:root{
  --obs-navy:#132236;
  --obs-navy-2:#0e1a2b;
  --obs-line:#cfd6df;
  --obs-soft:#f4f6f8;
  --obs-head:#eef2f6;
  --obs-accent:#1f6fb2;
  --obs-success:#157347;
  --obs-warning:#b7791f;
  --obs-danger:#b42318;
}
*{scrollbar-width:thin;scrollbar-color:#94a3b8 #e5e7eb}
body{background:#edf1f5;color:#1f2937;font-size:13px}
.obs-shell{min-height:100vh;display:flex;background:#edf1f5}
.obs-sidebar{width:282px;min-height:100vh;background:linear-gradient(180deg,var(--obs-navy),var(--obs-navy-2));color:#d7dde7;position:fixed;left:0;top:0;bottom:0;z-index:30;box-shadow:3px 0 14px rgba(15,23,42,.28)}
.obs-main{margin-left:282px;min-height:100vh;width:calc(100% - 282px)}
.uni-brand{height:86px;display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid rgba(255,255,255,.10)}
.uni-logo{width:44px;height:44px;object-fit:contain;display:block;flex:0 0 44px;border-radius:4px}
.sidebar-title{padding:14px 16px;font-size:16px;text-align:center;border-bottom:1px solid rgba(255,255,255,.1);color:#fff;font-weight:600}
.nav-group-title{padding:10px 14px 6px;color:#93a4b8;font-size:11px;text-transform:uppercase;letter-spacing:.06em}
.obs-nav a,.obs-nav button{display:flex;align-items:center;width:100%;gap:8px;padding:9px 14px;color:#cbd5e1;border-left:3px solid transparent;text-align:left;transition:.16s;background:transparent}
.obs-nav a:hover,.obs-nav button:hover{background:rgba(255,255,255,.06);color:#fff}
.obs-nav a.active{background:rgba(255,255,255,.10);border-left-color:#60a5fa;color:#fff;font-weight:600}
.obs-nav .sub a{padding:8px 14px 8px 34px;font-size:12px;color:#d1d5db}
.obs-nav .sub a.active{color:#fff;background:rgba(37,99,235,.20)}
.obs-topbar{height:58px;background:#fff;border-bottom:1px solid var(--obs-line);display:flex;align-items:center;justify-content:space-between;padding:0 18px;position:sticky;top:0;z-index:20;box-shadow:0 1px 2px rgba(15,23,42,.04)}
.breadcrumb{font-size:12px;color:#64748b}.breadcrumb b{color:#1e293b}
.user-chip{display:flex;align-items:center;gap:9px;border:1px solid #d8dee7;border-radius:4px;padding:6px 9px;background:#f8fafc}
.user-avatar{width:28px;height:28px;border-radius:50%;background:#1f6fb2;color:white;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:11px}
.obs-content{padding:12px 14px 34px}.obs-card{background:#fff;border:1px solid var(--obs-line);border-radius:5px;box-shadow:0 1px 3px rgba(15,23,42,.08);overflow:hidden;margin-bottom:12px}.obs-card-header{background:linear-gradient(#fbfcfe,#eef2f6);border-bottom:1px solid var(--obs-line);padding:8px 10px;display:flex;align-items:center;justify-content:space-between;min-height:38px}.obs-card-title{font-weight:700;color:#1e293b}.obs-card-body{padding:10px}.obs-filter-grid{display:grid;grid-template-columns:160px minmax(180px,1fr) 150px minmax(180px,1fr) 150px 220px;gap:6px 10px;align-items:center}.obs-label{font-size:12px;color:#334155;white-space:nowrap}.obs-input,.obs-select{width:100%;height:28px;border:1px solid #bfc8d4;background:#fff;border-radius:3px;padding:3px 8px;outline:none;color:#111827}.obs-input:focus,.obs-select:focus{border-color:#1f6fb2;box-shadow:0 0 0 2px rgba(31,111,178,.14)}.obs-check{display:inline-flex;align-items:center;gap:6px;white-space:nowrap}.obs-btn{height:28px;border:1px solid #b9c3cf;background:linear-gradient(#fff,#eef2f7);padding:0 12px;border-radius:3px;font-weight:600;color:#334155;display:inline-flex;align-items:center;gap:6px;justify-content:center}.obs-btn:hover{background:#e2e8f0}.obs-btn-primary{background:linear-gradient(#2d7fc2,#1f6fb2);border-color:#1f6fb2;color:#fff}.obs-btn-primary:hover{background:#1b5f99}.obs-btn-danger{background:#b42318;border-color:#991b1b;color:#fff}.obs-btn-success{background:#157347;border-color:#146c43;color:#fff}.obs-tabs{display:flex;gap:0;border-bottom:1px solid var(--obs-line);background:#f8fafc}.obs-tab{padding:9px 12px;border-right:1px solid var(--obs-line);background:#f8fafc;color:#334155}.obs-tab.active{background:#fff;border-top:2px solid #e28a00;color:#111827;font-weight:600;margin-top:-1px}.obs-table-wrap{overflow-x:auto}.obs-table{width:100%;border-collapse:collapse;background:#fff;min-width:1060px}.obs-table th{background:#666;color:#fff;font-weight:600;text-align:left;padding:6px 7px;border-right:1px solid #808080;white-space:nowrap}.obs-table td{padding:6px 7px;border-bottom:1px solid #d9dee7;border-right:1px solid #edf1f5;white-space:nowrap;color:#172033}.obs-table tr:hover td{background:#f6fbff}.obs-table tr.selected td{background:#d3dae3}.row-mark{width:5px;height:19px;display:inline-block;border-radius:1px;vertical-align:middle}.mark-green{background:#1c7c2b}.mark-blue{background:#4267e8}.mark-red{background:#e11d1d}.mark-orange{background:#f59e0b}.action-select{height:24px;border:1px solid #d1d5db;border-radius:3px;background:#f8fafc;min-width:170px;color:#475569;padding-left:8px}.table-footer{background:#666;color:#fff;padding:5px 9px;display:flex;justify-content:center;align-items:center;gap:10px}.legend{display:flex;flex-wrap:wrap;gap:20px;padding:10px;background:#fff;border-top:1px solid #d7dde6}.legend-item{display:flex;align-items:center;gap:8px;font-size:12px}.legend-color{width:5px;height:18px;display:inline-block}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.stat-card{background:#fff;border:1px solid var(--obs-line);border-radius:5px;padding:12px;box-shadow:0 1px 3px rgba(15,23,42,.06)}.stat-value{font-size:26px;font-weight:800;color:#172033}.stat-label{font-size:12px;color:#64748b}.status-pill{padding:2px 8px;border-radius:999px;font-size:11px;font-weight:700;border:1px solid transparent}.pill-ok{background:#eaf7ef;color:#157347;border-color:#bfe6cd}.pill-warn{background:#fff7e6;color:#946200;border-color:#f3d18d}.pill-danger{background:#fff0f0;color:#b42318;border-color:#ffc9c9}.pill-info{background:#eaf4ff;color:#1f6fb2;border-color:#bddcff}.form-grid{display:grid;grid-template-columns:180px 1fr 180px 1fr;gap:8px 12px;align-items:center}.form-section-title{font-weight:700;color:#1e293b;background:#f1f5f9;border:1px solid #d8dee7;padding:7px 10px;margin:10px 0}.login-bg{min-height:100vh;background:linear-gradient(135deg,#0e1a2b,#173759 58%,#eef2f6 58%);display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:430px;background:#fff;border:1px solid #cbd5e1;border-radius:8px;box-shadow:0 24px 70px rgba(15,23,42,.28);overflow:hidden}.login-head{background:#132236;color:#fff;padding:20px}.qr-box{width:230px;height:230px;background:#fff;border:1px solid #cbd5e1;display:flex;align-items:center;justify-content:center;padding:12px}.real-qr{width:206px;height:206px;display:flex;align-items:center;justify-content:center}.qr-box canvas,.qr-box img,.qr-box table{width:206px!important;height:206px!important;max-width:100%;max-height:100%}.qr-box img{object-fit:contain;image-rendering:pixelated}.qr-cell{border-radius:2px}.qr-dark{background:#111827}.qr-blue{background:#1f6fb2}.progress{height:9px;border-radius:999px;background:#dbe3ed;overflow:hidden}.progress span{height:100%;display:block;background:#1f6fb2}.mobile-open{display:none}@media (max-width:980px){.obs-sidebar{transform:translateX(-100%);transition:.2s}.obs-sidebar.open{transform:translateX(0)}.obs-main{margin-left:0;width:100%}.mobile-open{display:inline-flex}.obs-filter-grid,.form-grid{grid-template-columns:1fr}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.app-alert{margin:0 0 12px 0;padding:10px 12px;border-radius:5px;border:1px solid;font-weight:600}.alert-success{background:#eaf7ef;color:#157347;border-color:#bfe6cd}.alert-error{background:#fff0f0;color:#b42318;border-color:#ffc9c9}.alert-info{background:#eaf4ff;color:#1f6fb2;border-color:#bddcff}.alert-warning{background:#fff7e6;color:#8a4b08;border-color:#f4d08a}.empty-state{padding:26px;text-align:center;color:#64748b;background:#f8fafc;border:1px dashed #cbd5e1;border-radius:6px}.small-muted{font-size:12px;color:#64748b}.login-note{background:#f8fafc;border:1px solid #d8dee7;border-radius:6px;padding:10px;color:#334155;font-size:12px}.attendance-success{max-width:560px;margin:0 auto;background:#fff;border:1px solid #cfd6df;border-radius:10px;box-shadow:0 18px 45px rgba(15,23,42,.18);overflow:hidden}.attendance-success-head{background:#132236;color:white;padding:20px}.attendance-success-body{padding:20px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}.badge-line{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.table-actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.mini-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}@media (max-width:720px){.mini-card-grid{grid-template-columns:1fr}.obs-card-header{align-items:flex-start;gap:8px;flex-direction:column}.obs-card-header>div:last-child{width:100%}}
.obs-section-title{font-weight:700;color:#1e293b;background:#f8fafc;border:1px solid #d8dee7;border-radius:4px;padding:7px 10px;margin:0 0 10px 0}.checkbox-line{display:flex;align-items:center;gap:7px;color:#334155;font-size:12px;min-height:28px}.obs-btn-secondary{background:linear-gradient(#fff,#eef2f7);border-color:#b9c3cf;color:#334155}
.profile-link{text-decoration:none;color:inherit;cursor:pointer}.profile-link:hover{background:#eef6ff;border-color:#9cc6ef}
.field-help{font-size:11px;color:#64748b;margin-top:4px}.danger-note{background:#fff7ed;border:1px solid #fed7aa;border-radius:5px;padding:9px 10px;color:#9a3412;font-size:12px;line-height:1.5}


/* Layout and responsive CSS fixes */
*,*::before,*::after{box-sizing:border-box}
html{min-width:320px;scroll-behavior:smooth}
body{margin:0;min-width:320px;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.45}
button,input,select,textarea{font:inherit}
button,a,select{touch-action:manipulation}
img,svg,canvas{max-width:100%}
.obs-shell{width:100%;min-width:0}
.obs-main{min-width:0}
.obs-content{min-width:0}
.obs-card,.obs-card-body,.obs-card-header{min-width:0}
.obs-card-header{flex-wrap:wrap}
.obs-card-header>div{min-width:0}
.obs-filter-grid>*,
.form-grid>*{min-width:0}
.obs-input,.obs-select,.action-select,
input,select,textarea{max-width:100%}
.obs-table-wrap{max-width:100%;overscroll-behavior-x:contain}
.obs-table{width:100%}
.obs-btn{cursor:pointer;white-space:nowrap;text-decoration:none;line-height:1.2}
.obs-btn:focus-visible,.obs-nav a:focus-visible,.obs-nav button:focus-visible,
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #60a5fa;outline-offset:2px}
.obs-nav a,.obs-nav button{text-decoration:none;cursor:pointer;font:inherit}
.obs-nav button{border-top:0;border-right:0;border-bottom:0}
.login-card,.attendance-success{min-width:0}
.qr-box{max-width:100%}
.mini-card-grid>*{min-width:0}
@media (max-width:1200px){
  .obs-filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-grid{grid-template-columns:160px minmax(0,1fr)}
}
@media (max-width:980px){
  .obs-sidebar{width:min(282px,86vw);overflow-y:auto;overscroll-behavior:contain}
  .obs-main{margin-left:0;width:100%}
  .obs-topbar{padding:0 12px}
  .obs-content{padding:12px 10px 28px}
  .obs-filter-grid,.form-grid{grid-template-columns:minmax(0,1fr)}
  .obs-label{white-space:normal}
  .obs-table{min-width:900px}
}
@media (max-width:720px){
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mini-card-grid{grid-template-columns:minmax(0,1fr)}
  .obs-card-header{align-items:stretch}
  .obs-card-header>div:last-child{width:100%;display:flex;flex-wrap:wrap;gap:6px}
  .obs-card-header .obs-btn{max-width:100%}
  .table-actions{align-items:stretch}
  .table-actions .obs-btn{flex:1 1 auto}
  .login-bg{padding:14px}
  .login-card{max-width:100%}
  .qr-box{width:min(230px,100%);height:auto;aspect-ratio:1;margin-inline:auto}
  .qr-box canvas,.qr-box img,.qr-box table{width:100%!important;height:100%!important}
  .real-qr{width:100%;height:100%}
  .attendance-success-body,.attendance-success-head{padding:16px}
}
@media (max-width:420px){
  .stat-grid{grid-template-columns:minmax(0,1fr)}
  .obs-topbar{gap:8px}
  .user-chip{gap:5px;padding:4px 6px}
  .obs-content{padding-inline:8px}
  .obs-btn{padding-inline:8px}
}