:root{
  --green:#0b5a44;
  --yellow:#f8b810;
  --bg:#f6f9f7;
  --card:#fff;
  --text:#17372d;
  --muted:#6b7d75;
  --line:#dbe7e1;
  --red:#b83d3d;
  --soft:#f2f7f4;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text)}
.app{min-height:100vh;display:grid;grid-template-columns:210px minmax(0,1fr)}
aside{background:linear-gradient(180deg,var(--green),#084a38);color:#fff;padding:18px 14px}
.brand{display:flex;align-items:center;gap:12px;padding:5px 5px 16px;border-bottom:1px solid rgba(255,255,255,.18);margin-bottom:16px}
.brand-icon{width:48px;height:48px;border-radius:13px;background:var(--yellow);display:grid;place-items:center;color:var(--green);font-weight:900;font-size:24px}
.brand b{font-size:19px}
.brand small{display:block;color:rgba(255,255,255,.72);margin-top:3px}
.side-note{color:rgba(255,255,255,.8);font-size:13px;line-height:1.8;padding:6px 8px}
.side-nav{margin-top:14px;display:flex;flex-direction:column;gap:7px}
.side-link,.side-toggle{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 12px;
  border-radius:12px;
  color:#fff;
  text-decoration:none;
  border:0;
  background:transparent;
  font:inherit;
  font-weight:700;
  cursor:pointer;
  text-align:right;
  transition:background .18s ease,transform .18s ease;
}
.side-link:hover,.side-toggle:hover{background:rgba(255,255,255,.10)}
.side-link.active{background:rgba(248,184,16,.16);box-shadow:inset 0 0 0 1px rgba(248,184,16,.18)}
.nav-label{display:flex;align-items:center;gap:9px;min-width:0}
.nav-icon{
  width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.08);
  flex:0 0 auto;
}
.nav-icon svg{width:16px;height:16px;display:block}
.side-toggle .chevron{
  width:18px;height:18px;display:grid;place-items:center;
  transition:transform .2s ease;
  opacity:.85;
}
.side-toggle .chevron svg{width:16px;height:16px;display:block}
.side-toggle.open .chevron{transform:rotate(180deg)}
.grade-menu{
  display:none;
  padding:3px 0 7px;
  margin-right:14px;
  border-right:1px solid rgba(255,255,255,.14);
}
.grade-menu.open{display:flex;flex-direction:column;gap:3px}
.grade-link{
  display:flex;
  align-items:center;
  min-height:34px;
  color:rgba(255,255,255,.88);
  text-decoration:none;
  padding:8px 12px;
  margin-right:8px;
  border-radius:9px;
  font-size:12px;
  transition:background .16s ease,color .16s ease;
}
.grade-link:hover{background:rgba(255,255,255,.08);color:#fff}
.grade-link.active{
  background:var(--yellow);
  color:var(--green);
  font-weight:900;
  box-shadow:0 4px 14px rgba(248,184,16,.18);
}
.mobile-menu-btn{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--green);
  border-radius:12px;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  flex:0 0 auto;
}
.mobile-menu-btn svg{width:22px;height:22px}
.mobile-drawer-overlay{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.38);
  z-index:89;
}
.mobile-drawer-overlay.show{display:block}
.mobile-close{
  display:none;
  width:36px;height:36px;
  border:0;
  border-radius:10px;
  background:rgba(255,255,255,.10);
  color:#fff;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.mobile-close svg{width:18px;height:18px}

main{padding:24px;min-width:0}
.topbar{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:18px}
h1{margin:0;font-size:28px}
.subtitle{color:var(--muted);margin-top:7px}
.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.field{min-width:220px}
.field label{display:block;font-size:13px;color:#53675d;margin:0 0 6px;font-weight:700}
select,input{font:inherit}
.control-select,.control-input{width:100%;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text)}
.btn{border:1px solid var(--line);background:#fff;color:var(--text);padding:10px 14px;border-radius:11px;cursor:pointer;font-weight:700}
.btn:hover{filter:brightness(.985)}
.btn:disabled{opacity:.6;cursor:not-allowed}
.btn-primary{background:var(--green);border-color:var(--green);color:#fff}
.btn-secondary{background:#fff}
.btn-sync{background:#eef7f3;border-color:#b8d8cc;color:var(--green)}
.day-status-box{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:10px;
}
.day-status-label{
  font-size:12px;color:rgba(255,255,255,.82);font-weight:700;
}
.day-status-select{
  min-width:190px;padding:8px 10px;border-radius:10px;
  border:1px solid rgba(255,255,255,.25);background:#fff;color:var(--text);
  font:inherit;font-size:12px;font-weight:700;
}
.day-status-note{
  min-width:190px;padding:8px 10px;border-radius:10px;
  border:1px solid rgba(255,255,255,.25);background:#fff;color:var(--text);
  font:inherit;font-size:12px;
}
.day-status-readonly{
  display:inline-flex;align-items:center;padding:6px 9px;border-radius:999px;
  background:rgba(255,255,255,.12);font-size:12px;font-weight:800;
}
.day-banner{
  background:var(--green);
  color:#fff;
  border-radius:16px;
  padding:15px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-bottom:16px;
}
.day-banner b,.day-title-link{font-size:20px}
.day-title-link{color:#fff;font-weight:800;text-decoration:none}
.day-title-link:hover{text-decoration:underline;text-underline-offset:4px}
.day-banner small{display:block;color:rgba(255,255,255,.78);margin-top:4px}
.summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px}
.stat{background:#fff;border:1px solid var(--line);border-radius:15px;padding:15px}
.stat small{color:var(--muted);display:block;margin-bottom:8px}
.stat b{font-size:27px}
.stat.status-complete-card{border-top:4px solid #73bf8c}
.stat.status-partial-card{border-top:4px solid #e1ad50}
.stat.status-absent-card{border-top:4px solid #d97979}
.stat.status-cancelled-card{border-top:4px solid #8f9fd4}
.stat.status-pending-card{border-top:4px solid #aeb7b2}
.card{background:#fff;border:1px solid var(--line);border-radius:17px;overflow:hidden}
.card-head{padding:15px 17px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px}
.card-head b{font-size:18px}
.card-head span{color:var(--muted);font-size:13px}
.table-wrap{
  overflow:auto;
  max-width:100%;
  position:relative;
  scrollbar-gutter:stable;
  cursor:grab;
  -webkit-overflow-scrolling:touch;
  touch-action:pan-x pan-y;
}
.table-wrap.dragging{cursor:grabbing;user-select:none}
.table-wrap::-webkit-scrollbar{height:14px;width:12px}
.table-wrap::-webkit-scrollbar-track{background:#edf2ef;border-radius:999px}
.table-wrap::-webkit-scrollbar-thumb{background:#9cafA5;border:3px solid #edf2ef;border-radius:999px}
.table-wrap::-webkit-scrollbar-thumb:hover{background:#789187}

table{width:100%;border-collapse:separate;border-spacing:0;min-width:980px}
th,td{padding:11px 10px;border-bottom:1px solid #edf2ee;border-left:1px solid #f0f4f2;text-align:center;font-size:14px;background:#fff}
th{background:var(--soft);color:#52665c;position:sticky;top:0;z-index:4}
th:first-child,td:first-child{
  position:sticky;
  right:0;
  z-index:3;
  min-width:180px;
  max-width:210px;
  text-align:right;
  box-shadow:-8px 0 12px rgba(15,63,48,.05);
}
th:first-child{z-index:6;background:#eaf2ee}
tr:hover td{background:#fbfdfc}
tr:hover td:first-child{background:#f5faf7}
.student-name{font-weight:800}
.student-name.manager-link{border:0;background:transparent;padding:0;color:var(--green);cursor:pointer;font:inherit;font-weight:800;text-decoration:underline;text-decoration-style:dotted;text-underline-offset:3px}
.student-meta{display:flex;gap:5px;align-items:center;flex-wrap:wrap;margin-top:6px}
.manual-tag,.type-tag,.track{display:inline-flex;padding:4px 7px;border-radius:999px;font-weight:700;font-size:10px}
.manual-tag{background:#fff6d9;color:#8a6300}
.track{font-size:11px;color:#fff;background:var(--green)}
.track.lang{background:var(--yellow);color:var(--green)}
.type-tag.subscribed{background:#e8f6ed;color:#247148;border:1px solid #c8e6d3}
.type-tag.trial{background:#fff3d5;color:#8a6300;border:1px solid #f0d58d}
.type-tag.manual{background:#f1f3f2;color:#65736c;border:1px solid #dce2df}
.att-select{width:102px;padding:8px 6px;border-radius:9px;border:1px solid var(--line);background:#fff;color:var(--text)}
.att-select.present{background:#eaf8ef;color:#267447;border-color:#c8e6d3}
.att-select.absent{background:#fff0f0;color:#a83f3f;border-color:#efcccc}
.att-select.teacher{background:#fff5df;color:#936418;border-color:#edd9a9}
.att-select.na{background:#f1f3f2;color:#6f7974;border-color:#d9dfdc}
.att-select.excused{background:#eef2ff;color:#5267a8;border-color:#ccd5f0}
.session-note{width:102px;min-width:102px;margin-top:6px;padding:6px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:11px}
.session-note:disabled{background:#f4f6f5;color:#99a29d}
.empty{padding:28px;text-align:center;color:var(--muted)}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.42);display:grid;place-items:center;padding:15px;z-index:20}
.modal.hidden{display:none}
.modal-box{width:min(430px,100%);background:#fff;border-radius:18px;padding:20px;box-shadow:0 25px 70px rgba(0,0,0,.2)}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.modal-head h3{margin:0}
.close{border:0;background:#f3f5f4;width:35px;height:35px;border-radius:9px;cursor:pointer}
.modal-box label{display:block;font-size:13px;color:#53675d;margin:12px 0 6px;font-weight:700}
.modal-box input,.modal-box select{width:100%;padding:11px;border:1px solid var(--line);border-radius:10px}
.notice{margin-top:14px;padding:10px 12px;border-radius:11px;background:#eef7f3;color:var(--green);font-size:13px;line-height:1.6}
.print-only{display:none}
.session-head{min-width:110px}
.session-head-title{display:block;font-weight:700;margin-bottom:5px}
.cancel-all{border:0;background:#fff1df;color:#8a5b13;padding:4px 7px;border-radius:7px;font-size:10px;cursor:pointer;white-space:nowrap}
.cancel-all:hover{background:#ffe6c2}
.cancel-menu{position:fixed;z-index:50;min-width:170px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 35px rgba(0,0,0,.16);padding:6px}
.cancel-menu.hidden{display:none}
.cancel-menu button{display:block;width:100%;border:0;background:#fff;color:var(--text);text-align:right;padding:9px 10px;border-radius:8px;cursor:pointer;font-size:12px;font-weight:700}
.cancel-menu button:hover{background:#f3f7f5}
.summary-breakdown{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.summary-pill{padding:5px 9px;border-radius:999px;font-size:12px;font-weight:800}
.summary-pill.ar{background:#e7f3ee;color:#0b5a44;border:1px solid #b8d8cc}
.summary-pill.lang{background:#fff4cc;color:#7a5900;border:1px solid #f8d96b}
.count-cell{font-weight:800;white-space:nowrap}
.status-badge{display:inline-flex;align-items:center;justify-content:center;min-width:84px;padding:6px 9px;border-radius:999px;font-size:11px;font-weight:800;white-space:nowrap}
.status-complete{background:#eaf8ef;color:#267447}
.status-partial{background:#fff4df;color:#936418}
.status-pending{background:#f1f3f2;color:#6f7974}
.status-cancelled{background:#eef2ff;color:#5267a8}
.status-absent{background:#fff0f0;color:#a83f3f}
.status-none{background:#f4f4f4;color:#777}
.status-holiday{background:#eef3f1;color:#52665c;border:1px solid #d6dfda}
.student-actions{display:flex;gap:4px;margin-top:5px;flex-wrap:wrap}
.student-action{border:0;background:#f1f4f2;color:#53675d;padding:3px 6px;border-radius:6px;font-size:9px;cursor:pointer}
.student-action.delete{background:#fff0f0;color:#a83f3f}
.autosave-note{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.82);font-size:12px}
.autosave-dot{width:8px;height:8px;border-radius:999px;background:#8ce0b0;box-shadow:0 0 0 3px rgba(140,224,176,.13)}
.sync-info{font-size:12px;color:rgba(255,255,255,.78);margin-top:5px}
.toast{position:fixed;left:18px;bottom:18px;z-index:80;background:#17372d;color:#fff;border-radius:12px;padding:11px 14px;box-shadow:0 12px 32px rgba(0,0,0,.18);font-size:13px;max-width:min(420px,calc(100vw - 36px));display:none}
.toast.show{display:block}

@media(max-width:900px){
  .app{display:block}
  aside{
    display:block;
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(290px,86vw);
    z-index:90;
    transform:translateX(105%);
    transition:transform .22s ease;
    overflow-y:auto;
    box-shadow:-18px 0 45px rgba(0,0,0,.22);
  }
  aside.mobile-open{transform:translateX(0)}
  .mobile-menu-btn{display:inline-flex}
  .mobile-close{display:inline-flex}
  main{padding:14px}
  .topbar{flex-direction:column}
  .controls{width:100%;display:grid;grid-template-columns:1fr 1fr}
  .controls .btn-primary{grid-column:1/-1}
  .summary{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:620px){
  .controls{grid-template-columns:1fr}
  .controls .btn-primary{grid-column:auto}
  .summary{grid-template-columns:1fr 1fr}
  .day-banner{align-items:flex-start;flex-direction:column}
  h1{font-size:22px}
  .subtitle{font-size:13px}
  .day-banner b,.day-title-link{font-size:16px}
  .day-banner small{font-size:12px}
  .card-head{padding:12px 14px}
  .card-head b{font-size:16px}
  .card-head .screen-only{display:none}
  table{min-width:520px}
  th,td{padding:8px 6px;font-size:13px}
  th:first-child,td:first-child{min-width:140px;max-width:140px}
  .student-name{font-size:13px;line-height:1.45;word-break:break-word}
  .student-meta{margin-top:4px}
  .track,.type-tag{padding:3px 6px;font-size:9px}
  .att-select{width:82px;min-width:82px;font-size:12px;padding:7px 4px}
  .session-note{width:82px;min-width:82px;font-size:10px}
  .session-head{min-width:82px}
  .cancel-all{font-size:9px;padding:3px 4px}
  .student-action{font-size:8px;padding:3px 5px}
}
@media print{
  aside,.controls,.summary,.card-head .screen-only,.btn,.modal,.toast{display:none!important}
  .app{display:block}
  main{padding:0}
  body{background:#fff}
  .day-banner{background:#fff!important;color:#000!important;border:1px solid #ccc}
  .day-banner small,.sync-info{color:#555!important}
  .card{border:0}
  .table-wrap{overflow:visible}
  table{min-width:0;width:100%;font-size:10px}
  th,td{font-size:10px;padding:5px 4px;position:static!important;box-shadow:none!important}
}

.login-screen{
  position:fixed;inset:0;z-index:200;
  background:linear-gradient(135deg,#f5f8f5,#eef5f0);
  display:grid;place-items:center;padding:18px;
}
.login-screen.hidden{display:none}
.login-card{
  width:min(430px,100%);background:#fff;border:1px solid var(--line);
  border-radius:20px;padding:24px;box-shadow:0 20px 60px rgba(17,55,39,.12)
}
.login-card h2{margin:0 0 6px;color:var(--green);font-size:25px}
.login-card p{margin:0 0 18px;color:var(--muted);line-height:1.7}
.login-card label{display:block;margin:12px 0 6px;font-weight:800;color:#52665c;font-size:13px}
.login-card input{width:100%;padding:12px;border:1px solid var(--line);border-radius:11px}
.login-card .btn{width:100%;margin-top:16px}
.login-error{margin-top:12px;color:#a83f3f;background:#fff0f0;border:1px solid #efcccc;padding:10px 12px;border-radius:10px;font-size:13px;display:none}
.login-error.show{display:block}
.app-shell.hidden{display:none!important}
.user-box{margin-top:16px;padding:12px;border-top:1px solid rgba(255,255,255,.14);color:#fff}
.user-box b{display:block;font-size:13px}
.user-box small{display:block;color:rgba(255,255,255,.7);margin-top:4px}
.user-box button{margin-top:9px;width:100%;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;padding:8px;border-radius:9px;cursor:pointer}
.live-badge{display:inline-flex;align-items:center;gap:6px;margin-top:6px;padding:5px 9px;border-radius:999px;background:#eaf8ef;color:#267447;border:1px solid #c8e6d3;font-size:11px;font-weight:800}
.live-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:#36a665}