:root{
    --navy:#0d1b2a;
    --navy-2:#132238;
    --blue:#2563eb;
    --blue-soft:#eaf1ff;
    --bg:#f4f7fb;
    --card:#ffffff;
    --text:#172033;
    --muted:#718096;
    --border:#e4eaf2;
    --shadow:0 16px 40px rgba(17,32,51,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text)}
body{background:var(--bg)}
a{text-decoration:none;color:inherit}
.login-page{min-height:100vh;background:#fff}
.login-shell{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr}
.login-brand{padding:64px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(145deg,var(--navy),#17375f);color:#fff}
.brand-pill{display:inline-flex;padding:8px 12px;border:1px solid rgba(255,255,255,.2);border-radius:999px;font-size:12px;letter-spacing:.12em}
.login-brand h1{font-size:72px;line-height:1;margin:28px 0 8px;letter-spacing:-.04em}
.brand-tagline{font-size:22px;margin:0 0 28px;color:#dce8ff}
.brand-copy{max-width:540px;font-size:17px;line-height:1.7;color:#b8c8df}
.brand-footer{font-size:13px;color:#9eb0c9}
.login-form-wrap{display:flex;align-items:center;justify-content:center;padding:40px;background:#f8fafc}
.login-card{width:min(430px,100%);background:#fff;border:1px solid var(--border);border-radius:24px;padding:38px;box-shadow:var(--shadow)}
.mobile-logo{display:none;color:var(--blue);font-weight:900;letter-spacing:.08em}
.login-card h2{font-size:30px;margin:0 0 8px}
.muted{color:var(--muted);line-height:1.6;margin:0 0 28px}
.login-card label{display:block;font-size:13px;font-weight:700;margin:18px 0 8px}
.login-card input{width:100%;border:1px solid #d9e1ec;border-radius:12px;padding:14px 15px;font-size:15px;outline:none;transition:.2s}
.login-card input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(37,99,235,.09)}
.login-card button{width:100%;margin-top:24px;border:0;border-radius:12px;background:var(--blue);color:#fff;padding:15px;font-weight:800;font-size:15px;cursor:pointer}
.login-note{background:#f6f8fb;border-radius:12px;padding:13px 15px;font-size:12px;line-height:1.7;color:#64748b;margin:18px 0 0}
.alert{background:#fff1f2;color:#b42318;border:1px solid #ffd1d5;padding:12px 14px;border-radius:10px;font-size:13px;margin-bottom:18px}
.topbar{height:76px;padding:0 26px;display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.app-logo{font-weight:900;color:var(--blue);letter-spacing:.1em;font-size:21px}
.school-name{font-size:12px;color:var(--muted);margin-top:3px}
.topbar-user{display:flex;align-items:center;gap:18px;text-align:right}
.topbar-user strong{display:block;font-size:13px}
.topbar-user span{font-size:11px;color:var(--muted)}
.btn-logout{border:1px solid var(--border);padding:9px 12px;border-radius:10px;font-size:12px;font-weight:700;background:#fff}
.app-layout{display:grid;grid-template-columns:245px 1fr;min-height:calc(100vh - 76px)}
.sidebar{background:var(--navy);padding:22px 14px;min-height:100%}
.nav-item{display:flex;align-items:center;justify-content:space-between;padding:13px 14px;border-radius:10px;color:#c9d6e8;font-size:13px;margin-bottom:5px}
.nav-item.active{background:rgba(255,255,255,.1);color:#fff;font-weight:800}
.nav-item.disabled{opacity:.7}
.nav-item span{font-size:9px;padding:3px 6px;border-radius:999px;background:rgba(255,255,255,.08)}
.sidebar-note{margin-top:28px;padding:14px;border-radius:12px;background:rgba(255,255,255,.06);color:#9fb1c9;font-size:11px;line-height:1.6}
.sidebar-note strong{display:block;color:#fff;margin-bottom:5px}
.content{padding:32px;max-width:1500px;width:100%}
.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.eyebrow{font-size:10px;letter-spacing:.14em;font-weight:900;color:var(--blue)}
.page-heading h1{font-size:31px;margin:6px 0 5px;letter-spacing:-.025em}
.page-heading p{margin:0;color:var(--muted);font-size:13px}
.index-box{background:var(--navy);color:#fff;border-radius:16px;padding:16px 20px;min-width:180px}
.index-box span{display:block;color:#adbed4;font-size:10px;text-transform:uppercase;letter-spacing:.08em}
.index-box strong{display:block;font-size:28px;margin-top:5px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:0 8px 20px rgba(17,32,51,.035)}
.stat-card span{display:block;font-size:12px;color:var(--muted)}
.stat-card strong{display:block;font-size:34px;margin:8px 0 3px;letter-spacing:-.04em}
.stat-card small{font-size:11px;color:#94a3b8}
.stat-card.highlight{background:var(--blue);color:#fff;border-color:var(--blue)}
.stat-card.highlight span,.stat-card.highlight small{color:#dbe7ff}
.attendance-panel,.welcome-panel{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;margin-top:18px}
.panel-title{display:flex;align-items:center;justify-content:space-between;gap:15px}
.panel-title h2,.welcome-panel h2{margin:5px 0 0;font-size:20px}
.status-badge{font-size:10px;padding:7px 10px;border-radius:999px;background:var(--blue-soft);color:var(--blue);font-weight:800}
.attendance-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:20px}
.attendance-item{padding:16px;border-radius:14px;background:#f7f9fc;border:1px solid #edf1f6}
.attendance-item span{font-size:11px;color:var(--muted)}
.attendance-item strong{display:block;font-size:26px;margin-top:4px}
.welcome-panel{background:linear-gradient(135deg,#ffffff,#f5f9ff)}
.welcome-panel p{color:var(--muted);line-height:1.75;max-width:900px;font-size:13px}
@media(max-width:950px){
    .login-shell{grid-template-columns:1fr}
    .login-brand{display:none}
    .mobile-logo{display:block;margin-bottom:22px}
    .app-layout{grid-template-columns:1fr}
    .sidebar{display:none}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .attendance-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
    .content{padding:20px 15px}
    .topbar{padding:0 15px}
    .school-name{max-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .topbar-user>div{display:none}
    .page-heading{align-items:stretch;flex-direction:column}
    .index-box{width:100%}
    .stats-grid{grid-template-columns:1fr 1fr;gap:10px}
    .stat-card{padding:16px}
    .stat-card strong{font-size:28px}
    .attendance-grid{grid-template-columns:1fr 1fr}
    .login-form-wrap{padding:20px}
    .login-card{padding:28px 22px}
}


/* ===== STAGE 2 MASTER DATA ===== */
.page-actions{display:flex;gap:10px;flex-wrap:wrap}
.btn-primary,.btn-secondary,.btn-danger,.btn-light{
    display:inline-flex;align-items:center;justify-content:center;gap:7px;
    padding:10px 14px;border-radius:10px;font-size:12px;font-weight:800;border:1px solid transparent;cursor:pointer
}
.btn-primary{background:var(--blue);color:#fff}
.btn-secondary{background:var(--navy);color:#fff}
.btn-light{background:#fff;color:var(--text);border-color:var(--border)}
.btn-danger{background:#fff1f2;color:#b42318;border-color:#ffd3d8}
.content-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:20px;margin-top:18px}
.table-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.search-box{display:flex;gap:8px;flex:1;max-width:520px}
.search-box input,.form-control,.form-select,.form-textarea{
    width:100%;border:1px solid #d9e1ec;border-radius:10px;padding:11px 12px;font-size:13px;outline:none;background:#fff
}
.search-box input:focus,.form-control:focus,.form-select:focus,.form-textarea:focus{
    border-color:var(--blue);box-shadow:0 0 0 4px rgba(37,99,235,.08)
}
.table-wrap{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:12px;min-width:760px}
.data-table th{background:#f7f9fc;color:#64748b;text-align:left;font-size:10px;text-transform:uppercase;letter-spacing:.06em;padding:11px;border-bottom:1px solid var(--border)}
.data-table td{padding:12px 11px;border-bottom:1px solid #eef2f6;vertical-align:middle}
.data-table tr:hover td{background:#fbfdff}
.badge{display:inline-flex;padding:5px 8px;border-radius:999px;font-size:10px;font-weight:800}
.badge-success{background:#ecfdf3;color:#027a48}
.badge-muted{background:#f1f5f9;color:#64748b}
.badge-blue{background:#eef4ff;color:#3156b8}
.actions{display:flex;gap:6px;flex-wrap:wrap}
.actions a,.actions button{font-size:10px;padding:6px 8px;border-radius:7px;border:1px solid var(--border);background:#fff;cursor:pointer}
.actions .danger{color:#b42318;border-color:#ffd3d8;background:#fff8f8}
.form-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;margin-top:18px;max-width:980px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.form-group label{display:block;margin-bottom:7px;font-size:11px;font-weight:800;color:#475569}
.form-group.full{grid-column:1/-1}
.form-textarea{min-height:100px;resize:vertical}
.form-footer{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--border)}
.flash-success,.flash-error{padding:12px 14px;border-radius:10px;font-size:12px;margin:14px 0}
.flash-success{background:#ecfdf3;color:#027a48;border:1px solid #abefc6}
.flash-error{background:#fff1f2;color:#b42318;border:1px solid #ffd3d8}
.empty-state{text-align:center;padding:40px 20px;color:#94a3b8}
.avatar-sm{width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:#eef4ff;color:#3156b8;font-weight:900;font-size:12px}
.student-cell,.teacher-cell{display:flex;align-items:center;gap:10px}
.mini-kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.mini-kpi>div{background:#fff;border:1px solid var(--border);border-radius:14px;padding:15px}
.mini-kpi span{display:block;color:var(--muted);font-size:10px}
.mini-kpi strong{display:block;font-size:22px;margin-top:4px}
@media(max-width:760px){
    .form-grid{grid-template-columns:1fr}
    .form-group.full{grid-column:auto}
    .table-toolbar{align-items:stretch;flex-direction:column}
    .search-box{max-width:none;width:100%}
    .mini-kpi{grid-template-columns:1fr}
}

/* ===== STAGE 3 ATTENDANCE ===== */
.attendance-setup{display:grid;grid-template-columns:1.4fr 1fr auto;gap:12px;align-items:end}
.attendance-list{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.att-row{display:grid;grid-template-columns:minmax(220px,1.4fr) minmax(390px,2fr) 120px minmax(180px,1fr);gap:14px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:14px;padding:13px}
.att-student{display:flex;align-items:center;gap:10px}
.att-student small{display:block;color:var(--muted);margin-top:3px}
.status-options{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.status-radio{position:relative}
.status-radio input{position:absolute;opacity:0;pointer-events:none}
.status-radio label{display:block;text-align:center;border:1px solid #dfe6ef;border-radius:9px;padding:9px 5px;font-size:10px;font-weight:800;cursor:pointer;background:#f8fafc}
.status-radio input:checked + label{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 5px 14px rgba(37,99,235,.18)}
.att-time input,.att-note input{width:100%;border:1px solid #d9e1ec;border-radius:9px;padding:9px;font-size:12px}
.att-summary{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:16px}
.att-summary div{border:1px solid var(--border);background:#fff;border-radius:12px;padding:12px;text-align:center}
.att-summary span{display:block;color:var(--muted);font-size:10px}
.att-summary strong{font-size:22px;display:block;margin-top:3px}
.sticky-save{position:sticky;bottom:14px;display:flex;justify-content:flex-end;margin-top:18px;z-index:5}
.sticky-save-inner{display:flex;gap:10px;align-items:center;background:rgba(13,27,42,.96);color:#fff;padding:12px 14px;border-radius:14px;box-shadow:0 15px 35px rgba(13,27,42,.2)}
.sticky-save-inner span{font-size:11px;color:#cbd5e1}
@media(max-width:1050px){
 .att-row{grid-template-columns:1fr}
 .status-options{grid-template-columns:repeat(5,1fr)}
 .attendance-setup{grid-template-columns:1fr 1fr}
 .attendance-setup .setup-action{grid-column:1/-1}
}
@media(max-width:600px){
 .attendance-setup{grid-template-columns:1fr}
 .attendance-setup .setup-action{grid-column:auto}
 .status-options{grid-template-columns:repeat(3,1fr)}
 .att-summary{grid-template-columns:repeat(2,1fr)}
}


/* ===== STAGE 4 REPORTS ===== */
.report-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.report-tab{padding:9px 12px;border-radius:9px;border:1px solid var(--border);background:#fff;font-size:11px;font-weight:800;color:#475569}
.report-tab.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.report-filter{display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:12px;align-items:end}
.report-kpis{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:18px}
.report-kpi{background:#fff;border:1px solid var(--border);border-radius:14px;padding:15px}
.report-kpi span{display:block;color:var(--muted);font-size:10px}
.report-kpi strong{display:block;font-size:24px;margin-top:4px}
.progress-wrap{height:8px;background:#eef2f7;border-radius:999px;overflow:hidden;min-width:110px}
.progress-bar{height:100%;background:var(--blue);border-radius:999px}
.print-header{display:none}
.report-note{font-size:11px;color:#64748b;line-height:1.6}
@media(max-width:1050px){
 .report-filter{grid-template-columns:1fr 1fr}
 .report-kpis{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:650px){
 .report-filter{grid-template-columns:1fr}
 .report-kpis{grid-template-columns:repeat(2,1fr)}
}
@media print{
 body{background:#fff}
 .topbar,.sidebar,.page-actions,.report-filter,.report-tabs,.btn-primary,.btn-light,.btn-secondary,.btn-danger{display:none!important}
 .app-layout{display:block}
 .content{padding:0;max-width:none}
 .content-card{border:0;box-shadow:none;padding:0}
 .print-header{display:block;margin-bottom:20px}
 .page-heading{margin-bottom:15px}
 .data-table{min-width:0}
 .data-table th,.data-table td{font-size:10px;padding:7px}
}


/* ===== STAGE 5 PREMIUM UI V1 ===== */
:root{
    --premium-bg:#f4f7fb;
    --premium-card:#ffffff;
    --premium-line:#e7edf5;
    --premium-text:#142033;
    --premium-muted:#718096;
    --premium-primary:#2563eb;
    --premium-primary-soft:#eef4ff;
    --premium-dark:#0f1f33;
    --premium-shadow:0 16px 38px rgba(15,31,51,.07);
}
.content{background:var(--premium-bg)}
.page-heading{
    background:linear-gradient(135deg,#ffffff 0%,#f7faff 100%);
    border:1px solid var(--premium-line);
    border-radius:20px;
    padding:24px;
    box-shadow:var(--premium-shadow);
}
.page-heading h1{font-size:30px}
.page-heading .eyebrow{
    display:inline-flex;
    padding:6px 9px;
    border-radius:999px;
    background:var(--premium-primary-soft);
    color:var(--premium-primary);
    letter-spacing:.11em;
}
.content-card,.form-card,.attendance-panel,.welcome-panel{
    border-color:var(--premium-line);
    box-shadow:var(--premium-shadow);
}
.premium-kpis{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:14px;
    margin-top:18px;
}
.premium-kpi{
    position:relative;
    overflow:hidden;
    background:#fff;
    border:1px solid var(--premium-line);
    border-radius:18px;
    padding:18px;
    box-shadow:0 10px 26px rgba(15,31,51,.05);
}
.premium-kpi:after{
    content:"";
    position:absolute;
    width:80px;height:80px;border-radius:50%;
    right:-25px;top:-25px;
    background:rgba(37,99,235,.06);
}
.premium-kpi span{display:block;font-size:11px;color:var(--premium-muted)}
.premium-kpi strong{display:block;font-size:30px;margin-top:6px;letter-spacing:-.03em}
.premium-kpi small{display:block;margin-top:4px;color:#94a3b8;font-size:10px}
.table-toolbar{
    background:#f8fafd;
    border:1px solid #edf2f7;
    padding:12px;
    border-radius:14px;
}
.data-table thead th{
    background:#f7f9fc;
    border-bottom:1px solid #e7edf5;
}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table td{padding:14px 12px}
.avatar-sm{
    width:38px;height:38px;
    background:linear-gradient(135deg,#eff5ff,#dbe8ff);
    border:1px solid #dce7f5;
}
.badge{
    padding:6px 9px;
    font-size:9px;
    letter-spacing:.03em;
}
.actions a,.actions button{
    padding:7px 9px;
    border-radius:8px;
    font-weight:700;
    transition:.18s;
}
.actions a:hover,.actions button:hover{transform:translateY(-1px)}
.btn-primary,.btn-secondary,.btn-light,.btn-danger{
    border-radius:11px;
    min-height:38px;
}
.premium-empty{
    padding:52px 20px;text-align:center;
}
.premium-empty .empty-icon{
    width:56px;height:56px;border-radius:16px;
    display:flex;align-items:center;justify-content:center;
    margin:0 auto 14px;
    background:var(--premium-primary-soft);
    color:var(--premium-primary);
    font-weight:900;font-size:22px;
}
.premium-empty h3{margin:0 0 6px;font-size:16px}
.premium-empty p{margin:0;color:var(--premium-muted);font-size:12px}
.import-card{
    background:#fff;
    border:1px solid var(--premium-line);
    border-radius:18px;
    padding:22px;
    box-shadow:var(--premium-shadow);
    max-width:900px;
}
.import-drop{
    border:1.5px dashed #cbd8e8;
    border-radius:16px;
    padding:28px;
    text-align:center;
    background:#f9fbfe;
}
.import-drop input[type=file]{margin-top:12px}
.guide-box{
    background:#f8fafc;
    border:1px solid #e8eef5;
    border-radius:14px;
    padding:16px;
    font-size:12px;
    line-height:1.7;
    color:#556274;
}
.guide-box code{background:#eef2f7;padding:2px 5px;border-radius:5px}
.topbar{
    box-shadow:0 4px 14px rgba(15,31,51,.035);
}
.sidebar{
    background:linear-gradient(180deg,#0d1b2a 0%,#10233a 100%);
}
.nav-item{
    min-height:44px;
    transition:.18s;
}
.nav-item:hover:not(.disabled){background:rgba(255,255,255,.06)}
.nav-item.active{
    background:linear-gradient(135deg,rgba(59,130,246,.24),rgba(255,255,255,.08));
    border:1px solid rgba(255,255,255,.08);
}
.student-meta,.teacher-meta{line-height:1.45}
.student-meta small,.teacher-meta small{color:#8a97a8}
@media(max-width:1000px){
    .premium-kpis{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
    .premium-kpis{grid-template-columns:1fr 1fr}
    .page-heading{padding:18px}
    .page-heading h1{font-size:25px}
}