background:var(--card);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px;padding-top:8px;padding-bottom:8px}
.brand{font-weight:700;font-size:17px;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.brand small{display:block;font-weight:500;font-size:12px;color:var(--muted)}
main{padding:20px 0 40px}
footer{color:var(--muted);font-size:13px;text-align:center;padding:18px 16px 36px}
h1{font-size:22px;margin:0 0 6px;letter-spacing:-.02em}
h2{font-size:18px;margin:0 0 12px;letter-spacing:-.01em}
.lead{color:var(--muted);margin:0 0 18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin:0 0 14px;box-shadow:var(--shadow)}
.card.hero{padding:20px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.row.between{justify-content:space-between}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.kv{display:grid;grid-template-columns:110px 1fr;gap:6px 12px;margin:0}
.kv dt{color:var(--muted);font-size:14px}
.kv dd{margin:0;word-break:break-all}
.muted{color:var(--muted)} .small{font-size:13px}
.big{font-size:26px;font-weight:700;letter-spacing:-.02em}

label{display:block;font-weight:600;font-size:14px;margin:0 0 6px}
input[type=text],input[type=password],input[type=number],input[type=tel],input[type=date],select,textarea{
  width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:inherit;min-height:46px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:transparent}
.field{margin:0 0 14px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.hint{font-size:13px;color:var(--muted);margin:5px 0 0}
input[type=file]{width:100%;padding:10px;border:1px dashed var(--line);border-radius:10px;background:var(--soft);color:var(--ink)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:10px;padding:12px 18px;min-height:46px;
  font:inherit;font-weight:700;cursor:pointer;background:var(--brand);color:var(--on-brand);text-decoration:none}
.btn:hover{background:var(--brand-d)}
.btn.block{width:100%}
.btn.ghost{background:var(--soft);color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--line)}
.btn.sm{min-height:34px;padding:6px 12px;font-size:14px;border-radius:8px}
.btn.danger{background:var(--err);color:#fff}
.linkbtn{background:none;border:0;color:var(--brand);font:inherit;text-decoration:underline;cursor:pointer;padding:0}

.chip{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:13px;font-weight:700;white-space:nowrap}
.chip.ok{background:var(--ok-bg);color:var(--ok)}
.chip.warn,.chip.check{background:var(--warn-bg);color:var(--warn)}
.chip.err,.chip.need{background:var(--err-bg);color:var(--err)}
.chip.info,.chip.review{background:var(--info-bg);color:var(--info)}
.chip.na{background:var(--na-bg);color:var(--na)}

.status{display:flex;gap:14px;align-items:center;border-radius:12px;padding:16px;margin:0 0 4px}
.status .dot{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-size:22px;flex:none}
.status.ok{background:var(--ok-bg)} .status.ok .dot{background:var(--ok);color:#fff}
.status.check{background:var(--warn-bg)} .status.check .dot{background:var(--warn);color:#fff}
.status.need{background:var(--err-bg)} .status.need .dot{background:var(--err);color:#fff}
.status.review{background:var(--info-bg)} .status.review .dot{background:var(--info);color:#fff}
.status b{font-size:18px;display:block}

.flash{padding:12px 14px;border-radius:10px;margin:0 0 12px;font-weight:600}
.flash.ok{background:var(--ok-bg);color:var(--ok)}
.flash.err{background:var(--err-bg);color:var(--err)}
.flash.warn{background:var(--warn-bg);color:var(--warn)}

.checklist{list-style:none;padding:0;margin:0}
.checklist li{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid var(--line)}
.checklist li:last-child{border:0}

.issue{border:1px solid var(--line);border-left-width:5px;border-radius:12px;padding:14px;margin:0 0 12px;background:var(--card)}
.issue.need{border-left-color:var(--err)} .issue.check{border-left-color:var(--warn)}
.issue.review{border-left-color:var(--info)} .issue.resolved{border-left-color:var(--ok);opacity:.85}
.issue h3{margin:0 0 4px;font-size:16px}
.issue p{margin:0 0 10px}
.files{list-style:none;padding:0;margin:8px 0 0;font-size:14px}
.files li{display:flex;justify-content:space-between;gap:8px;padding:6px 0;border-top:1px dashed var(--line)}
.note{font-size:13px;color:var(--err);margin-top:2px}

table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:9px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:var(--soft);font-size:13px;color:var(--muted);position:sticky;top:0}
td.num,th.num{text-align:right;white-space:nowrap}
tr:hover td{background:var(--soft)}
.tablewrap{overflow:auto;max-height:70vh;border:1px solid var(--line);border-radius:12px;background:var(--card)}
.stat{padding:14px;border-radius:12px;background:var(--card);border:1px solid var(--line)}
.stat b{display:block;font-size:24px;letter-spacing:-.02em}
.stat span{color:var(--muted);font-size:13px}
.filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;align-items:end}
.sticky-bar{position:sticky;bottom:0;background:var(--card);border-top:1px solid var(--line);padding:10px 12px;display:flex;gap:8px;flex-wrap:wrap;align-items:center;border-radius:0 0 12px 12px}
details summary{cursor:pointer;font-weight:700}
.secure{display:flex;gap:8px;align-items:flex-start;font-size:13px;color:var(--muted);background:var(--soft);border-radius:10px;padding:10px 12px}
@media (max-width:560px){
  .kv{grid-template-columns:92px 1fr}
  .two{grid-template-columns:1fr 1fr}
  .big{font-size:22px}
}

/* ───── 홈페이지(학교 → 반 → 이름) ───── */
.brand{display:flex;align-items:center;gap:10px}
.logo{height:34px;width:auto;display:block}
.center{text-align:center}
.crumbs{font-size:14px;color:var(--muted);margin:0 0 12px}
.crumbs a{color:var(--muted)} .crumbs b{color:var(--ink)}
.hero-home{text-align:center;padding:10px 0 4px}
.hero-logo{max-width:260px;max-height:110px;width:auto;height:auto;margin:0 auto 12px;display:block}
.hero-wordmark{display:inline-block;font-weight:800;font-size:20px;color:var(--brand);letter-spacing:-.02em;margin:0 0 10px;padding:6px 16px;border:2px solid var(--brand);border-radius:999px}
.hero-home h1{font-size:26px}
.steps{list-style:none;display:flex;gap:8px;justify-content:center;flex-wrap:wrap;padding:0;margin:0 0 20px;color:var(--muted);font-size:14px}
.steps li{display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:5px 12px 5px 6px}
.steps b{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--brand);color:var(--on-brand);font-size:12px}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin:0 0 18px}
.tile{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;text-decoration:none;color:var(--ink);
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 10px 14px;box-shadow:var(--shadow);transition:transform .12s,border-color .12s}
.tile:hover,.tile:focus-visible{transform:translateY(-2px);border-color:var(--brand);outline:none}
.tile-name{font-weight:700;font-size:15px;line-height:1.3;word-break:keep-all}
.tile-sub{font-size:13px;color:var(--muted)}
.emblem{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;overflow:hidden;flex:none;background:var(--soft)}
.emblem img{width:100%;height:100%;object-fit:contain;display:block}
.emblem.sm{width:56px;height:56px}
.badge{color:#fff;font-weight:800;font-size:19px;letter-spacing:-.03em;word-break:keep-all;text-align:center;line-height:1.1;padding:4px}
.emblem.sm.badge{font-size:14px}
.badge.c0{background:#1f4e9c}.badge.c1{background:#17693f}.badge.c2{background:#8a3b9c}.badge.c3{background:#b4531a}
.badge.c4{background:#0f766e}.badge.c5{background:#a3304a}.badge.c6{background:#52607a}.badge.c7{background:#7a5a00}
.school-head{display:flex;align-items:center;gap:14px;margin:0 0 16px}
.school-head h1{margin:0 0 2px}
.school-head .lead{margin:0}
.folders{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:18px 14px;margin:0 0 20px}
.folder{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:92px;text-decoration:none;
  color:#3b2a00;background:#f6c453;border-radius:4px 10px 10px 10px;margin-top:12px;box-shadow:0 2px 0 #d9a52a}
.folder::before{content:"";position:absolute;left:0;top:-11px;width:46%;height:12px;background:#f6c453;border-radius:8px 10px 0 0}
.folder:hover,.folder:focus-visible{background:#ffd56b;outline:2px solid var(--brand);outline-offset:2px}
.folder:hover::before,.folder:focus-visible::before{background:#ffd56b}
.folder-name{font-weight:800;font-size:20px}
.folder-sub{font-size:13px;opacity:.8}
@media (prefers-color-scheme:dark){
  .folder{color:#2b1f00}
}
.names{display:grid;grid-template-columns:repeat(auto-fill,minmax(128px,1fr));gap:10px;margin:0 0 14px}
.name-btn{display:flex;align-items:center;gap:8px;min-height:52px;padding:8px 12px;text-decoration:none;color:var(--ink);
  background:var(--card);border:1px solid var(--line);border-radius:12px}
.name-btn:hover,.name-btn:focus-visible{border-color:var(--brand);outline:2px solid var(--brand);outline-offset:1px}
.name-num{font-size:13px;color:var(--muted);min-width:30px}
.name-text{font-weight:700;font-size:17px}
.lockcard{text-align:center}
.lockcard form{text-align:left}
.lock{width:68px;height:68px;border-radius:50%;background:var(--info-bg);color:var(--info);display:grid;place-items:center;margin:0 auto 10px}

/* ───── 로고(가로형 이미지) ───── */
.logo{background:#fff;border-radius:8px;padding:3px 8px;height:38px;box-sizing:border-box}
.hero-logo{background:#fff;border-radius:16px;padding:12px 22px;box-sizing:content-box;max-width:min(300px,72vw);max-height:90px}
.emblem-img{width:100%;height:76px;display:grid;place-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;box-sizing:border-box}
.emblem-img img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block}
.emblem-img.sm{width:auto;min-width:130px;max-width:200px;height:52px;padding:5px 10px;flex:none}
@media (max-width:560px){.logo + .brand-text{display:none}}

@media (max-width:560px){.school-head{flex-direction:column;align-items:flex-start;gap:10px}}