/* ==========================================================
   School ERP – Admin UI
   Palette: ink #16233B · school navy #1B3A6B · pencil mustard #E0A526
   ========================================================== */
:root{
  --ink:#16233B; --ink-2:#1F2F4D; --brand:#1B3A6B; --brand-2:#2A5190;
  --accent:#E0A526; --accent-soft:#FBF1D9;
  --bg:#F3F5F9; --card:#FFFFFF; --line:#E3E7EF; --line-2:#EEF1F6;
  --text:#1A2233; --muted:#6B7486;
  --ok:#1E8E5A; --ok-soft:#E3F4EB; --bad:#C8423B; --bad-soft:#FBE7E5; --warn:#B7791F; --warn-soft:#FCF3DF;
  --radius:10px; --radius-sm:7px;
  --sidebar:260px;
  --font:'Manrope',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:var(--font);font-size:14.5px;line-height:1.5;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--brand-2);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:1.15rem} h3{font-size:1rem}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.num,td.num,th.num{font-variant-numeric:tabular-nums;text-align:right}

/* ---------- Sidebar ---------- */
.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:var(--ink);color:#C9D2E3;display:flex;flex-direction:column;z-index:40;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#2c3d5e transparent}
.brand{display:flex;align-items:center;gap:12px;padding:20px 20px 18px;color:#fff;text-decoration:none!important;border-bottom:1px solid rgba(255,255,255,.07)}
.brand img{width:40px;height:40px;object-fit:contain;border-radius:8px;background:#fff}
.brand-mark{width:40px;height:40px;border-radius:9px;background:var(--accent);color:var(--ink);display:grid;place-items:center;font-weight:800;font-size:15px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px}
.brand-text small{color:#8C98B0;font-size:12px}
.nav{padding:10px 10px 40px}
.nav-group summary{list-style:none;cursor:pointer;padding:14px 12px 6px;font-size:12px;font-weight:700;color:#7E8BA5;display:flex;justify-content:space-between;align-items:center}
.nav-group summary::-webkit-details-marker{display:none}
.nav-group summary::after{content:"\F282";font-family:bootstrap-icons;font-size:10px;transition:transform .15s}
.nav-group[open] summary::after{transform:rotate(180deg)}
.nav a{display:flex;align-items:center;gap:11px;padding:8px 12px;margin:1px 0;border-radius:8px;color:#C9D2E3;font-weight:500;position:relative;text-decoration:none}
.nav a i{font-size:16px;width:18px;text-align:center;color:#8C98B0}
.nav a:hover{background:var(--ink-2);color:#fff}
.nav a.active{background:var(--ink-2);color:#fff}
.nav a.active i{color:var(--accent)}
.nav a.active::before{content:"";position:absolute;left:-10px;top:8px;bottom:8px;width:4px;border-radius:0 4px 4px 0;background:var(--accent)}

/* ---------- Main ---------- */
.main{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:30;height:64px;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:0 28px}
.page-title{font-size:1.15rem;margin:0;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:10px}
.user-chip{display:flex;align-items:center;gap:10px;padding-left:10px;border-left:1px solid var(--line)}
.user-chip span{display:flex;flex-direction:column;line-height:1.2}
.user-chip small{color:var(--muted);font-size:12px}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;display:grid!important;place-items:center;font-weight:700;font-size:13px}
.icon-btn{width:38px;height:38px;border-radius:9px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;color:var(--text);font-size:18px;cursor:pointer;text-decoration:none!important}
.icon-btn:hover{background:var(--line-2)}
.content{padding:26px 28px 48px;flex:1;max-width:1480px;width:100%}

/* ---------- Cards / grid ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:20px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.card-head h2,.card-head h3{margin:0}
.grid{display:grid;gap:20px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.span-2{grid-column:span 2}
.muted{color:var(--muted)}
.small{font-size:12.5px}
.row-flex{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spacer{flex:1}

/* stat tiles */
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;display:flex;gap:14px;align-items:flex-start}
.stat .ic{width:42px;height:42px;border-radius:10px;display:grid;place-items:center;font-size:19px;flex:none}
.stat .v{font-size:1.5rem;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums}
.stat .l{color:var(--muted);font-size:13px}
.ic-navy{background:#E6ECF6;color:var(--brand)} .ic-gold{background:var(--accent-soft);color:#9A6B09}
.ic-green{background:var(--ok-soft);color:var(--ok)} .ic-red{background:var(--bad-soft);color:var(--bad)}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{background:#F7F8FB;text-align:left;font-weight:600;color:#4A5468;font-size:12.5px;padding:11px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.table td{padding:11px 14px;border-bottom:1px solid var(--line-2);vertical-align:middle}
.table tr:last-child td{border-bottom:0}
.table tbody tr:hover{background:#FAFBFD}
.table .thumb{width:38px;height:38px;border-radius:8px;object-fit:cover;background:var(--line-2)}
.table tfoot td{font-weight:700;background:#F7F8FB}
.actions{display:flex;gap:6px;justify-content:flex-end;white-space:nowrap}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px 18px}
.form-grid .full{grid-column:1/-1}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:#3A4458}
.field .req{color:var(--bad)}
.input,.field input:not([type=checkbox]):not([type=radio]),.field select,.field textarea,select.input{width:100%;height:42px;padding:0 12px;border:1px solid #D5DBE6;border-radius:var(--radius-sm);background:#fff;font:inherit;color:var(--text);transition:border-color .15s,box-shadow .15s}
.field textarea{height:auto;min-height:110px;padding:10px 12px;resize:vertical}
.input:focus,.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(42,81,144,.14)}
.field .hint{font-size:12px;color:var(--muted);margin-top:4px}
.field .preview{margin-top:8px;max-height:80px;border-radius:6px}
.check{display:flex;align-items:center;gap:8px;font-weight:500}
.form-actions{display:flex;gap:10px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line-2)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:40px;padding:0 16px;border-radius:var(--radius-sm);border:1px solid transparent;font:inherit;font-weight:600;font-size:14px;cursor:pointer;text-decoration:none!important;white-space:nowrap;transition:background .15s}
.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-2)}
.btn-accent{background:var(--accent);color:var(--ink)}.btn-accent:hover{background:#CE951A}
.btn-light{background:#fff;border-color:#D5DBE6;color:var(--text)}.btn-light:hover{background:var(--line-2)}
.btn-danger{background:#fff;border-color:#EBC3C0;color:var(--bad)}.btn-danger:hover{background:var(--bad-soft)}
.btn-success{background:var(--ok);color:#fff}
.btn-sm{height:32px;padding:0 11px;font-size:13px}
.btn-lg{height:48px;padding:0 22px;font-size:15px}
.btn-block{width:100%}

/* ---------- Badges / alerts ---------- */
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600;background:var(--line-2);color:#4A5468}
.b-ok{background:var(--ok-soft);color:var(--ok)} .b-bad{background:var(--bad-soft);color:var(--bad)}
.b-warn{background:var(--warn-soft);color:var(--warn)} .b-info{background:#E6ECF6;color:var(--brand)}
.alert{padding:12px 16px;border-radius:var(--radius-sm);margin-bottom:18px;border:1px solid;font-weight:500}
.alert-success{background:var(--ok-soft);border-color:#BFE3CF;color:#17603F}
.alert-danger{background:var(--bad-soft);border-color:#F0C9C5;color:#8E2B25}
.alert-info{background:#E6ECF6;border-color:#C9D6EC;color:var(--brand)}
.alert-warning{background:var(--warn-soft);border-color:#EED9A8;color:#7A5212}

/* toolbar */
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar .input{width:auto;min-width:200px}
.pagination{display:flex;gap:6px;margin-top:16px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:34px;height:34px;display:grid;place-items:center;padding:0 10px;border:1px solid var(--line);border-radius:7px;background:#fff;font-weight:600;font-size:13px}
.pagination .cur{background:var(--brand);color:#fff;border-color:var(--brand)}
.empty{text-align:center;padding:48px 20px;color:var(--muted)}
.empty i{font-size:34px;display:block;margin-bottom:8px;color:#AEB6C6}

/* attendance chips */
.att-opts{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.att-opts input{display:none}
.att-opts label{padding:6px 12px;cursor:pointer;font-weight:700;font-size:13px;color:var(--muted);border-right:1px solid var(--line)}
.att-opts label:last-of-type{border-right:0}
.att-opts input[value=P]:checked+label{background:var(--ok);color:#fff}
.att-opts input[value=A]:checked+label{background:var(--bad);color:#fff}
.att-opts input[value=L]:checked+label{background:var(--warn);color:#fff}
.att-opts input[value=H]:checked+label{background:var(--brand);color:#fff}

/* list items */
.list{display:flex;flex-direction:column}
.list-item{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line-2)}
.list-item:last-child{border-bottom:0}
.list-item .grow{flex:1;min-width:0}
.list-item .title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.date-pill{width:48px;flex:none;text-align:center;border:1px solid var(--line);border-radius:8px;padding:4px 0;line-height:1.1}
.date-pill b{display:block;font-size:17px}.date-pill small{font-size:11px;color:var(--muted)}

/* bar chart (css) */
.bars{display:flex;align-items:flex-end;gap:10px;height:180px;padding-top:10px}
.bars .bar{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
.bars .bar span{width:100%;max-width:38px;background:var(--brand);border-radius:6px 6px 2px 2px;min-height:3px}
.bars .bar:last-child span{background:var(--accent)}
.bars .bar small{font-size:11px;color:var(--muted)}

/* profile header */
.profile{display:flex;gap:18px;align-items:center}
.profile img,.profile .ph{width:76px;height:76px;border-radius:12px;object-fit:cover;background:var(--line-2);display:grid;place-items:center;font-size:26px;font-weight:800;color:var(--brand)}
.kv{display:grid;grid-template-columns:150px 1fr;gap:8px 16px;font-size:14px}
.kv dt{color:var(--muted)} .kv dd{margin:0;font-weight:500}

.bottom-nav{display:none}
.only-mobile{display:none!important}
.scrim{display:none}

/* ---------- Print ---------- */
@media print{
  .sidebar,.topbar,.bottom-nav,.no-print,.alert,.fab,.install-bar,.push-bar,.gsearch,.sheet,.scrim,.splash,#busalarm{display:none!important}
  .btn,form.card.toolbar,.chips,.actions{display:none!important}
  @page{margin:10mm}
  .main{margin:0}.content{padding:0}
  body{background:#fff}.card{border:0;padding:0}
}

/* ---------- Tablet ---------- */
@media screen and (max-width:1100px){
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- Mobile: app-like shell ---------- */
@media screen and (max-width:820px){
  body{font-size:15px;background:#EEF1F6}
  .only-mobile{display:grid!important}.only-desktop{display:none!important}
  .sidebar{transform:translateX(-100%);transition:transform .22s ease;width:84%;max-width:320px;box-shadow:0 0 40px rgba(0,0,0,.3)}
  body.nav-open .sidebar{transform:none}
  body.nav-open .scrim{display:block;position:fixed;inset:0;background:rgba(10,18,33,.45);z-index:35}
  .main{margin-left:0}
  .topbar{height:58px;padding:0 14px;padding-top:env(safe-area-inset-top);background:var(--ink);border:0;color:#fff}
  .topbar .icon-btn{background:transparent;border-color:rgba(255,255,255,.18);color:#fff}
  .user-chip{border:0;padding:0}
  .user-chip .avatar{display:none!important}
  .page-title{font-size:1.05rem;color:#fff}
  .content{padding:16px 14px calc(92px + env(safe-area-inset-bottom))}
  .card{padding:16px;border-radius:14px;border:0;box-shadow:0 1px 2px rgba(22,35,59,.06)}
  .grid,.g-2,.g-3,.g-4{grid-template-columns:1fr;gap:12px}
  .g-4.keep-2,.g-2.keep-2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .span-2{grid-column:auto}
  .stat{border:0;border-radius:14px;padding:14px;flex-direction:column;gap:10px;box-shadow:0 1px 2px rgba(22,35,59,.06)}
  .stat .v{font-size:1.3rem}
  .form-grid{grid-template-columns:1fr}
  .input,.field input:not([type=checkbox]):not([type=radio]),.field select{height:46px;font-size:16px}
  .btn{height:44px}
  .form-actions{position:sticky;bottom:calc(70px + env(safe-area-inset-bottom));background:#fff;margin:18px -16px -16px;padding:12px 16px;border-radius:0 0 14px 14px}
  .form-actions .btn{flex:1}
  .toolbar .input,.toolbar .btn{flex:1 1 100%;min-width:0}
  .kv{grid-template-columns:1fr;gap:2px}.kv dd{margin-bottom:8px}

  /* tables become cards */
  .table-wrap.cards{border:0;background:transparent;overflow:visible}
  .table-wrap.cards table,.table-wrap.cards tbody,.table-wrap.cards tr,.table-wrap.cards td{display:block;width:100%}
  .table-wrap.cards thead{display:none}
  .table-wrap.cards tr{background:#fff;border-radius:14px;padding:12px 14px;margin-bottom:10px;box-shadow:0 1px 2px rgba(22,35,59,.06)}
  .table-wrap.cards td{border:0;padding:4px 0;display:flex;justify-content:space-between;gap:12px;text-align:right}
  .table-wrap.cards td::before{content:attr(data-label);color:var(--muted);font-size:13px;text-align:left;font-weight:500}
  .table-wrap.cards td.primary{font-size:16px;font-weight:700;text-align:left;justify-content:flex-start;padding-bottom:6px}
  .table-wrap.cards td.primary::before{display:none}
  .table-wrap.cards td.actions{justify-content:flex-end;padding-top:10px;margin-top:6px;border-top:1px solid var(--line-2)}
  .table-wrap.cards td.actions::before{display:none}
  .table-wrap.cards tfoot{display:block}

  .bottom-nav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;background:#fff;border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom));justify-content:space-around}
  .bottom-nav a,.bottom-nav button{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;font-weight:600;color:var(--muted);background:none;border:0;font-family:inherit;padding:4px 0;text-decoration:none!important}
  .bottom-nav i{font-size:21px}
  .bottom-nav a.active{color:var(--brand)}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}