:root{--green:#26734d;--green-dark:#18583a;--bg:#f3f7f4;--ink:#20332a;--muted:#718078;--line:#e2eae4;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card,.result-card,.panel{background:var(--white);border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 35px rgba(31,69,48,.07)}.login-card{width:min(100%,440px);padding:32px}.brand{text-align:center;margin-bottom:26px}.school-logo{width:86px;height:86px;object-fit:contain;margin:0 auto 12px}.logo-placeholder{width:86px;height:86px;border:1px dashed #a8b9ad;border-radius:16px;display:grid;place-content:center;margin:0 auto 12px;color:var(--muted);font-size:12px;font-weight:700}.logo-placeholder.small{width:64px;height:64px}.school-name{font-size:14px;font-weight:700;color:var(--green);letter-spacing:.06em}.brand h1{font-size:22px;line-height:1.25;margin:8px 0;color:var(--green-dark)}.brand p,.muted{color:var(--muted)}label{display:block;font-weight:650;margin:16px 0 6px}input{width:100%;padding:12px 13px;border:1px solid #ccd9cf;border-radius:10px;font:inherit;background:#fff;color:var(--ink)}input:focus{outline:3px solid #d7eadf;border-color:var(--green)}.button{border:0;border-radius:10px;padding:11px 16px;font:inherit;font-weight:650;cursor:pointer}.button.primary{background:var(--green);color:#fff}.button.primary:hover{background:var(--green-dark)}.button.light{background:#edf4ef;color:var(--green-dark)}.button.full{width:100%;margin-top:22px}.login-foot{text-align:center;margin-top:22px;font-size:13px;color:var(--muted)}a{color:var(--green);font-weight:650;text-decoration:none}.alert{padding:11px 13px;border-radius:10px;margin:14px 0}.alert.error{background:#fff0ef;color:#9b3028}.alert.info{background:#edf5ff;color:#285b8f}.topbar{height:66px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(22px,calc((100% - 1100px)/2));font-weight:700}.topbar form{margin:0}.result-wrap,.admin-wrap{width:min(100% - 32px,900px);margin:34px auto}.result-card{padding:30px}.compact{margin-bottom:22px}.compact h1{font-size:24px}.rank-box{background:#edf6ef;border:1px solid #dcebe0;border-radius:14px;padding:18px;text-align:center;display:grid;gap:2px;margin:18px 0 28px}.rank-box span{font-size:12px;font-weight:750;letter-spacing:.1em;color:var(--green)}.rank-box strong{font-size:38px;color:var(--green-dark)}.rank-box small{color:var(--muted)}h2{font-size:17px;margin:26px 0 12px}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:11px 13px;border-bottom:1px solid var(--line)}th{background:#f6f9f6;font-weight:700}td:last-child{font-variant-numeric:tabular-nums}.admin-wrap h1{font-size:26px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:22px 0}.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.stat small{display:block;color:var(--muted)}.stat strong{display:block;font-size:26px;color:var(--green);margin-top:5px}.panel{padding:22px}.panel h2{margin-top:0}@media(max-width:600px){.login-card{padding:24px 20px}.result-card{padding:20px 15px}.stat-grid{grid-template-columns:1fr}.topbar{padding:0 16px}.result-wrap{margin:18px auto}.compact h1{font-size:20px}}
/* V1.1 administrator workspace */
.topbrand{color:var(--green-dark);font-size:16px}.topbrand span{font-size:10px;letter-spacing:.1em;color:var(--muted);margin-left:5px}.admin-nav{display:flex;align-items:center;gap:5px;flex:1;margin:0 22px}.admin-nav a{padding:8px 11px;border-radius:9px;font-size:13px;color:#52645a}.admin-nav a.active,.admin-nav a:hover{background:#edf5ef;color:var(--green-dark)}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.page-heading h1{margin:0}.page-heading p{margin:5px 0 0}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.form-actions{grid-column:1/-1;display:flex;gap:9px;margin-top:18px}.form-grid label,.panel form>label{margin-top:13px}.panel{margin:18px 0}.panel-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px}.panel-toolbar h2{margin:0 0 14px}.search-form{display:flex;gap:8px;width:min(100%,360px)}.search-form input{min-width:0}.button.small{padding:7px 10px;font-size:12px}.button.danger{background:#fff0ef;color:#9b3028}.action-row{display:flex;gap:6px;align-items:center}.action-row form{margin:0}.empty{text-align:center;color:var(--muted);padding:24px}.pagination{display:flex;gap:6px;margin-top:16px;flex-wrap:wrap}.pagination a{padding:6px 10px;border:1px solid var(--line);border-radius:8px}.pagination a.current{background:var(--green);color:white;border-color:var(--green)}textarea{width:100%;padding:12px 13px;border:1px solid #ccd9cf;border-radius:10px;font:inherit;resize:vertical}.help{font-size:12px;color:var(--muted);margin:7px 0}.logo-preview{display:flex;align-items:center;gap:12px;margin:10px 0}.logo-preview img{width:82px;height:82px;object-fit:contain;border:1px solid var(--line);border-radius:12px;padding:6px;background:white}.logo-preview span,.check-label{font-size:13px;color:var(--muted)}.check-label{display:flex;align-items:center;gap:8px;margin-top:12px}.check-label input{width:auto}.quick-links{display:flex;gap:9px;flex-wrap:wrap}
@media(max-width:760px){.topbar{height:auto;min-height:62px;flex-wrap:wrap;gap:8px;padding:12px 16px}.admin-nav{order:3;width:100%;margin:0;overflow-x:auto}.admin-nav a{white-space:nowrap}.page-heading,.panel-toolbar{align-items:flex-start;flex-direction:column}.form-grid{grid-template-columns:1fr}.form-actions{grid-column:auto}.search-form{width:100%}.action-row{flex-wrap:wrap}}

/* V1.2 score management */
.grade-table{min-width:900px}.grade-table th,.grade-table td{vertical-align:middle}.score-input{width:88px;padding:8px 9px;font-size:13px}.grade-table td:first-child{white-space:nowrap}.grade-table td form{margin:0}.form-actions form{margin:0}.button:disabled{opacity:.45;cursor:not-allowed}

@media(min-width:761px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:760px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* V1.5: student result presentation, print and exam period */
.result-brand{padding-bottom:8px;border-bottom:1px solid var(--line)}
.exam-period{margin:8px 0 0;font-size:13px;color:var(--muted)}
.result-actions{display:flex;justify-content:flex-end;margin:-10px 0 18px}
.result-table th{width:42%;}
.result-table td{font-weight:600}
.result-note{margin:22px 0 0;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);text-align:center}
@media(max-width:600px){.result-table th{width:46%;}.result-actions{justify-content:stretch}.result-actions .button{width:100%}}
@media print{
  @page{size:A4 portrait;margin:16mm}
  body{background:#fff!important;color:#111!important;font-size:11pt}
  .no-print,.topbar{display:none!important}
  .result-wrap{width:100%;max-width:none;margin:0;padding:0}
  .result-card{border:0;box-shadow:none;border-radius:0;padding:0}
  .result-brand{margin-bottom:18px}
  .school-logo{width:72px;height:72px}
  .brand h1{color:#18583a!important;font-size:19pt}
  .rank-box{background:#edf6ef!important;border:1px solid #cbdccf!important;print-color-adjust:exact;-webkit-print-color-adjust:exact}
  .rank-box strong{font-size:30pt}
  table{break-inside:avoid}
  tr{break-inside:avoid}
  th{background:#f1f5f2!important;print-color-adjust:exact;-webkit-print-color-adjust:exact}
  .result-note{margin-top:24px}
}


/* V1.5.2: automatically calculated subject averages and compact one-page result */
.identity-result-table,.score-summary-table,.average-summary-table{table-layout:fixed;width:100%}
.identity-result-table th{width:auto;white-space:nowrap}
.identity-result-table td{text-align:left;overflow-wrap:anywhere}
.score-summary-table th,.score-summary-table td,.average-summary-table th,.average-summary-table td{text-align:center}
.score-summary-table td,.average-summary-table td{font-size:16px;font-weight:750;color:var(--green-dark)}
.average-footnote{font-size:11px;color:var(--muted);margin:6px 0 0}
.average-admin-table{min-width:0;table-layout:fixed}
.average-admin-table th,.average-admin-table td{text-align:center;white-space:normal}
.average-admin-table td strong{font-size:20px;color:var(--green-dark)}
@media(max-width:600px){.identity-result-table th,.identity-result-table td{padding:8px 6px;font-size:12px}.score-summary-table th,.score-summary-table td,.average-summary-table th,.average-summary-table td{padding:8px 5px;font-size:12px}}
@media print{
  @page{size:A4 portrait;margin:9mm}
  html,body{width:100%;height:auto;background:#fff!important;font-size:9pt!important;line-height:1.28!important}
  .result-wrap{width:100%!important;max-width:none!important;margin:0!important;padding:0!important}
  .result-card{padding:0!important;border:0!important;border-radius:0!important;box-shadow:none!important}
  .result-brand{margin:0 0 7px!important;padding:0 0 6px!important}
  .school-logo{width:48px!important;height:48px!important;margin:0 auto 4px!important}
  .logo-placeholder.small{width:42px!important;height:42px!important;margin:0 auto 4px!important}
  .school-name{font-size:9pt!important}
  .brand h1{font-size:15pt!important;margin:3px 0!important}
  .exam-period{font-size:8pt!important;margin:2px 0!important}
  .rank-box{margin:7px 0 10px!important;padding:7px!important;gap:0!important}
  .rank-box span{font-size:8pt!important}
  .rank-box strong{font-size:22pt!important;line-height:1.1!important}
  .rank-box small{font-size:8pt!important}
  h2{font-size:10pt!important;margin:10px 0 4px!important}
  .table-scroll{overflow:visible!important}
  .result-table{width:100%!important;min-width:0!important;table-layout:fixed!important;font-size:8.5pt!important}
  .result-table th,.result-table td{padding:5px 6px!important;font-size:8.5pt!important;overflow-wrap:anywhere}
  .identity-result-table th{width:10%!important}
  .identity-result-table td{width:23.3%!important}
  .score-summary-table th,.average-summary-table th{font-size:8pt!important}
  .score-summary-table td,.average-summary-table td{font-size:11pt!important}
  .average-footnote{font-size:7.5pt!important;margin-top:3px!important}
  .result-note{font-size:7.5pt!important;margin:10px 0 0!important;padding-top:5px!important}
  table,tr,thead,tbody{break-inside:avoid!important;page-break-inside:avoid!important}
  .result-card>*{break-inside:avoid!important;page-break-inside:avoid!important}
}


/* V1.5.3: restore student identity and individual scores as vertical rows;
   only the all-student subject-average table is horizontal. */
.identity-detail-table{table-layout:fixed;width:100%}
.identity-detail-table th{width:34%;white-space:normal}
.identity-detail-table td{text-align:left;overflow-wrap:anywhere}
.average-summary-table{table-layout:fixed;width:100%}
.average-summary-table th,.average-summary-table td{text-align:center}
@media(max-width:600px){.identity-detail-table th,.identity-detail-table td{padding:8px 9px;font-size:12px}}
@media print{
  .identity-detail-table th{width:34%!important}
  .identity-detail-table th,.identity-detail-table td{font-size:8.5pt!important;padding:5px 6px!important}
  .average-summary-table th,.average-summary-table td{text-align:center!important}
}


/* V1.5.4: equal-width columns for the four-subject average summary. */
.average-summary-table{width:100%;min-width:0;table-layout:fixed}
.average-summary-table col{width:25%}
.average-summary-table th,.average-summary-table td{width:25%;padding-left:8px;padding-right:8px;text-align:center;vertical-align:middle;overflow-wrap:anywhere}
@media print{.average-summary-table{width:100%!important;table-layout:fixed!important}.average-summary-table col{width:25%!important}.average-summary-table th,.average-summary-table td{width:25%!important;padding-left:4px!important;padding-right:4px!important;text-align:center!important}}

/* V1.6.1: unified period management */
.period-status{display:inline-block;padding:3px 8px;border-radius:999px;background:#edf4ef;color:#315b40;font-size:11px;font-weight:700;white-space:nowrap}
.period-status.draft{background:#f1f3f2;color:#64736a}
.period-management details{border:1px solid var(--line);border-radius:12px;padding:12px;background:#fbfdfb}
.period-management details>summary{cursor:pointer;list-style:none}
.period-management details>summary::-webkit-details-marker{display:none}
.period-management .panel{box-shadow:none}
.period-danger{background:#fff8f7;border:1px solid #f2d6d2;border-radius:12px;padding:14px;margin-top:18px}
.period-danger h3{color:#9b3028}
@media(max-width:600px){.period-management th,.period-management td{padding:8px 9px;font-size:12px}}


/* V1.6.2: student multi-period results, history and comparison */
.period-picker{background:#f7faf7;border:1px solid var(--line);border-radius:14px;padding:16px;margin:18px 0}
.period-picker label{margin:0 0 7px}
.period-picker select{width:100%;padding:12px 13px;border:1px solid #ccd9cf;border-radius:10px;background:#fff;color:var(--ink);font:inherit}
.period-picker select:focus{outline:3px solid #d7eadf;border-color:var(--green)}
.student-welcome{margin:6px 0 0;font-size:14px}
.selected-period-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:22px 0 4px}
.selected-period-heading h2{font-size:20px;margin:4px 0}
.eyebrow{font-size:10px;font-weight:800;letter-spacing:.12em;color:var(--green);text-transform:uppercase}
.history-card{margin-top:18px}
.history-card h2{margin:0 0 6px}
.history-card h3{font-size:15px;margin:24px 0 8px}
.history-heading{display:flex;justify-content:space-between;align-items:flex-start}
.history-chart{display:grid;gap:12px;margin:14px 0 22px}
.history-chart-row{display:grid;grid-template-columns:minmax(100px,170px) minmax(80px,1fr) minmax(75px,100px);gap:10px;align-items:center}
.history-chart-label{font-size:12px;color:var(--muted);overflow-wrap:anywhere}
.history-chart-track{height:14px;border-radius:99px;background:#edf2ee;overflow:hidden}
.history-chart-bar{height:100%;border-radius:99px;background:var(--green)}
.history-chart-bar.incomplete{background:#cbd5ce}
.history-chart-row strong{text-align:right;font-size:12px;font-variant-numeric:tabular-nums}
.history-comparison-table{min-width:620px}
.history-comparison-table th,.history-comparison-table td{text-align:center;font-size:12px;padding:9px 10px}
.history-comparison-table th:first-child,.history-comparison-table td:first-child{text-align:left;min-width:150px}
.history-comparison-table td:first-child small{display:block;font-size:10px}
.current-period-row{background:#f0f7f1}
@media(max-width:600px){
 .selected-period-heading{align-items:flex-start}
 .selected-period-heading h2{font-size:17px}
 .history-chart-row{grid-template-columns:minmax(85px,115px) minmax(45px,1fr) minmax(65px,82px);gap:7px}
 .history-chart-label,.history-chart-row strong{font-size:10px}
 .history-chart-track{height:12px}
}
@media print{
 .history-card,.period-picker,.selected-period-heading .period-status{display:none!important}
 .result-card{margin:0 0 0!important}
}


/* V1.6.3: admin analytics, reports and print-ready PDF */
.analysis-period-banner{display:flex;justify-content:space-between;align-items:center;gap:14px;background:#edf6ef;border:1px solid #dcebe0;border-radius:14px;padding:16px 18px;margin:16px 0}
.analysis-period-banner h2{margin:4px 0 0;font-size:19px;color:var(--green-dark)}
.analysis-status{font-size:12px;font-weight:700;color:var(--green-dark);background:#fff;padding:6px 10px;border-radius:99px}
.analysis-stat-grid .stat strong{font-size:25px}
.analysis-two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.subject-average-list{display:grid;gap:0}
.subject-average-item{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid var(--line)}
.subject-average-item:last-child{border-bottom:0}
.subject-average-item small{display:block;color:var(--muted);font-size:11px}
.analysis-value{font-size:21px;color:var(--green-dark);font-variant-numeric:tabular-nums}
.distribution-list{display:grid;gap:13px;margin-top:15px}
.distribution-row{display:grid;grid-template-columns:65px minmax(50px,1fr) 28px;gap:10px;align-items:center;font-size:12px}
.distribution-track{height:13px;background:#edf2ee;border-radius:99px;overflow:hidden}
.distribution-track>div{height:100%;background:var(--green);border-radius:99px}
.distribution-row strong{text-align:right}
.highlight-student{padding:15px;border:1px solid var(--line);border-radius:12px;background:#fbfdfb;display:grid;gap:4px}
.highlight-student small{color:var(--muted)}
.highlight-student strong{font-size:17px;color:var(--green-dark)}
.highlight-student span{font-size:12px;color:var(--muted)}
.analysis-table{min-width:600px}
.analysis-table th,.analysis-table td{font-size:13px}
.report-summary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:18px 0}
.report-summary-grid>div{padding:12px;border:1px solid var(--line);border-radius:10px;background:#fff}
.report-summary-grid small{display:block;color:var(--muted);font-size:11px}
.report-summary-grid strong{display:block;color:var(--green-dark);font-size:20px;margin-top:3px}
.print-report-header{display:none}
.report-table{min-width:1050px}
.report-table th,.report-table td{font-size:11px;padding:7px 8px;white-space:nowrap}
.report-table th:nth-child(3),.report-table td:nth-child(3){min-width:150px;white-space:normal}
.report-table td{text-align:center}
.report-table td:nth-child(3){text-align:left}
.report-footnote{font-size:11px;color:var(--muted);margin:12px 0}
@media(max-width:760px){
 .analysis-two-col{grid-template-columns:1fr}
 .analysis-period-banner{align-items:flex-start;flex-direction:column}
 .report-summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media print{
 @page{size:A4 landscape;margin:10mm}
 body{background:#fff!important;font-size:9pt!important}
 .topbar,.no-print,.admin-nav,.quick-links{display:none!important}
 .admin-wrap{width:100%!important;max-width:none!important;margin:0!important;padding:0!important}
 .panel{box-shadow:none!important;border:0!important;padding:0!important;margin:10px 0!important}
 .print-report-header{display:block!important;text-align:center;margin:0 0 12px}
 .print-report-header h1{font-size:16pt;margin:3px 0}
 .print-report-header h2{font-size:12pt;margin:3px 0}
 .print-report-header p{font-size:9pt;margin:3px 0}
 .report-summary-grid{margin:8px 0;gap:6px}
 .report-summary-grid>div{padding:6px}
 .report-summary-grid strong{font-size:13pt}
 .report-table-scroll,.table-scroll{overflow:visible!important}
 .report-table{width:100%!important;min-width:0!important;table-layout:auto!important;font-size:7pt!important}
 .report-table th,.report-table td{font-size:7pt!important;padding:4px 4px!important;white-space:normal!important}
 .report-table tr{break-inside:avoid;page-break-inside:avoid}
 .report-footnote{font-size:7pt}
}