:root{
  --green:#075B3A; --green-deep:#054228; --green-tint:#E7F3EC;
  --red:#E50914; --red-deep:#B4070F; --red-tint:#FDECEC;
  --amber:#B7791F; --amber-tint:#FDF3DC; --slate:#5B6472; --slate-tint:#EEF0F4;
  --ink:#111; --ink-soft:#3B3C40; --muted:#6B6F78;
  --paper:#fff; --mist:#F4F6F5; --line:#E3E6E4;
  --ff-head:'Space Grotesk','Inter',sans-serif; --ff-body:'Inter',system-ui,sans-serif;
  --r-sm:8px; --r-md:12px; --r-lg:18px; --side:248px;
  /* theme tokens (light) */
  color-scheme:light;
  --green-text:#075B3A; --green-hover:#054228;
  --field-bg:#fff; --input-line:#CDD3CF; --th-bg:#FAFBFA; --row-hover:#FAFCFB;
  --track:#E6EAE8; --btn-hover:#F4F6F5; --danger-line:#F4C6C8; --absent-bg:#FFF9F9;
  --grp-bg:#F4F7F5; --no:#B8BDC4; --chart-grid:#E8ECE9; --chart-grid-base:#D5DAD7; --donut-track:#EEF1EF;
  --chip-bg:#E3E6E4; --chip-fg:#3B3C40;
  --teacher-bg:#E6EEFB; --teacher-fg:#1F4E9C; --recep-bg:#F0E8FA; --recep-fg:#6B3FA0;
  --overlay:rgba(10,24,17,.5); --toast-bg:#111; --savebar-shadow:rgba(0,0,0,.05);
  --chart-green:#075B3A; --chart-red:#E50914; --chart-amber:#B7791F; --chart-slate:#5B6472;
  --chart-blue:#2E7D9A; --chart-purple:#7A5AC8;
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --green:#1E8C5E; --green-deep:#0C241A; --green-tint:#153828;
  --red:#EF4B53; --red-deep:#FF8A90; --red-tint:#3B1B1F;
  --amber:#E7AE45; --amber-tint:#3A2F15; --slate:#A3ADBB; --slate-tint:#262D36;
  --ink:#E9EEEB; --ink-soft:#C5CCC8; --muted:#8F9A94;
  --paper:#18221E; --mist:#0F1613; --line:#2A3730;
  --green-text:#5FD3A1; --green-hover:#27A06D;
  --field-bg:#111A16; --input-line:#3A4943; --th-bg:#1D2924; --row-hover:#1D2924;
  --track:#2A3730; --btn-hover:#22302A; --danger-line:#6B2E33; --absent-bg:#241A1C;
  --grp-bg:#1D2924; --no:#5A6660; --chart-grid:#25322C; --chart-grid-base:#38463F; --donut-track:#25322C;
  --chip-bg:#2A3730; --chip-fg:#C5CCC8;
  --teacher-bg:#18283F; --teacher-fg:#8FB5F5; --recep-bg:#2A1F3D; --recep-fg:#BF9BF0;
  --overlay:rgba(0,0,0,.65); --toast-bg:#2A3730; --savebar-shadow:rgba(0,0,0,.4);
  --chart-green:#34C48A; --chart-red:#F0545B; --chart-amber:#E7AE45; --chart-slate:#8F9BAA;
  --chart-blue:#4FB0D3; --chart-purple:#A08BE8;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{transition:background-color .2s,color .2s;font-family:var(--ff-body);font-size:14px;line-height:1.5;color:var(--ink);background:var(--mist);-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--ff-head);letter-spacing:-.01em}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--green-text)}
:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.hide{display:none!important}
.muted{color:var(--muted)} .num{font-variant-numeric:tabular-nums}
.right{text-align:right}

/* ---------- Login ---------- */
#root{min-height:100vh}
.login{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr}
.login-art{background:linear-gradient(160deg,var(--green-deep),#06351f);color:#fff;padding:56px;display:flex;flex-direction:column;justify-content:space-between;gap:32px;position:relative;overflow:hidden}
.login-art>*{position:relative;z-index:1}
.login-brand{display:flex;align-items:center;gap:14px;font:600 14px var(--ff-head);letter-spacing:.08em;text-transform:uppercase;color:#BFD9CB}
.login-brand img{width:56px;height:56px;border-radius:14px;background:#fff;padding:5px}
.login-art h1{font-size:46px;line-height:1.05;max-width:12ch}
.login-art p{color:#BFD9CB;max-width:34ch;margin-top:14px;font-size:16px}
.login-points{list-style:none;display:grid;gap:10px;color:#D8E8DF}
.login-points li{display:flex;gap:10px;align-items:center}
.login-points li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--red);flex:none}
.login-art::after{content:"";position:absolute;right:-110px;top:-110px;width:340px;height:340px;border-radius:50%;border:58px solid rgba(229,9,20,.92)}
.login-form{display:flex;align-items:center;justify-content:center;padding:32px;background:var(--paper)}
.login-form form{width:100%;max-width:380px;display:grid;gap:18px}
.login-form h2{font-size:30px}
.login-form .btn.primary{padding:12px 16px;font-size:15px}
.pw{position:relative}.pw input{padding-right:64px}
.pw button{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:none;border:0;color:var(--green-text);font-weight:600;cursor:pointer;padding:6px 10px}
@media(max-width:820px){.login{grid-template-columns:1fr}.login-art{padding:28px;min-height:0}.login-art h1{font-size:30px}.login-points{display:none}.login-art::after{width:200px;height:200px;border-width:36px;right:-70px;top:-70px}}

/* ---------- Shell ---------- */
.shell{display:grid;grid-template-columns:var(--side) 1fr;min-height:100%}
.side{background:var(--green-deep);color:#D8E8DF;padding:20px 14px;display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 18px;color:#fff;font-family:var(--ff-head);font-weight:700;line-height:1.1}
.brand img{width:38px;height:38px;border-radius:10px;background:#fff;padding:3px}
.brand small{display:block;font:500 11px var(--ff-body);color:#9CC2AE}
.nav a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--r-sm);color:#D8E8DF;text-decoration:none;font-weight:500}
.nav a:hover{background:rgba(255,255,255,.08)}
.nav a.active{background:#fff;color:var(--green-deep)}
.nav svg{width:18px;height:18px;flex:none}
.side-foot{margin-top:auto;padding:12px 8px;border-top:1px solid rgba(255,255,255,.14);font-size:13px}
.side-foot b{display:block;color:#fff}
.side-foot button{background:none;border:0;color:#9CC2AE;cursor:pointer;padding:4px 0;text-decoration:underline}
.main{min-width:0;display:flex;flex-direction:column}
.topbar{display:none;align-items:center;gap:12px;padding:12px 16px;background:var(--green-deep);color:#fff;position:sticky;top:0;z-index:20}
.topbar button{background:none;border:0;color:#fff;font-size:22px;cursor:pointer}
.page{padding:28px 32px 56px;max-width:1280px;width:100%}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.page-head h1{font-size:28px}
.page-head p{color:var(--muted)}
@media(max-width:900px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;inset:0 auto 0 0;width:var(--side);z-index:40;transform:translateX(-100%);transition:transform .2s}
  .side.open{transform:none}
  .topbar{display:flex}
  .page{padding:20px 16px 48px}
}

/* ---------- Components ---------- */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px}
.card h3{font-size:16px;margin-bottom:12px}
.grid{display:grid;gap:16px}
.g4{grid-template-columns:repeat(4,1fr)} .g2{grid-template-columns:1.6fr 1fr}
@media(max-width:1000px){.g4{grid-template-columns:repeat(2,1fr)}.g2{grid-template-columns:1fr}}
@media(max-width:480px){.g4{grid-template-columns:1fr}}
.stat{display:flex;flex-direction:column;gap:4px}
.stat span{color:var(--muted);font-size:13px}
.stat b{font:700 28px var(--ff-head)}
.stat.due b{color:var(--red)} .stat.ok b{color:var(--green-text)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 16px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--paper);cursor:pointer;font-weight:600;text-decoration:none;color:var(--ink)}
.btn:hover{background:var(--btn-hover)}
.btn.primary{background:var(--green);border-color:var(--green);color:#fff}
.btn.primary:hover{background:var(--green-hover);border-color:var(--green-hover)}
.btn.danger{color:var(--red-deep);border-color:var(--danger-line)}
.btn.danger:hover{background:var(--red-tint)}
.btn.sm{padding:5px 10px;font-size:13px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.link{border:0;background:none;color:var(--green-text);padding:4px 6px}

.field{display:grid;gap:6px}
.field label{font-weight:600;font-size:13px}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--input-line);border-radius:var(--r-sm);background:var(--field-bg)}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--green);border-color:var(--green)}
.field small{color:var(--muted)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
@media(max-width:560px){.form-grid{grid-template-columns:1fr}}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;align-items:center}
.toolbar input,.toolbar select{padding:9px 12px;border:1px solid var(--input-line);border-radius:var(--r-sm);background:var(--field-bg);min-width:150px}
.toolbar .grow{flex:1;min-width:200px}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper)}
table{width:100%;border-collapse:collapse}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:12.5px;color:var(--muted);font-weight:600;background:var(--th-bg);white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--row-hover)}
td .sub{display:block;color:var(--muted);font-size:12.5px}
.actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.empty{padding:48px 16px;text-align:center;color:var(--muted)}
.empty b{display:block;color:var(--ink);font:600 16px var(--ff-head);margin-bottom:4px}

.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:600;background:var(--slate-tint);color:var(--slate)}
.badge.green{background:var(--green-tint);color:var(--green-text)} .badge.red{background:var(--red-tint);color:var(--red-deep)} .badge.amber{background:var(--amber-tint);color:var(--amber)}
.meter{height:6px;border-radius:99px;background:var(--track);overflow:hidden;min-width:90px;margin-top:6px}
.meter i{display:block;height:100%;background:var(--green)}
.meter.low i{background:var(--red)} .meter.mid i{background:var(--amber)}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px}
.tabs button{background:none;border:0;padding:10px 16px;cursor:pointer;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button.active{color:var(--green-text);border-color:var(--green)}
.pager{display:flex;justify-content:space-between;align-items:center;margin-top:14px;color:var(--muted)}

/* ---------- Attendance register ---------- */
.reg-bar{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin:4px 0 16px}
.tally{display:flex;height:10px;flex:1;min-width:200px;border-radius:99px;overflow:hidden;background:var(--track)}
.tally i{display:block;transition:width .2s}
.tally .p{background:var(--green)}.tally .a{background:var(--red)}.tally .l{background:var(--amber)}.tally .v{background:var(--slate)}
.legend{display:flex;gap:14px;font-size:13px;color:var(--ink-soft)}
.legend b{font-variant-numeric:tabular-nums}
.roll{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:10px}
.mark{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;background:var(--paper);border:1px solid var(--line);border-left:5px solid var(--input-line);border-radius:var(--r-md)}
.mark[data-s=present]{border-left-color:var(--green)}.mark[data-s=absent]{border-left-color:var(--red);background:var(--absent-bg)}
.mark[data-s=late]{border-left-color:var(--amber)}.mark[data-s=leave]{border-left-color:var(--slate)}
.mark b{display:block;font-weight:600}.mark small{color:var(--muted)}
.seg{display:flex;gap:4px;flex:none}
.seg button{width:34px;height:34px;border-radius:8px;border:1px solid var(--line);background:var(--paper);font-weight:700;cursor:pointer;color:var(--muted)}
.seg button:hover{background:var(--btn-hover)}
.seg button[aria-pressed=true][data-v=present]{background:var(--green);border-color:var(--green);color:#fff}
.seg button[aria-pressed=true][data-v=absent]{background:var(--red);border-color:var(--red);color:#fff}
.seg button[aria-pressed=true][data-v=late]{background:var(--amber);border-color:var(--amber);color:#fff}
.seg button[aria-pressed=true][data-v=leave]{background:var(--slate);border-color:var(--slate);color:#fff}
.savebar{position:sticky;bottom:0;margin-top:16px;padding:12px 16px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);display:flex;justify-content:space-between;align-items:center;gap:12px;box-shadow:0 -6px 20px var(--savebar-shadow)}

/* ---------- Bars ---------- */
.bars{display:flex;align-items:flex-end;gap:14px;height:170px;padding-top:8px}
.bars div{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:6px;font-size:12px;color:var(--muted)}
.bars i{display:block;width:100%;max-width:56px;background:var(--green);border-radius:6px 6px 0 0;min-height:3px}
.bars div:last-child i{background:var(--red)}
.list{display:grid;gap:0}
.list>div{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.list>div:last-child{border-bottom:0}

/* ---------- Modal & toast ---------- */
.overlay{position:fixed;inset:0;background:var(--overlay);display:flex;align-items:flex-start;justify-content:center;padding:5vh 16px;z-index:60;overflow-y:auto}
.modal{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);width:100%;max-width:640px;box-shadow:0 24px 70px rgba(0,0,0,.3)}
.modal.wide{max-width:860px}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line)}
.modal-head h2{font-size:20px}
.modal-head button{background:none;border:0;font-size:26px;line-height:1;cursor:pointer;color:var(--muted)}
.modal-body{padding:22px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}
#toasts{position:fixed;right:16px;bottom:16px;display:grid;gap:8px;z-index:90}
.toast{background:var(--toast-bg);color:#fff;padding:12px 16px;border-radius:var(--r-sm);box-shadow:0 8px 24px rgba(0,0,0,.25);max-width:340px}
.toast.err{background:var(--red-deep)} .toast.ok{background:var(--green-deep)}
.err-text{color:var(--red-deep);font-size:13px;min-height:18px}

/* ---------- Receipt ---------- */
.receipt{border:2px solid var(--green);border-radius:var(--r-md);padding:24px;background:var(--paper)}
.receipt header{display:flex;justify-content:space-between;gap:16px;border-bottom:2px solid var(--green);padding-bottom:14px;margin-bottom:14px}
.receipt h3{font-size:20px;color:var(--green-text)}
.receipt dl{display:grid;grid-template-columns:150px 1fr;gap:6px 12px}
.receipt dt{color:var(--muted)}
.receipt .amount{font:700 30px var(--ff-head);color:var(--green-text);margin:14px 0}
.receipt footer{display:flex;justify-content:space-between;margin-top:30px;color:var(--muted);font-size:12.5px}
@media print{
  body{background:#fff;color:#111}
  .overlay{position:static;background:none;padding:0}
  .modal{box-shadow:none;max-width:none}
  .modal-head,.modal-foot,#toasts{display:none}
  #root{display:none!important}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

/* ---------- Roles (RBAC) ---------- */
.role-chip{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700;background:var(--chip-bg);color:var(--chip-fg)}
.r-admin{background:var(--red-tint);color:var(--red-deep)} .r-manager{background:var(--green-tint);color:var(--green-text)}
.r-accountant{background:var(--amber-tint);color:var(--amber)} .r-teacher{background:var(--teacher-bg);color:var(--teacher-fg)} .r-receptionist{background:var(--recep-bg);color:var(--recep-fg)}
.side-foot .role-chip{margin:4px 0 6px;background:rgba(255,255,255,.14);color:#fff}
.role-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.matrix th.c,.matrix td.c{text-align:center}
.matrix tr.grp td{background:var(--grp-bg);font:700 12px var(--ff-head);text-transform:uppercase;letter-spacing:.06em;color:var(--green-text);padding:8px 16px}
.matrix td:first-child{text-transform:capitalize}
.matrix .yes{color:var(--green-text);font-weight:700}.matrix .no{color:var(--no)}
.seg button:disabled{cursor:not-allowed;opacity:.6}

/* ---------- Dashboard charts ---------- */
.g2e{grid-template-columns:1fr 1fr}
.charts-row{margin-top:16px}
@media(max-width:1000px){.g2e{grid-template-columns:1fr}}
.chart-card{display:flex;flex-direction:column;overflow:hidden}
.chart-head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px 16px;flex-wrap:wrap;margin-bottom:6px}
.chart-head h3{margin-bottom:0}
.chart-sub{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:12.5px}
.chart-sub b{color:var(--ink);font-weight:600}
.chart-svg{display:block;width:100%;height:auto}
.chart-svg.area{margin-top:8px}
.c-grid{stroke:var(--chart-grid);stroke-width:1;stroke-dasharray:3 4}
.c-grid.base{stroke:var(--chart-grid-base);stroke-dasharray:none}
.c-axis{fill:var(--muted);font:500 11px var(--ff-body)}
.c-val{fill:var(--ink-soft);font:600 11px var(--ff-body)}
.c-line{fill:none;stroke:var(--green);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;animation:c-draw 1.1s ease-out .1s forwards}
.c-area{opacity:0;animation:c-fade .9s ease-out .5s forwards}
.pt .dot{fill:var(--paper);stroke:var(--green);stroke-width:3;transition:r .15s}
.pt.last .dot{fill:var(--red);stroke:var(--paper);stroke-width:2.5;r:6}
.pt:hover .dot{r:8}
.donut-wrap{display:flex;align-items:center;gap:22px;flex-wrap:wrap;justify-content:center;padding:6px 0 2px;flex:1}
.donut{width:190px;max-width:100%;flex:none;animation:c-spin .8s cubic-bezier(.2,.8,.2,1)}
.d-big{fill:var(--ink);font:700 30px var(--ff-head)}
.d-small{fill:var(--muted);font:500 12px var(--ff-body)}
.seg{transition:opacity .15s}
.donut:hover .seg{opacity:.55}.donut .seg:hover{opacity:1}
.legend{list-style:none;display:grid;gap:10px;flex:1;min-width:190px}
.legend li{display:grid;grid-template-columns:12px 1fr auto 40px;align-items:center;gap:10px;font-size:13.5px}
.legend i{width:12px;height:12px;border-radius:4px}
.legend span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.legend b{font-weight:600}
.legend em{font-style:normal;color:var(--muted);text-align:right;font-size:12.5px}
@keyframes c-draw{to{stroke-dashoffset:0}}
@keyframes c-fade{to{opacity:1}}
@keyframes c-spin{from{opacity:0;transform:rotate(-30deg) scale(.88)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.c-line{animation:none;stroke-dashoffset:0}.c-area{animation:none;opacity:1}.donut{animation:none}}

.back-link{display:block;text-align:center;margin-top:6px;font-size:13.5px;color:var(--muted);text-decoration:none}
.back-link:hover{color:var(--green-text);text-decoration:underline}

/* ---------- Theme (light / dark) ---------- */
#gArea stop{stop-color:var(--chart-green)}
.d-track{stroke:var(--donut-track)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;border:1px solid transparent;background:none;color:inherit;border-radius:99px;transition:background-color .15s,border-color .15s}
.theme-toggle svg{width:18px;height:18px;flex:none}
.theme-toggle .i-moon{display:none}
:root[data-theme="dark"] .theme-toggle .i-sun{display:none}
:root[data-theme="dark"] .theme-toggle .i-moon{display:block}
/* sidebar row: full-width pill with label + switch */
.side .theme-toggle{width:100%;justify-content:flex-start;padding:9px 12px;border-radius:var(--r-sm);color:#D8E8DF;font-weight:500;margin-bottom:8px;border-color:rgba(255,255,255,.14)}
.side .theme-toggle:hover{background:rgba(255,255,255,.08)}
.theme-toggle .sw{margin-left:auto;width:34px;height:20px;border-radius:99px;background:rgba(255,255,255,.22);position:relative;flex:none;transition:background-color .2s}
.theme-toggle .sw::after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .2s}
:root[data-theme="dark"] .theme-toggle .sw{background:var(--green)}
:root[data-theme="dark"] .theme-toggle .sw::after{transform:translateX(14px)}
/* icon-only variants: mobile topbar + login */
.topbar .theme-toggle{margin-left:auto;width:38px;height:38px;color:#fff}
.topbar .theme-toggle:hover{background:rgba(255,255,255,.12)}
.login-theme{position:fixed;top:14px;right:14px;z-index:5;width:40px;height:40px;background:var(--paper);color:var(--ink);border-color:var(--line);box-shadow:0 2px 10px rgba(0,0,0,.12)}
.login-theme:hover{background:var(--btn-hover)}
.theme-toggle:focus-visible{outline:2px solid var(--green-text);outline-offset:2px}