/* বিদ্যালয় ব্যবস্থাপনা — স্টাইল */
:root{
  --bg:#F3F5F2; --surface:#FFFFFF; --ink:#18231F; --muted:#5C6B65; --line:#D9E0DB;
  --accent:#1F5C4A; --accent-ink:#FFFFFF; --chalk:#E8B931; --soft:#E6EEE9; --side:#17302A; --side-ink:#DCE8E2;
  --good:#2E7D4F; --bad:#B23A2E; --warn:#A86A00;
  --display:"Tiro Bangla","Noto Serif Bengali",Georgia,serif;
  --body:"Hind Siliguri","Noto Sans Bengali",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root{
  --bg:#111816; --surface:#18211E; --ink:#E4ECE7; --muted:#93A39C; --line:#2A3631;
  --accent:#5FB596; --accent-ink:#0D1714; --chalk:#E8C14F; --soft:#1F2C27; --side:#0C1311; --side-ink:#CFDDD6;
  --good:#6CC28E; --bad:#F08074; --warn:#E3A53C; color-scheme:dark}}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.55}
a{color:var(--accent)}
h1,h2,h3{text-wrap:balance}
h2{font-family:var(--display);font-weight:400;font-size:21px;margin:0 0 12px}
h2 small{font-family:var(--body);font-size:13px;color:var(--muted);margin-left:6px}
h3{font-size:15px;margin:8px 0 0}
.muted{color:var(--muted)} .small{font-size:13px}
.good{color:var(--good)!important} .bad{color:var(--bad)!important} .warn{color:var(--warn)!important}

/* লেআউট */
.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.side{background:var(--side);color:var(--side-ink);padding:18px 12px;display:flex;flex-direction:column;gap:14px;position:sticky;top:0;height:100vh;overflow-y:auto}
.brand a{color:#fff;text-decoration:none;font-family:var(--display);font-size:20px;line-height:1.2;display:block}
.brand span{font-size:12px;opacity:.7}
.side nav{display:grid;gap:2px}
.side nav a{color:var(--side-ink);text-decoration:none;padding:7px 10px;border-radius:6px;font-weight:500}
.side nav a:hover{background:rgba(255,255,255,.07)}
.side nav a.on{background:var(--chalk);color:#1b1b12;font-weight:700}
.navlabel{font-size:11px;letter-spacing:.08em;opacity:.6;margin:12px 10px 2px}
.me{margin-top:auto;border-top:1px solid rgba(255,255,255,.12);padding-top:12px;font-size:13px;display:grid;gap:6px}
.me b{display:block;color:#fff}
.melinks{display:flex;gap:12px;align-items:center}
.melinks a,.linkbtn{color:var(--side-ink);font:inherit;background:none;border:0;padding:0;cursor:pointer;text-decoration:underline}
.melinks form{margin:0}
.main{padding:20px 24px 48px;min-width:0}
.main.solo{max-width:none;padding:16px}
.topbar{display:flex;align-items:center;gap:10px;border-bottom:3px solid var(--ink);padding-bottom:10px;margin-bottom:18px}
.topbar h1{font-family:var(--display);font-weight:400;font-size:clamp(24px,3.4vw,32px);margin:0}
.menubtn{display:none;font-size:20px;background:none;border:1px solid var(--line);color:var(--ink);border-radius:6px;padding:2px 10px;cursor:pointer}
@media (max-width:860px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;inset:0 auto 0 0;width:260px;z-index:20;transform:translateX(-100%);transition:transform .2s}
  .side.open{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.35)}
  .menubtn{display:block}
  .main{padding:14px 16px 40px}
}

/* কার্ড ও গ্রিড */
.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:16px;min-width:0}
.card.narrow{max-width:620px}
.cardhead{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:6px}
.grid2{display:grid;grid-template-columns:340px minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:1000px){.grid2{grid-template-columns:1fr}}
.mt{margin-top:20px} .mt-s{margin-top:12px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.stats.two{grid-template-columns:repeat(2,1fr);margin-bottom:14px}
.stats.three{grid-template-columns:repeat(3,1fr);gap:8px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:12px 14px}
.stat b{display:block;font-family:var(--mono);font-size:24px;font-weight:500;font-variant-numeric:tabular-nums;line-height:1.3}
.stat small{color:var(--muted);font-size:13px}

/* ফর্ম */
.form{display:grid;gap:10px}
label{display:grid;gap:4px;font-size:13px;font-weight:600;color:var(--muted)}
label i{color:var(--bad);font-style:normal}
input,select{font:inherit;font-size:15px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:8px 10px;width:100%;min-width:0}
input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible{outline:2px solid var(--chalk);outline-offset:2px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:420px){.row{grid-template-columns:1fr}}
fieldset{border:1px solid var(--line);border-radius:6px;padding:8px 10px;margin:0}
legend{font-size:13px;font-weight:600;color:var(--muted);padding:0 4px}
.chips{display:flex;flex-wrap:wrap;gap:6px 14px}
.chk{display:inline-flex;align-items:center;gap:6px;font-weight:500;color:var(--ink);font-size:14px}
.chk input{width:auto;margin:0;accent-color:var(--accent)}
.btns{display:flex;gap:8px;flex-wrap:wrap}
.btn{display:inline-block;font:inherit;font-weight:600;border:0;border-radius:6px;padding:9px 16px;cursor:pointer;background:var(--accent);color:var(--accent-ink);text-decoration:none;text-align:center}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.sm{padding:4px 10px;font-size:13px}
.tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:10px}
.tools input,.tools select{width:auto;flex:1 1 150px}
.tools.inline{margin:0}
.tools .yr{flex:0 0 96px}

/* টেবিল */
.tablebox{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;font-size:12px;letter-spacing:.04em;color:var(--muted);font-weight:600;border-bottom:2px solid var(--line);padding:8px;white-space:nowrap}
td{border-bottom:1px solid var(--line);padding:8px;vertical-align:top}
td.num,th.num{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.mono{font-family:var(--mono);font-size:13px;white-space:nowrap}
tr.editing td{background:var(--soft)}
.act{white-space:nowrap}
.act a,.act button{font:inherit;font-size:12px;border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:5px;padding:2px 8px;cursor:pointer;text-decoration:none;display:inline-block}
.act form{display:inline;margin:0}
.act .del{color:var(--bad)}
.empty{color:var(--muted);text-align:center;padding:28px 8px}
.total{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:16px;margin-top:10px;font-weight:600}
.total b{font-family:var(--mono);font-weight:500}
.pager{display:flex;flex-wrap:wrap;gap:4px;margin-top:12px}
.pager a{border:1px solid var(--line);border-radius:5px;padding:2px 9px;text-decoration:none;color:var(--ink);font-family:var(--mono)}
.pager a.on{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.pill{display:inline-block;font-size:12px;font-weight:700;padding:1px 8px;border-radius:99px;background:var(--soft);color:var(--accent);white-space:nowrap}
.pill.bad{color:var(--bad)} .pill.good{color:var(--good)} .pill.warn{color:var(--warn)}
.note{font-size:12.5px;color:var(--muted);margin:8px 0 0}
.flash{border-radius:6px;padding:10px 14px;margin-bottom:12px;border:1px solid var(--line);background:var(--surface);border-left:4px solid var(--good)}
.flash.err{border-left-color:var(--bad)} .flash.warn{border-left-color:var(--warn)}

/* রুটিন */
.routine{border-collapse:separate;border-spacing:4px;min-width:720px}
.routine th{border:0;text-align:center}
.routine td{background:var(--soft);border:0;border-radius:6px;text-align:center;font-size:13px;min-width:96px;height:58px;vertical-align:middle}
.routine td.day{background:transparent;font-weight:700;text-align:left}
.routine td small{display:block;color:var(--muted)}

/* হাজিরা */
.seg{display:inline-flex;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.seg label{display:block;font-size:13px;font-weight:500;cursor:pointer}
.seg label+label{border-left:1px solid var(--line)}
.seg input{position:absolute;opacity:0;width:1px;height:1px}
.seg span{display:block;padding:4px 10px;color:var(--muted)}
.seg input:focus-visible+span{outline:2px solid var(--chalk);outline-offset:-2px}
.seg .kP input:checked+span{background:var(--good);color:var(--surface)}
.seg .kA input:checked+span{background:var(--bad);color:var(--surface)}
.seg .kL input:checked+span{background:var(--warn);color:var(--surface)}

/* লগইন */
.login{max-width:400px;margin:8vh auto 0;display:grid;gap:16px}
.loginbrand{text-align:center}
.loginbrand h1{font-family:var(--display);font-weight:400;font-size:30px;margin:0}
.loginbrand p{color:var(--muted);margin:4px 0 0}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}