:root{
 --bg:#f6f7fb;--panel:#fff;--text:#202735;--muted:#7a8495;--line:#e7e9ef;
 --brand:#4d5ff5;--brand-dark:#3d4edf;--brand-soft:#eef0ff;--danger:#e05260;--warn:#ad7414;--ok:#1f8b5b;
 --sidebar:#fbfcfe;--shadow:0 8px 28px rgba(31,41,55,.055);--radius:15px
}
*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;font-family:var(--app-font,Tahoma,Arial,sans-serif);background:var(--bg);color:var(--text);font-size:14px}a{color:var(--brand);text-decoration:none}svg{display:block}
.app-shell{display:flex;flex-direction:row;min-height:100vh;direction:ltr}.sidebar{width:236px;flex:0 0 236px;direction:ltr}.main{flex:1 1 auto;min-width:0;direction:ltr}html[dir="rtl"] .app-shell,body.dir-rtl .app-shell{flex-direction:row-reverse}html[dir="rtl"] .sidebar,body.dir-rtl .sidebar{direction:rtl}html[dir="rtl"] .main,body.dir-rtl .main{direction:rtl}
.sidebar{background:var(--sidebar);border-inline-end:1px solid var(--line);height:100vh;position:sticky;top:0;overflow:auto;padding:12px 14px;display:flex;flex-direction:column}.brand-wrap{padding:0 2px 14px}.brand-link{display:flex;align-items:center;gap:10px;color:var(--text);min-height:55px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:linear-gradient(145deg,#5367ff,#6e78ff);color:#fff;font-weight:800;font-size:20px;box-shadow:0 8px 18px rgba(77,95,245,.2)}.school-logo{width:45px;height:45px;object-fit:contain;border-radius:10px;background:#fff;padding:3px}.brand-copy{display:flex;flex-direction:column;min-width:0}.brand-copy b{font-size:14px}.brand-copy small{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}
.nav{display:flex;flex-direction:column;gap:2px;flex:1}.nav-section{font-size:10px;text-transform:uppercase;letter-spacing:.07em;color:#a0a7b4;font-weight:700;padding:18px 12px 7px}.nav a{display:flex;align-items:center;gap:11px;color:#50596b;padding:10px 12px;border-radius:11px;font-weight:600;transition:.15s}.nav a:hover{background:#f1f3f8;color:#323a4a}.nav a.active{background:var(--brand-soft);color:var(--brand)}.nav-ico{width:19px;height:19px;display:inline-flex;flex:none}.nav-ico svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.sidebar-foot{border-top:1px solid var(--line);padding:12px 10px 4px;display:flex;flex-direction:column;gap:5px;font-size:11px;color:var(--muted)}.sidebar-foot a{font-weight:700}.version-chip{font-size:9px;letter-spacing:.03em;color:#9aa3b2;direction:ltr;text-align:start}html[dir="rtl"] .sidebar,body.dir-rtl .sidebar{border-inline-end:1px solid var(--line)}
.main{min-width:0}.topbar{height:65px;background:rgba(246,247,251,.93);backdrop-filter:blur(10px);padding:9px 22px;display:flex;align-items:center;gap:16px;justify-content:space-between;position:sticky;top:0;z-index:10;border-bottom:1px solid rgba(231,233,239,.8)}.top-search{flex:1;max-width:330px}.top-search form{position:relative}.top-search input{height:43px;padding-inline-start:40px;background:#fff;box-shadow:0 2px 8px rgba(31,41,55,.03)}.search-symbol{position:absolute;inset-inline-start:14px;top:8px;font-size:23px;color:#687385;z-index:1}.top-actions{display:flex;align-items:center;gap:10px;margin-inline-start:auto}.compact-form{margin:0}.compact-form select{width:auto;min-width:112px;height:43px;background:#fff;padding-inline:11px;border-radius:11px}.school-switch select{min-width:225px}.user-chip{display:flex;align-items:center;gap:8px;padding-inline-start:5px}.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#e95f83;color:white;font-weight:700;font-size:12px}.user-meta{display:flex;flex-direction:column;line-height:1.25;max-width:150px}.user-meta b{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-meta small{font-size:10px;color:var(--muted)}
.content{padding:22px 24px 45px;max-width:1560px;margin:auto}.page-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:14px}.page-heading h1{font-size:24px;margin:0;font-weight:750;letter-spacing:-.02em}.page-heading p{margin:4px 0 0;color:var(--muted);font-size:12px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:19px;margin-bottom:18px;box-shadow:var(--shadow)}.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}.stat{background:#fff;border:1px solid var(--line);padding:17px;border-radius:14px;box-shadow:0 3px 14px rgba(31,41,55,.035)}.stat .n{font-size:27px;font-weight:780;margin-top:7px;letter-spacing:-.03em}.muted{color:var(--muted)}h1{font-size:24px}h2{font-size:17px;margin:0 0 14px;font-weight:750}h3{font-weight:700}.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px}.toolbar form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.btn,button{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:10px;padding:9px 14px;min-height:38px;cursor:pointer;font-family:inherit;font-size:13px;font-weight:650;background:var(--brand);color:#fff;box-shadow:none}.btn:hover,button:hover{background:var(--brand-dark);color:#fff}.btn.secondary{background:#fff;color:#4d5667;border:1px solid #dfe3ea}.btn.secondary:hover{background:#f7f8fa;color:#333}.btn.danger{background:#fff0f1;color:#c33c4a;border:1px solid #ffdadd}.btn.small{padding:6px 9px;min-height:30px;font-size:11px}.add-new{height:43px;padding-inline:15px;font-size:13px}.add-new span{font-size:18px;line-height:1}
input,select,textarea{width:100%;padding:9px 10px;border:1px solid #dfe3ea;border-radius:10px;background:#fff;color:var(--text);font:inherit;outline:none;transition:.15s}input:focus,select:focus,textarea:focus{border-color:#a9b0fb;box-shadow:0 0 0 3px rgba(77,95,245,.08)}textarea{min-height:90px;resize:vertical}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.form-grid .full{grid-column:1/-1}label{display:block;font-weight:680;margin-bottom:6px;font-size:12px;color:#40495a}.table-wrap{overflow:auto;border-radius:11px;border:1px solid #edf0f4}table{width:100%;border-collapse:separate;border-spacing:0;background:#fff}th,td{padding:11px 12px;border-bottom:1px solid #eff1f5;text-align:start;white-space:nowrap}th{background:#f8f9fb;font-size:11px;color:#6f7889;font-weight:700;position:sticky;top:0;z-index:1}tbody tr:hover td{background:#fbfcff}tr:last-child td{border-bottom:0}.badge{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;background:#f0f2f5;color:#667080;font-size:10px;font-weight:700}.badge.ok{background:#e9f8ef;color:var(--ok)}.badge.warn{background:#fff4d9;color:var(--warn)}.badge.danger{background:#fdecee;color:var(--danger)}
.flash{padding:11px 14px;border-radius:10px;margin-bottom:13px;background:#eef2ff;border:1px solid #e1e6ff}.flash.success{background:#ebf8f0;color:#14673f;border-color:#d5efdf}.flash.error{background:#fdecee;color:#a23440;border-color:#f7d8dc}.flash.warning{background:#fff6df;color:#7c570d;border-color:#f5e6b6}.split{display:grid;grid-template-columns:1fr 1fr;gap:18px}.search{max-width:360px}.logo-preview{max-width:100px;max-height:70px}.code{direction:ltr;text-align:left;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.notice{background:#f4f7ff;border:1px solid #dfe6ff;padding:13px;border-radius:11px;line-height:1.65}.danger-text{color:var(--danger)}.ok-text{color:var(--ok)}.role-chip{display:inline-flex;padding:4px 8px;border-radius:999px;background:#edf0ff;color:#4e5ed5;font-size:10px;margin-inline-end:6px}.readonly-note{background:#fff9e9;border:1px solid #f0e1ad;padding:11px 13px;border-radius:10px;margin-bottom:14px}.permission-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.permission-item{border:1px solid var(--line);border-radius:11px;padding:12px;background:#fbfcfe}.font-preview{font-size:19px;padding:14px;border:1px dashed #cbd1dc;border-radius:10px;background:#fafbfc;margin-top:8px}
.import-issues{margin-top:5px;white-space:normal;max-width:520px;font-size:11px;color:var(--warn);line-height:1.7}.export-field-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.export-field-group{border:1px solid var(--line);border-radius:12px;padding:13px;background:#fbfcfe}.export-field-group h3{font-size:14px;margin:0 0 10px}.check-row{display:flex;align-items:center;gap:8px;font-weight:500;padding:5px 0}.check-row input{width:auto;flex:0 0 auto}
/* Login */.login-page{min-height:100vh;background:radial-gradient(circle at 20% 10%,#eef0ff 0,transparent 35%),var(--bg);display:grid;place-items:center;padding:20px}.login-shell{width:min(440px,100%)}.login-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:27px;box-shadow:0 22px 60px rgba(31,41,55,.09)}.login-brand{display:flex;align-items:center;gap:13px;margin-bottom:18px}.login-brand h1{font-size:20px;margin:0}.login-brand p{font-size:11px;color:var(--muted);margin:4px 0 0}.login-language{display:flex;gap:6px;background:#f4f5f8;padding:4px;border-radius:10px;margin-bottom:20px}.login-language a{flex:1;text-align:center;padding:7px 5px;border-radius:8px;color:#667080;font-size:11px;font-weight:700}.login-language a.active{background:#fff;color:var(--brand);box-shadow:0 2px 7px rgba(31,41,55,.07)}.login-card form label{margin-top:12px}.login-button{width:100%;margin-top:18px;height:43px}
@media(max-width:1150px){.cards{grid-template-columns:repeat(2,1fr)}.sidebar{width:210px;flex-basis:210px}.user-meta{display:none}.school-switch select{min-width:180px}.export-field-groups{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.app-shell,html[dir="rtl"] .app-shell,body.dir-rtl .app-shell{display:block}.sidebar{position:relative;height:auto;border-inline-end:0;border-bottom:1px solid var(--line);padding:9px 12px}.brand-wrap{padding-bottom:7px}.nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px}.nav-section{grid-column:1/-1;padding-top:9px}.sidebar-foot{display:none}.topbar{position:relative;height:auto;min-height:62px;align-items:stretch;flex-direction:column;padding:10px 12px}.top-search{max-width:none}.top-actions{width:100%;flex-wrap:wrap}.school-switch{flex:1}.school-switch select{width:100%;min-width:150px}.content{padding:14px 12px 35px}.cards,.split,.form-grid{grid-template-columns:1fr}.form-grid .full{grid-column:auto}.export-field-groups{grid-template-columns:1fr}.user-chip{display:none}}
@media(max-width:520px){.cards{grid-template-columns:1fr}.nav{grid-template-columns:1fr 1fr}.top-actions .add-new{order:3;flex:1}.compact-form select{min-width:100px}.page-heading h1{font-size:20px}.card{padding:14px}.toolbar form{width:100%}.toolbar .search{max-width:none;flex:1}}

/* ===== Responsive tablet / iPad / mobile — v1.2.8 ===== */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}body{min-width:0;overflow-x:hidden}.mobile-menu-toggle,.sidebar-backdrop{display:none}
button,input,select,textarea,a{-webkit-tap-highlight-color:transparent}.btn,button{touch-action:manipulation}.table-wrap{max-width:100%;-webkit-overflow-scrolling:touch;scrollbar-width:thin}.table-wrap table{min-width:max-content}.topbar,.sidebar{padding-top:max(9px,env(safe-area-inset-top))}.content{padding-bottom:max(45px,env(safe-area-inset-bottom))}

@media (max-width:1024px){
  .app-shell,.dir-rtl .app-shell,html[dir="rtl"] .app-shell{display:block!important;min-height:100dvh}
  .sidebar{position:fixed!important;top:0;bottom:0;left:0;right:auto;width:min(84vw,300px)!important;max-width:300px;flex-basis:auto!important;height:100dvh!important;z-index:70;transform:translateX(-105%);transition:transform .24s ease;box-shadow:0 18px 50px rgba(20,28,45,.18);border-inline-end:1px solid var(--line);border-bottom:0!important;padding:12px 14px max(12px,env(safe-area-inset-bottom));overflow-y:auto;overscroll-behavior:contain;background:var(--sidebar);display:flex!important}
  html[dir="rtl"] .sidebar,body.dir-rtl .sidebar{right:0;left:auto;transform:translateX(105%);border-inline-start:1px solid var(--line);border-inline-end:0}
  body.menu-open .sidebar,html[dir="rtl"] body.menu-open .sidebar,body.dir-rtl.menu-open .sidebar{transform:translateX(0)}
  body.menu-open{overflow:hidden;touch-action:none}
  .sidebar-backdrop{display:block;position:fixed;inset:0;background:rgba(18,25,38,.42);backdrop-filter:blur(1px);z-index:65;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}
  body.menu-open .sidebar-backdrop{opacity:1;visibility:visible;pointer-events:auto}
  .nav{display:flex!important;grid-template-columns:none!important}.nav-section{padding:17px 12px 7px!important}.sidebar-foot{display:flex!important;margin-top:8px}
  .mobile-menu-toggle{display:inline-flex;flex:0 0 44px;width:44px;height:44px;min-height:44px;padding:0;border:1px solid #dfe3ea;background:#fff;color:var(--text);border-radius:12px;align-items:center;justify-content:center;flex-direction:column;gap:4px;box-shadow:0 2px 8px rgba(31,41,55,.04)}
  .mobile-menu-toggle:hover{background:#f7f8fb;color:var(--text)}.mobile-menu-toggle span{display:block;width:19px;height:2px;border-radius:2px;background:currentColor}
  .main{width:100%;min-width:0}.topbar{position:sticky!important;top:0;z-index:40;height:auto!important;min-height:64px;display:flex!important;flex-wrap:wrap;align-items:center!important;gap:10px!important;padding-inline:max(12px,env(safe-area-inset-left)) max(12px,env(safe-area-inset-right))!important;padding-bottom:10px!important}
  .top-search{order:3;flex:1 0 100%;max-width:none!important}.top-search input{height:44px}.top-actions{order:2;flex:1;min-width:0;width:auto!important;justify-content:flex-end;flex-wrap:nowrap!important;gap:7px!important;margin-inline-start:0!important}.top-actions .add-new{white-space:nowrap}.school-switch{min-width:0;flex:1}.school-switch select{min-width:0!important;width:100%;max-width:250px}.compact-form select{height:44px}.user-chip{display:none!important}
  .content{max-width:none!important;padding:18px 16px max(34px,env(safe-area-inset-bottom))!important}.page-heading{margin-bottom:12px}.page-heading h1{font-size:22px}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))!important}.split{grid-template-columns:1fr!important;gap:14px!important}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important}.export-field-groups{grid-template-columns:repeat(2,minmax(0,1fr))!important}.permission-grid{grid-template-columns:1fr!important}
  .card{max-width:100%;padding:17px;margin-bottom:14px}.toolbar{gap:7px}.toolbar form{max-width:100%}.toolbar input,.toolbar select{min-width:0}
  .table-wrap{overflow-x:auto!important;overscroll-behavior-inline:contain}.table-wrap table{min-width:680px}.card>table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}.card>table tbody,.card>table thead{width:100%}
  th,td{padding:10px 11px}.btn,button{min-height:42px}.btn.small{min-height:36px;padding:7px 10px}
}

@media (max-width:700px){
  body{font-size:14px}.content{padding:14px 10px max(30px,env(safe-area-inset-bottom))!important}.topbar{padding-inline:10px!important}.mobile-menu-toggle{flex-basis:42px;width:42px;height:42px;min-height:42px}
  .top-actions{gap:5px!important}.top-actions .add-new{font-size:0;width:44px;padding:0;flex:0 0 44px}.top-actions .add-new span{font-size:22px}.compact-form select{font-size:13px;padding-inline:8px}.school-switch select{max-width:190px}.compact-form:not(.school-switch) select{max-width:108px}
  .cards{grid-template-columns:1fr!important;gap:10px!important}.form-grid,.export-field-groups{grid-template-columns:1fr!important}.form-grid .full{grid-column:auto!important}
  .page-heading{align-items:flex-start}.page-heading h1{font-size:20px}.page-heading p{font-size:11px}.card{padding:14px;border-radius:13px}.stat{padding:14px}.stat .n{font-size:24px}
  input,select,textarea{font-size:16px!important;min-height:44px}input[type="checkbox"],input[type="radio"]{min-height:0;width:auto}.check-row input{min-height:0}.login-card{padding:20px 17px}.login-page{padding:12px}.login-language a{padding:9px 4px}.login-button{height:46px}
  .toolbar{align-items:stretch}.toolbar form{width:100%!important}.toolbar form>*{flex:1 1 140px}.toolbar>.btn,.toolbar>button{flex:0 0 auto}.search{max-width:none!important;width:100%}
  .table-wrap{margin-inline:-2px;border-radius:9px}.table-wrap table{min-width:620px}th,td{padding:10px;font-size:12px}.table-wrap:after{content:"↔";position:sticky;inset-inline-end:8px;bottom:6px;float:inline-end;margin-top:-24px;background:rgba(32,39,53,.72);color:#fff;border-radius:999px;padding:2px 7px;font-size:11px;pointer-events:none;opacity:.55}
  .notice,.readonly-note,.flash{font-size:12px}.logo-preview{max-width:82px;max-height:60px}
}

@media (max-width:420px){
  .top-actions .school-switch{flex:1 1 145px}.school-switch select{max-width:none}.compact-form:not(.school-switch){flex:0 0 94px}.compact-form:not(.school-switch) select{width:94px}.page-heading h1{font-size:19px}.brand-copy small{max-width:175px}.sidebar{width:min(90vw,300px)!important}.card{padding:12px}.btn,button{padding-inline:11px}
}

@media (orientation:landscape) and (max-height:520px) and (max-width:1024px){
  .sidebar{padding-top:8px}.brand-wrap{padding-bottom:5px}.nav-section{padding-top:10px!important}.nav a{padding-block:8px}.sidebar-foot{padding-top:7px}.topbar{position:relative!important}
}

@media (prefers-reduced-motion:reduce){.sidebar,.sidebar-backdrop{transition:none!important}}

/* ===== Teacher ↔ class assignment — v1.3.0 ===== */
.teacher-class-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.teacher-class-item{display:flex;align-items:flex-start;gap:9px;border:1px solid var(--line);border-radius:10px;padding:10px;background:#fbfcfe;margin:0;cursor:pointer}.teacher-class-item:hover{border-color:#cfd5ff;background:#f8f9ff}.teacher-class-item input{width:auto;min-height:0;margin-top:3px;flex:0 0 auto}.teacher-class-item span{display:flex;flex-direction:column;min-width:0}.teacher-class-item b{font-size:12px}.teacher-class-item small{font-size:10px;color:var(--muted);margin-top:2px;line-height:1.45}
@media(max-width:700px){.teacher-class-grid{grid-template-columns:1fr}.teacher-class-item{padding:10px}}
/* V1.4.0 tenant/domain mode */
.tenant-school-chip{display:inline-flex;align-items:center;min-height:38px;padding:7px 12px;border:1px solid var(--line,#dfe6e3);border-radius:10px;background:#fff;font-weight:700;font-size:12px;white-space:nowrap}
@media(max-width:700px){.tenant-school-chip{max-width:160px;overflow:hidden;text-overflow:ellipsis}}