:root{
  --bg:#f4f6fa; --surface:#fff; --line:#e6e9f0; --text:#1b2433; --muted:#6b7589;
  --brand:#1e4fd8; --brand-d:#173ea9; --brand-soft:#eaf0ff; --navy:#0f1b3d;
  --green:#12936a; --green-bg:#e4f6ef; --amber:#b7740a; --amber-bg:#fdf1d9;
  --red:#d03b3b; --red-bg:#fde8e8; --blue:#2563eb; --blue-bg:#e6eeff;
  --radius:12px; --shadow:0 1px 2px rgba(16,24,40,.05),0 1px 3px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:14.5px/1.5 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg)}
a{color:var(--brand);text-decoration:none}
h1,h2,h3{margin:0;line-height:1.25}
.ic{width:18px;height:18px;flex:none}

/* Shell */
.shell{display:flex;min-height:100vh}
.sidebar{width:248px;background:var(--navy);color:#c9d3ee;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:30;transition:transform .2s}
.brand{display:flex;gap:12px;align-items:center;padding:20px 20px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#3b6cf5,#1e4fd8);color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px}
.brand strong{display:block;color:#fff;font-size:15px}
.brand small{color:#8fa0cc;font-size:12px}
.sidebar nav{padding:14px 12px;display:flex;flex-direction:column;gap:2px;flex:1}
.sidebar nav a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:9px;color:#b8c4e6;font-weight:500}
.sidebar nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.sidebar nav a.active{background:var(--brand);color:#fff}
.sidebar-foot{padding:16px 20px;border-top:1px solid rgba(255,255,255,.08);font-size:13px}
.sidebar-foot a{color:#8fa0cc}
.main{flex:1;margin-left:248px;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:14px;padding:14px 28px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.top-title{flex:1;min-width:0}
.top-title h1{font-size:19px;font-weight:650}
.top-title span{color:var(--muted);font-size:13px}
.user{display:flex;align-items:center;gap:12px}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:600;font-size:13px}
.user-meta{line-height:1.2}
.user-meta strong{display:block;font-size:13.5px}
.user-meta small{color:var(--muted);font-size:12px}
.icon-btn{border:0;background:transparent;color:var(--muted);width:36px;height:36px;border-radius:9px;display:grid;place-items:center;cursor:pointer}
.icon-btn:hover{background:var(--bg);color:var(--text)}
.menu-btn{display:none}
.content{padding:26px 28px;flex:1}
.foot{padding:18px 28px;color:var(--muted);font-size:12.5px}
.scrim{display:none}

/* Cards, grid */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.card-h h2{font-size:15.5px;font-weight:600}
.card-b{padding:20px}
.grid{display:grid;gap:18px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:2fr 1fr}
.mt{margin-top:22px}
.stat{padding:18px 20px;display:flex;flex-direction:column;gap:4px;position:relative;overflow:hidden}
.stat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c,var(--brand))}
.stat span{color:var(--muted);font-size:13px;font-weight:500}
.stat b{font-size:28px;font-weight:700;letter-spacing:-.5px}
.stat small{color:var(--muted)}

/* Buttons & forms */
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--surface);color:var(--text);padding:9px 15px;border-radius:9px;font:inherit;font-weight:550;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--bg)}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d)}
.btn-danger{color:var(--red)}
.btn-sm{padding:6px 10px;font-size:13px}
.btn-ghost{border-color:transparent;background:transparent}
label.f{display:block;font-weight:550;font-size:13px;margin-bottom:6px}
input[type=text],input[type=email],input[type=password],input[type=date],input[type=file],select,textarea{width:100%;padding:9px 12px;border:1px solid #d3d9e5;border-radius:9px;font:inherit;background:#fff;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:2px solid #bcd0ff;border-color:var(--brand)}
.field{margin-bottom:14px}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px}
.filters{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.filters .field{margin:0;min-width:180px;flex:1}
.hint{color:var(--muted);font-size:12.5px}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:18px;font-weight:500;border:1px solid}
.alert-success{background:var(--green-bg);color:#0b6b4c;border-color:#bfe8d8}
.alert-error{background:var(--red-bg);color:#a02727;border-color:#f6c5c5}

/* Tables */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);text-align:left;padding:11px 20px;background:#fafbfd;border-bottom:1px solid var(--line);font-weight:600;white-space:nowrap}
td{padding:12px 20px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fafbfe}
.num{text-align:center}
.actions{display:flex;gap:6px;justify-content:flex-end}
.empty{padding:44px 20px;text-align:center;color:var(--muted)}
.name{font-weight:550}
.sub{color:var(--muted);font-size:12.5px}

/* Badges */
.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:600}
.b-green{background:var(--green-bg);color:var(--green)}
.b-amber{background:var(--amber-bg);color:var(--amber)}
.b-red{background:var(--red-bg);color:var(--red)}
.b-blue{background:var(--blue-bg);color:var(--blue)}
.b-gray{background:#eef0f5;color:var(--muted)}

/* Class cards */
.class-card{padding:18px 20px;display:flex;flex-direction:column;gap:12px}
.class-card h3{font-size:15.5px}
.class-meta{display:flex;justify-content:space-between;align-items:center}

/* Attendance roster */
.roster-bar{position:sticky;top:67px;z-index:10;display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:12px 20px;background:#fff;border-bottom:1px solid var(--line)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:3px 11px;border-radius:99px;font-size:12.5px;font-weight:600}
.seg{display:inline-flex;border:1px solid #d3d9e5;border-radius:9px;overflow:hidden}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label{padding:6px 13px;cursor:pointer;font-weight:600;font-size:13px;color:var(--muted);border-right:1px solid #d3d9e5;background:#fff;min-width:42px;text-align:center}
.seg label:last-of-type{border-right:0}
.seg label:hover{background:var(--bg)}
.seg input:focus-visible+label{outline:2px solid var(--brand);outline-offset:-2px}
.seg input[value=P]:checked+label{background:var(--green);color:#fff}
.seg input[value=L]:checked+label{background:#e6a117;color:#fff}
.seg input[value=A]:checked+label{background:var(--red);color:#fff}
.seg input[value=E]:checked+label{background:var(--blue);color:#fff}
.remark{max-width:220px;padding:6px 10px}
.rowno{color:var(--muted);width:44px}

/* Bars */
.bars{display:flex;align-items:flex-end;gap:14px;height:170px;padding-top:10px}
.bar{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
.bar i{display:block;width:100%;max-width:46px;border-radius:7px 7px 0 0;background:var(--brand);min-height:3px}
.bar i.low{background:#e6a117}
.bar i.none{background:#dfe4ee}
.bar b{font-size:12px}
.bar small{color:var(--muted);font-size:11.5px}
.progress{height:8px;background:#e9edf5;border-radius:99px;overflow:hidden;min-width:90px}
.progress i{display:block;height:100%;background:var(--green);border-radius:99px}
.progress i.warn{background:#e6a117}.progress i.bad{background:var(--red)}
.rate{display:flex;align-items:center;gap:10px}

/* Dialog */
dialog{border:0;border-radius:14px;padding:0;width:min(480px,94vw);box-shadow:0 20px 50px rgba(15,27,61,.25)}
dialog::backdrop{background:rgba(15,27,61,.45)}
dialog form{padding:22px}
dialog h2{margin-bottom:16px;font-size:17px}
.dlg-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}

/* Login */
.login{min-height:100vh;display:grid;grid-template-columns:1.1fr 1fr}
.login-art{background:linear-gradient(150deg,#0f1b3d,#1e4fd8);color:#fff;padding:56px;display:flex;flex-direction:column;justify-content:space-between}
.login-art h2{font-size:34px;line-height:1.2;max-width:420px;letter-spacing:-.5px}
.login-art p{color:#c4d2f7;max-width:420px}
.login-art .brand{border:0;padding:0}
.login-form{display:grid;place-items:center;padding:32px}
.login-box{width:min(380px,100%)}
.login-box h1{font-size:24px;margin-bottom:6px}
.login-box>p{color:var(--muted);margin:0 0 24px}
.login-box .btn{width:100%;justify-content:center;padding:11px}

@media (max-width:1000px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3,.g2{grid-template-columns:1fr}
}
@media (max-width:860px){
  .sidebar{transform:translateX(-100%)}
  body.nav-open .sidebar{transform:none}
  body.nav-open .scrim{display:block;position:fixed;inset:0;background:rgba(15,27,61,.45);z-index:25}
  .main{margin-left:0}
  .menu-btn{display:grid}
  .topbar{padding:12px 16px}
  .content{padding:18px 16px}
  .user-meta{display:none}
  .login{grid-template-columns:1fr}
  .login-art{display:none}
  .roster-bar{top:61px}
}
@media (max-width:560px){
  .g4{grid-template-columns:1fr 1fr;gap:12px}
  th,td{padding:10px 12px}
  .stat b{font-size:24px}
}
@media print{
  .sidebar,.topbar,.filters,.btn,.foot{display:none!important}
  .main{margin:0}
  body{background:#fff}
}

/* Teacher attendance additions */
input[type=time],input[type=month]{width:100%;padding:9px 12px;border:1px solid #d3d9e5;border-radius:9px;font:inherit;background:#fff;color:var(--text)}
.clock-card{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;padding:28px;background:linear-gradient(135deg,#0f1b3d,#1e4fd8);color:#fff;border:0}
.clock-card #clockTime{font-size:46px;font-weight:700;letter-spacing:-1px;line-height:1.1;font-variant-numeric:tabular-nums}
.clock-card #clockDate{color:#c4d2f7;margin-top:4px}
.clock-card .sched{margin-top:14px;display:flex;gap:8px;flex-wrap:wrap}
.clock-card .pill{background:rgba(255,255,255,.14);padding:4px 12px;border-radius:99px;font-size:13px}
.clock-actions{display:flex;flex-direction:column;gap:10px;min-width:210px}
.clock-actions .btn{justify-content:center;padding:13px 18px;font-size:15px;border:0}
.btn-in{background:#19b37d;color:#fff}.btn-in:hover{background:#12936a}
.btn-out{background:#fff;color:var(--navy)}.btn-out:hover{background:#e8eefc}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.today-line{display:flex;gap:28px;flex-wrap:wrap;padding:18px 20px}
.today-line div span{display:block;color:var(--muted);font-size:12.5px}
.today-line div b{font-size:17px}
tr.off td{background:#fafbfd;color:var(--muted)}
tr.today td{background:#f3f7ff}
.mon{font-variant-numeric:tabular-nums}
.print-only{display:none}
.sign{display:grid;grid-template-columns:1fr 1fr;gap:60px;margin-top:48px}
.sign div{border-top:1px solid #333;padding-top:6px;text-align:center;font-size:13px}
@media (max-width:700px){.clock-card{grid-template-columns:1fr;padding:22px}.clock-card #clockTime{font-size:36px}.clock-actions{min-width:0}}
@media print{
  .print-only{display:block}
  .card{box-shadow:none;border-color:#999}
  .stat{display:none}
  th{background:#eee!important;color:#000}
  td,th{padding:5px 8px;font-size:12px}
  .content{padding:0}
  .badge{background:none!important;color:#000!important;padding:0}
}

/* School logo */
.brand-logo{width:44px;height:44px;object-fit:contain;flex:none;filter:drop-shadow(0 1px 3px rgba(0,0,0,.35))}
.brand-logo-lg{width:84px;height:84px}
.login-art .brand{gap:18px}
.login-art .brand strong{font-size:20px}
/* Staff photos */
.person{display:flex;gap:12px;align-items:center}
.av{width:40px;height:40px;border-radius:50%;object-fit:cover;flex:none;border:1px solid var(--line)}
.av-i{display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px}
.photo-field{display:flex;gap:14px;align-items:center}
.photo-prev{width:76px;height:76px;border-radius:50%;background:#eef1f7 center/cover no-repeat;border:1px solid var(--line);flex:none}
/* DTR: a weekend day with no taps reads SATURDAY / SUNDAY across the IN/OUT columns */
td.wk{text-align:center;font-weight:700;letter-spacing:.35em;font-size:12px;color:var(--muted);background:#f1f4fa;text-indent:.35em}
@media print{td.wk{background:none!important;color:#000}}
td.wk.lv{color:var(--blue);background:var(--blue-bg)}
td.wk.ab{color:var(--red);background:var(--red-bg)}

/* ===== Tables: search, compact row menus, steadier columns ===== */
.tools{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.tsearch{width:min(280px,100%);padding:8px 12px;border:1px solid #d3d9e5;border-radius:9px;font:inherit;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236b7589' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='M21 21l-4.3-4.3'/%3E%3C/svg%3E") no-repeat 10px center/16px;padding-left:34px}
.tsearch:focus{outline:2px solid #bcd0ff;border-color:var(--brand)}
.badge{white-space:nowrap}
td.col-name{min-width:250px}
td.col-act{width:1%;text-align:right}
td.t-email{max-width:230px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
a.plain{color:inherit}a.plain:hover{color:var(--brand);text-decoration:underline}
.av-i{font-size:12.5px;letter-spacing:.02em}
tbody tr[hidden]{display:none}
details.menu{position:relative;display:inline-block}
details.menu>summary{list-style:none;cursor:pointer}
details.menu>summary::-webkit-details-marker{display:none}
details.menu[open]>summary{background:var(--bg);color:var(--text)}
.menu-list{position:fixed;z-index:60;min-width:190px;background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:0 14px 34px rgba(16,24,40,.18);padding:6px;display:flex;flex-direction:column;text-align:left}
.menu-list form{margin:0}
.menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 11px;border:0;background:none;border-radius:8px;font:inherit;font-weight:550;color:var(--text);cursor:pointer;text-align:left;text-decoration:none}
.menu-item:hover,.menu-item:focus-visible{background:var(--bg);outline:none}
.menu-item.danger{color:var(--red)}
.menu-item .ic{color:var(--muted)}
/* ===== Settings: tabs, notes, copy rows ===== */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:20px;overflow-x:auto}
.tab{border:0;background:none;padding:11px 16px;font:inherit;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tab:hover{color:var(--text)}
.tab[aria-selected=true]{color:var(--brand);border-bottom-color:var(--brand)}
.tab:focus-visible{outline:2px solid #bcd0ff;outline-offset:-2px;border-radius:6px}
.tab-panel[hidden]{display:none}
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media (max-width:900px){.cols2{grid-template-columns:1fr;gap:6px}}
h3.sect{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 12px;font-weight:700}
.note{background:#f5f8ff;border:1px solid #dfe8ff;color:#31415f;border-radius:10px;padding:12px 14px;font-size:13.5px;line-height:1.55;margin:6px 0 18px}
.copy-row{display:flex;gap:8px}
.copy-row input{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;background:#f7f9fc;text-overflow:ellipsis}

/* ===== Login: larger logo, what the system does ===== */
.brand-logo-lg{width:104px;height:104px}
.login-art h2{font-size:42px;max-width:480px}
.login-points{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:12px;color:#d6e0ff;max-width:440px}
.login-points li{display:flex;gap:12px;align-items:flex-start;line-height:1.45}
.login-points li::before{content:"";flex:none;width:20px;height:20px;margin-top:1px;border-radius:50%;background:rgba(255,255,255,.16) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center/12px no-repeat}.card-h .tools{flex:1;justify-content:flex-end;flex-wrap:nowrap}
.card-h .tools .hint{white-space:nowrap}
@media (max-width:900px){.card-h .tools{flex-wrap:wrap;justify-content:flex-start}}