:root{--navy:#0b1220;--navy2:#111c32;--brand:#2563eb;--brand2:#4f46e5;--cyan:#06b6d4;--bg:#f4f7fb;--panel:#fff;--text:#172033;--muted:#667085;--line:#e7ebf2;--success:#16a34a;--danger:#dc2626;--warn:#d97706;--shadow:0 12px 35px rgba(15,23,42,.07)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0}.login{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 10% 10%,#dbeafe 0,transparent 32%),radial-gradient(circle at 90% 90%,#e0e7ff 0,transparent 35%),#f8fafc}.login-card{width:min(470px,100%);background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.8);border-radius:24px;padding:34px;box-shadow:0 25px 80px rgba(30,64,175,.14);backdrop-filter:blur(12px)}.brand-lockup{display:flex;align-items:center;gap:12px;margin-bottom:8px}.logo-mark{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:900;box-shadow:0 10px 22px rgba(37,99,235,.25)}.brand{font-size:30px;font-weight:900;letter-spacing:-1px}.eyebrow{font-size:11px;font-weight:900;letter-spacing:.14em;color:var(--brand);margin-bottom:7px}.muted{color:var(--muted)}.field{margin:15px 0}.field label{display:block;font-size:12px;font-weight:800;margin-bottom:7px;color:#344054}.field input,.field select,.field textarea{width:100%;padding:12px 13px;border:1px solid #d8dee9;border-radius:11px;background:#fff;outline:none;transition:.18s}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(37,99,235,.09)}.btn{padding:11px 15px;border-radius:10px;font-weight:800;transition:.18s}.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 7px 18px rgba(37,99,235,.2)}.btn-primary:hover{transform:translateY(-1px)}.btn-secondary{background:#eef2ff;color:#3147a8}.btn-danger{background:#fee2e2;color:#991b1b}.shell{display:flex;min-height:100vh}.sidebar{width:258px;background:linear-gradient(180deg,var(--navy),#111827);color:#fff;padding:20px;position:fixed;inset:0 auto 0 0;overflow:auto;box-shadow:8px 0 35px rgba(15,23,42,.08)}.side-brand{display:flex;align-items:center;gap:10px;font-size:23px;font-weight:900;margin:5px 8px 26px}.side-brand .logo-mark{width:38px;height:38px;border-radius:11px}.side-user{padding:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);border-radius:14px;margin-bottom:18px}.nav button{width:100%;text-align:left;padding:11px 12px;border-radius:10px;background:transparent;color:#b9c4d7;margin:3px 0}.nav button.active,.nav button:hover{background:linear-gradient(135deg,#1d4ed8,#4338ca);color:#fff}.main{margin-left:258px;flex:1;padding:30px;max-width:1700px}.topbar{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:24px}.topbar h1{margin:0;font-size:27px;letter-spacing:-.5px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:20px}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.card .num{font-size:31px;font-weight:900;margin-top:6px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.panel{background:#fff;border:1px solid var(--line);border-radius:17px;padding:21px;box-shadow:var(--shadow);margin-bottom:18px}.panel h2{margin:0 0 14px;font-size:19px}.hero-panel{display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,#fff,#f5f8ff);border-color:#dbe5ff}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:12px 9px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;white-space:nowrap}.table th{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.badge{display:inline-flex;padding:6px 9px;border-radius:999px;font-size:11px;font-weight:900}.ok{background:#dcfce7;color:#166534}.bad{background:#fee2e2;color:#991b1b}.warn{background:#fef3c7;color:#92400e}.info{background:#dbeafe;color:#1e40af}.actions{display:flex;gap:8px;flex-wrap:wrap}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.full{grid-column:1/-1}.toast{position:fixed;right:20px;bottom:20px;background:#111827;color:#fff;padding:13px 17px;border-radius:11px;display:none;z-index:99;box-shadow:0 12px 30px rgba(0,0,0,.2)}.teacher-clock{display:flex;align-items:center;justify-content:space-between;gap:15px;background:#eff6ff;border:1px solid #bfdbfe;padding:15px;border-radius:13px;margin-bottom:15px}.student-check{display:grid;grid-template-columns:1fr 150px 1fr;gap:10px;align-items:center;padding:11px 0;border-bottom:1px solid var(--line)}.empty{padding:32px;text-align:center;color:var(--muted)}.notice{padding:16px;border:1px solid #e2e8f0;border-radius:12px;margin:10px 0;background:#fff}.notice.urgent{border-left:4px solid var(--danger)}.notice.unread{background:#f8fafc}.child-card{padding:16px;border:1px solid #e2e8f0;border-radius:12px;margin:10px 0}.result-card h3{margin:8px 0}.result-score{font-size:34px;font-weight:900;margin:12px 0}.result-score span{font-size:15px;color:var(--muted);font-weight:700}@media(max-width:800px){.sidebar{width:72px;padding:10px}.side-brand{font-size:0}.side-brand .logo-mark{margin:auto}.side-user,.nav span{display:none}.main{margin-left:72px;padding:16px}.grid,.form-grid{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}.student-check{grid-template-columns:1fr}.hero-panel{align-items:flex-start;flex-direction:column;gap:12px}}
.modal{position:fixed;inset:0;background:rgba(2,6,23,.62);display:none;align-items:center;justify-content:center;padding:20px;z-index:120}.modal.show{display:flex}.modal-box{width:min(720px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:20px;padding:22px;box-shadow:0 30px 90px rgba(2,6,23,.28)}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.modal-head h2{margin:0}.close{width:36px;height:36px;border-radius:50%;background:#eef2f7;color:#334155;font-size:22px}.search{width:100%;padding:11px 13px;border:1px solid #d8dee9;border-radius:10px;background:#fff}.filterbar{display:grid;grid-template-columns:2fr 1fr;gap:10px;margin-bottom:14px}.panel .topbar{margin-bottom:12px}.panel .topbar h2{margin:0}.btn-danger{border:0}.notice .topbar{margin-bottom:7px}@media(max-width:800px){.filterbar{grid-template-columns:1fr}.modal-box{padding:17px}}

.sheet-table input{width:100%;min-width:95px;padding:8px 9px;border:1px solid #d8dee9;border-radius:7px;background:#fff;color:var(--text)}.sheet-table input:focus{outline:2px solid #bfdbfe;border-color:var(--brand)}.sheet-table .sheet-wide{min-width:240px}.sheet-table td{padding:6px}.sheet-table td:last-child{min-width:160px}.field select[multiple]{min-height:110px}

/* Responsive mobile usability improvements (v10.4.2) */
html{width:100%;min-height:100%;-webkit-text-size-adjust:100%;text-size-adjust:100%}body{min-width:320px;overflow-x:hidden}.shell,.main,#app{min-width:0;max-width:100%}.main{min-width:0}.mobile-topline{display:flex;align-items:center;gap:10px;min-width:0}.mobile-menu-toggle{display:none;align-items:center;gap:8px;background:#eaf0ff;color:#1e40af;border:1px solid #dbe5ff;border-radius:10px;padding:10px 12px;font-weight:800;white-space:nowrap}.mobile-nav-overlay{display:none}
@media(max-width:800px){
 .shell{display:block;min-height:100dvh}.sidebar{width:min(84vw,310px);max-width:310px;padding:18px;z-index:151;transform:translateX(-105%);transition:transform .22s ease;box-shadow:12px 0 35px rgba(2,6,23,.24);padding-bottom:calc(20px + env(safe-area-inset-bottom))}.sidebar.mobile-open{transform:translateX(0)}.side-brand{font-size:22px;margin:5px 4px 20px}.side-brand span{display:inline}.side-user{display:block}.nav span{display:inline}.nav button{display:flex;align-items:center;gap:10px;min-height:44px;font-size:14px}.nav button span{display:inline}.sidebar .btn{min-height:44px}.mobile-nav-overlay.show{display:block;position:fixed;inset:0;background:rgba(15,23,42,.52);z-index:150;touch-action:manipulation}.main{margin-left:0;width:100%;max-width:100%;padding:14px 12px calc(24px + env(safe-area-inset-bottom))}.topbar{flex-direction:row;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}.topbar h1{font-size:clamp(20px,5vw,26px);line-height:1.2;overflow-wrap:anywhere}.topbar .muted{font-size:12px;line-height:1.4;margin-top:4px}.mobile-topline{flex:1;min-width:0;align-items:flex-start}.mobile-menu-toggle{display:inline-flex;flex-shrink:0}.topbar>.actions{flex-shrink:0}.topbar .actions .btn{padding:9px 10px;font-size:13px}.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.card{padding:14px;border-radius:13px;min-width:0}.card .num{font-size:clamp(22px,6vw,29px);overflow-wrap:anywhere}.grid,.form-grid{grid-template-columns:minmax(0,1fr);gap:12px}.panel{padding:14px;border-radius:14px;margin-bottom:12px;min-width:0}.panel h2{font-size:17px;line-height:1.35}.hero-panel{gap:12px}.hero-panel>.btn,.hero-panel button{max-width:100%;white-space:normal}.field input,.field select,.field textarea,.search{font-size:16px;min-height:44px}.btn{min-height:42px;padding:10px 12px}.actions{gap:7px}.actions .btn{max-width:100%;white-space:normal}.table-wrap{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.table{min-width:620px}.filterbar{grid-template-columns:minmax(0,1fr)}.student-check{grid-template-columns:minmax(0,1fr);gap:8px}.teacher-clock{align-items:stretch;flex-direction:column}.modal{padding:10px}.modal-box{width:100%;max-height:calc(100dvh - 20px);padding:15px;border-radius:15px}.login{min-height:100dvh;padding:16px}.login-card{padding:24px 18px;border-radius:18px}.brand{font-size:27px}.toast{left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));font-size:14px}
}
@media(max-width:380px){.main{padding:10px 8px}.cards{grid-template-columns:minmax(0,1fr)}.topbar{gap:7px}.mobile-menu-toggle{padding:9px}.topbar .actions .btn{padding:8px}.panel{padding:12px}.login-card{padding:20px 15px}}
@media(prefers-reduced-motion:reduce){.sidebar{transition:none}}

/* v10.4.3 layout correction: keep title/menu and action buttons in separate topbar columns */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px}
.mobile-topline{display:flex;align-items:center;gap:12px;flex:1;min-width:0}
.topbar-title{min-width:0}
.topbar-actions{display:flex;align-items:center;justify-content:flex-end;flex-shrink:0}
@media(max-width:800px){
  .topbar{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:10px}
  .mobile-topline{flex:1;min-width:0;align-items:center}
  .topbar-title h1{font-size:clamp(18px,4.8vw,25px);overflow-wrap:anywhere}
  .topbar-actions{flex:0 0 auto;max-width:45%;gap:6px}
  .topbar-actions .btn{white-space:normal;min-width:0;padding:8px 9px}
}
@media(min-width:801px){
  .sidebar{width:258px;transform:none}
  .main{margin-left:258px}
  .mobile-menu-toggle,.mobile-nav-overlay{display:none!important}
}

.logo-image{width:46px;height:46px;object-fit:contain;display:block;flex-shrink:0}.side-brand .logo-image{width:38px;height:38px}@media(max-width:800px){.side-brand .logo-image{margin:auto}}