:root{--navy:#102a43;--blue:#2563eb;--cyan:#38bdf8;--bg:#f4f7fb;--text:#172b4d;--muted:#6b7c93;--line:#e4eaf1;--white:#fff;--shadow:0 8px 30px rgba(16,42,67,.08)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--blue);text-decoration:none}button,input,select{font:inherit}.sidebar{position:fixed;inset:0 auto 0 0;width:250px;background:linear-gradient(180deg,var(--navy),#0b2034);color:#fff;padding:22px 14px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:12px;padding:0 10px 24px}.brand strong,.brand small{display:block}.brand strong{font-size:18px}.brand small{color:#9fb3c8}.brand-mark{width:56px;height:56px;border-radius:18px;background:linear-gradient(135deg,var(--blue),var(--cyan));display:grid;place-items:center;color:#fff;font-weight:800;font-size:20px;box-shadow:0 10px 25px #2563eb55;margin:0 auto 18px}.brand-mark.small{width:42px;height:42px;border-radius:13px;margin:0;font-size:15px}.sidebar nav{display:grid;gap:5px}.sidebar nav a{padding:11px 13px;border-radius:10px;color:#cbd8e5;display:flex;align-items:center;gap:12px;font-weight:600}.sidebar nav a span{font-size:19px;width:22px;text-align:center}.sidebar nav a:hover,.sidebar nav a.active{background:#ffffff15;color:#fff}.sidebar nav a.active{box-shadow:inset 3px 0 var(--cyan)}.sidebar-user{margin-top:auto;border-top:1px solid #ffffff18;padding:18px 8px 0;display:flex;gap:9px;align-items:center}.sidebar-user strong,.sidebar-user small{display:block;max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-user small{color:#9fb3c8}.sidebar-user>a{margin-left:auto;color:#fff;font-size:21px}.main{margin-left:250px;min-height:100vh}.topbar{height:86px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 30px;position:sticky;top:0;z-index:10}.topbar h1{font-size:22px;margin:0}.topbar p{margin:4px 0 0;color:var(--muted)}.today{margin-left:auto;color:var(--muted);font-weight:600}.menu-btn{display:none;border:0;background:transparent;font-size:24px}.content{padding:26px;max-width:1650px;margin:auto}.card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:20px;margin-bottom:20px}.card-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:18px}.card-head h2{font-size:17px;margin:0}.card-head p{color:var(--muted);margin:4px 0 0}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:20px}.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);position:relative;overflow:hidden}.stat span,.stat small{display:block;color:var(--muted)}.stat strong{display:block;font-size:30px;margin:7px 0;color:var(--navy)}.grid.two{display:grid;grid-template-columns:1.35fr 1fr;gap:20px}.layout-list{display:grid;grid-template-columns:350px 1fr;gap:20px;align-items:start}.form-card{position:sticky;top:106px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-grid.wide{grid-template-columns:repeat(5,1fr)}label{font-weight:650;color:#344563;display:block}input,select{width:100%;border:1px solid #cfd8e3;border-radius:9px;padding:10px 11px;margin-top:6px;background:#fff;color:var(--text);outline:none}input:focus,select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #2563eb18}.check{display:flex;align-items:center;gap:8px}.check input{width:auto;margin:0}.btn{border:0;border-radius:9px;padding:10px 15px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn.primary{background:var(--blue);color:#fff;box-shadow:0 5px 12px #2563eb30}.btn.ghost{background:#eef4ff;color:var(--blue)}.btn.full{width:100%}.search{max-width:210px;margin:0}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th{color:#64748b;text-align:left;text-transform:uppercase;letter-spacing:.04em;font-size:11px;padding:11px 12px;border-bottom:1px solid var(--line);white-space:nowrap}td{padding:13px 12px;border-bottom:1px solid #edf1f5;vertical-align:middle}td strong,td small{display:block}td small{color:var(--muted);margin-top:3px}tbody tr:hover{background:#f8faff}.actions{white-space:nowrap}.actions form{display:inline}.actions a,.actions button{border:0;background:transparent;color:var(--blue);cursor:pointer;margin-right:8px;padding:0}.badge{display:inline-block;background:#eef1f5;color:#536273;padding:5px 9px;border-radius:99px;font-size:11px;font-weight:800}.badge.success{background:#e4f7ef;color:#087a53}.badge.danger{background:#fdebee;color:#b42332}.badge.warning{background:#fff5db;color:#9a6400}.badge.info{background:#e4f5ff;color:#08749b}.badge.secondary{background:#edf0f4;color:#5f6b7a}.alert{padding:13px 15px;border-radius:10px;margin-bottom:18px;font-weight:600}.alert.success{background:#def7ec;color:#076a49}.alert.danger{background:#fde8ea;color:#a61b2b}.activity-list{display:grid;gap:7px}.activity{display:flex;align-items:center;gap:11px;padding:9px;border-bottom:1px solid #edf1f5}.activity .badge{margin-left:auto}.avatar{background:#e7efff;color:var(--blue);width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-weight:800}.sidebar-user .avatar{width:36px;height:36px}.activity strong,.activity small{display:block}.activity small{color:var(--muted);margin-top:3px}.empty{text-align:center;color:var(--muted);padding:30px!important}.inline-form,.report-filter{display:flex;align-items:end;gap:12px;flex-wrap:wrap}.inline-form label,.report-filter label{min-width:150px}.date-label{margin-left:auto;font-weight:750}.attendance-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.attendance-card{margin:0}.class-top{display:flex;justify-content:space-between;gap:15px}.class-top h3{margin:6px 0 4px}.class-top p{margin:0;color:var(--muted)}.subject-code{color:var(--blue);font-size:12px;font-weight:800}.class-time{font-weight:800;text-align:right;white-space:nowrap}.class-time small{display:block;color:var(--muted);margin-top:4px}.class-meta{display:flex;gap:18px;padding:12px 0;margin:14px 0;border-block:1px solid var(--line);color:var(--muted)}.attendance-card label{margin-top:11px}.empty-state{grid-column:1/-1;text-align:center;padding:55px}.empty-state>div{font-size:40px;color:#9fb3c8}.report-stats{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:18px}.report-stats div{background:#fff;border:1px solid var(--line);padding:14px;border-radius:12px}.report-stats span,.report-stats strong{display:block}.report-stats span{color:var(--muted);font-size:12px}.report-stats strong{font-size:22px}.print-header,.print-footer{display:none}.settings-card{max-width:700px}.auth-body{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at top right,#ddecff,transparent 40%),linear-gradient(135deg,#eef4fb,#f8fbff);padding:20px}.auth-card{width:min(420px,100%);background:#fff;border:1px solid var(--line);border-radius:22px;padding:35px;box-shadow:0 20px 55px rgba(16,42,67,.15);text-align:center}.auth-card h1{margin:0}.muted,.auth-help{color:var(--muted)}.stack{text-align:left;display:grid;gap:15px;margin-top:25px}.auth-help{margin:18px 0 0}
@media(max-width:1200px){.form-grid.wide{grid-template-columns:repeat(3,1fr)}.attendance-grid{grid-template-columns:repeat(2,1fr)}.layout-list{grid-template-columns:310px 1fr}}@media(max-width:900px){.sidebar{transform:translateX(-100%);transition:.25s}.sidebar.open{transform:none}.main{margin-left:0}.menu-btn{display:block}.stat-grid{grid-template-columns:repeat(2,1fr)}.grid.two,.layout-list{grid-template-columns:1fr}.form-card{position:static}.attendance-grid{grid-template-columns:1fr}.today{display:none}.report-stats{grid-template-columns:repeat(3,1fr)}}@media(max-width:600px){.content{padding:15px}.topbar{padding:0 15px;height:75px}.stat-grid{gap:10px}.stat{padding:15px}.form-grid,.form-grid.wide{grid-template-columns:1fr}.card{padding:15px}.search{max-width:140px}.report-stats{grid-template-columns:repeat(2,1fr)}}
@media print{body{background:#fff;font-size:11px}.sidebar,.topbar,.no-print,.alert{display:none!important}.main{margin:0}.content{padding:0;max-width:none}.print-header{display:block;text-align:center;margin-bottom:16px}.print-header h1,.print-header h2,.print-header p{margin:3px}.report-card{border:0;box-shadow:none;padding:0}.print-footer{display:block;text-align:center;margin-top:15px}.report-stats{grid-template-columns:repeat(6,1fr);gap:6px}.report-stats div{padding:7px}th,td{padding:6px 5px}.badge{padding:2px 5px}.table-wrap{overflow:visible}@page{size:landscape;margin:12mm}}