:root{--brand-blue: #1f6fb2;--brand-blue-dark: #164c7a;--brand-green: #8dc63f;--accent: #e8871e;--ink: #24303d;--ink-soft: #64707c;--ink-faint: #9aa5b1;--bg: #f2f5f8;--surface: #ffffff;--sidebar: #142b44;--sidebar-hover: #1d3a59;--border: #e3e8ee;--radius-lg: 18px;--radius-md: 12px;--radius-sm: 8px;--shadow-card: 0 1px 2px rgba(20, 43, 68, .06), 0 8px 24px rgba(20, 43, 68, .06)}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%}body{font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}button,input,textarea{font-family:inherit}.app{min-height:100vh}.sidebar{position:fixed;top:0;left:0;bottom:0;width:250px;background:var(--sidebar);color:#dce6f0;padding:16px 14px;display:flex;flex-direction:column;gap:4px;transform:translate(-100%);transition:transform .2s ease;z-index:40;box-shadow:12px 0 30px 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.certificate{width:auto;height:100%;max-width:100%}}.toolbar{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}.search-box{position:relative;flex:1;min-width:220px;max-width:340px}.search-box input{width:100%;padding:10px 12px 10px 36px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;background:#fff}.search-box input:focus{outline:none;border-color:var(--brand-blue)}.search-box svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--ink-faint)}.table-card{width:100%;max-width:100%;overflow-x:auto;overflow-y:hidden;box-sizing:border-box;-webkit-overflow-scrolling:touch}table.list{width:100%;min-width:700px;border-collapse:collapse;font-size:14px}table.list thead th{position:sticky;top:0;z-index:2;text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:#fff;font-weight:700;padding:14px 18px;border-bottom:1px solid var(--border);background:#002466}table.list tbody td{padding:14px 18px;border-bottom:1px solid var(--border);color:var(--ink);vertical-align:middle}table.list tbody tr:last-child td{border-bottom:none}table.list tbody tr:hover{background:#fafbfd}.ref-pill{display:inline-block;font-size:12px;font-weight:700;color:var(--brand-blue-dark);background:#eaf3fb;padding:3px 9px;border-radius:999px}.row-actions{display:flex;gap:8px}table.list tbody tr.deleted-certificate-row{background:#f5f5f5;opacity:.65}table.list tbody tr.deleted-certificate-row td{color:#7a7a7a;text-decoration:line-through}table.list tbody tr.deleted-certificate-row:hover{background:#eee}.deleted-ref-pill{color:#777;background:#e5e5e5}table.list tbody tr.deleted-certificate-row button{opacity:.7;text-decoration:none}table.list tbody tr.deleted-certificate-row button:disabled{cursor:not-allowed}.empty-state{padding:64px 20px;text-align:center;color:var(--ink-soft)}.empty-state svg{color:var(--ink-faint);margin-bottom:14px}.empty-state h3{margin:0 0 6px;color:var(--ink);font-size:16px}.empty-state p{margin:0;font-size:14px}.skeleton-row td{padding:16px 18px}.skeleton-bar{height:12px;border-radius:6px;background:linear-gradient(90deg,#eef1f5 25%,#e4e9ef 37%,#eef1f5 63%);background-size:400% 100%;animation:shimmer 1.4s ease infinite}@keyframes shimmer{0%{background-position:100% 0}to{background-position:0 0}}.participant-list-page{height:calc(100vh - 150px);overflow:hidden}.participant-list-page .table-card{max-height:calc(100vh - 350px);overflow-x:auto;overflow-y:auto;box-sizing:border-box;-webkit-overflow-scrolling:touch}@media (max-width: 640px){.participant-list-page{height:calc(100vh - 66px)}.participant-list-page .table-card{max-height:calc(100vh - 220px);overflow-x:auto;overflow-y:auto}.table-card{width:100%;max-width:100%}table.list{min-width:700px}}.certificate{position:relative;width:100%;max-width:640px;aspect-ratio:210 / 297;overflow:hidden;font-family:Arial,Helvetica,sans-serif;color:#5b6470;background:#fff;--text-scale: 1;--wording-scale: 1;--name-scale: 1;--user-id-scale: 1;--course-title-scale: 1;--date-scale: 1}.certificate-background{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:fill;display:block;z-index:0}.cert-refno{position:absolute;top:3.2%;right:6%;font-family:Arial,Helvetica,sans-serif;font-size:clamp(8px,calc(var(--cert-scale, 1) * 13px),16px);color:#5b6470;letter-spacing:.02em;z-index:1}.cert-inner{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;text-align:center;font-family:Arial,Helvetica,sans-serif;padding:9% 12% 8%;z-index:1}.cert-heading{font-family:Arial,Helvetica,sans-serif;font-weight:700;font-size:clamp(18px,calc(var(--cert-scale, 1) * 28px),48px);color:#5b6470;margin:calc(var(--cert-scale, 1) * 130px) 0 8%;letter-spacing:.01em}.cert-line{font-family:Arial,Helvetica,sans-serif;font-size:calc(var(--cert-scale, 1) * 16px * var(--wording-scale, 1));color:#5b6470;margin:0}.cert-name{font-family:Arial,Helvetica,sans-serif;font-weight:700;font-size:calc(var(--cert-scale, 1) * 24px * var(--text-scale, 1) * var(--name-scale, 1));color:#5b6470;margin:12% 0 5%;padding:0 4px 2.2%;word-break:break-word;min-width:55%}.cert-user-id{font-family:Arial,Helvetica,sans-serif;font-size:calc(var(--cert-scale, 1) * 18px * var(--user-id-scale, 1));color:#5b6470;margin:0 0 10%;letter-spacing:.01em}.cert-title{font-weight:700;font-family:Arial,Helvetica,sans-serif;font-size:calc(var(--cert-scale, 1) * 22px * var(--text-scale, 1) * var(--course-title-scale, 1));color:#5b6470;margin:8% 0;padding:0 6px}.cert-on{display:flex;flex-direction:row;align-items:baseline;justify-content:center;flex-wrap:nowrap;flex-shrink:0;width:max-content;max-width:none;white-space:nowrap;font-family:Arial,Helvetica,sans-serif;font-size:calc(var(--cert-scale, 1) * 18px * var(--wording-scale, 1));color:#5b6470;margin:0 0 3%;letter-spacing:.01em}.cert-on-label{display:inline;white-space:nowrap;font-family:Arial,Helvetica,sans-serif;font-weight:700;color:#5b6470}.cert-on-date{display:inline;white-space:nowrap;font-family:Arial,Helvetica,sans-serif;font-size:calc(var(--cert-scale, 1) * 18px * var(--date-scale, 1));font-weight:400;color:#5b6470;letter-spacing:.01em;margin-left:.5em}.cert-by{font-family:Arial,Helvetica,sans-serif;font-size:calc(var(--cert-scale, 1) * 18px * var(--wording-scale, 1));color:#5b6470;margin:12% 0 3%}.cert-facility{font-family:Arial,Helvetica,sans-serif;font-weight:700;font-size:calc(var(--cert-scale, 1) * 19px * var(--wording-scale, 1));color:#5b6470;margin:0 0 3%}.cert-div{font-family:Arial,Helvetica,sans-serif;font-size:calc(var(--cert-scale, 1) * 17px * var(--wording-scale, 1));color:#5b6470;margin:0}@media print{body *{visibility:hidden}.print-target,.print-target *{visibility:visible}.print-target{--cert-scale: 1.2402 !important;position:fixed;top:0;left:0;width:210mm;height:297mm;max-width:none;margin:0;overflow:hidden;box-shadow:none;font-family:Arial,Helvetica,sans-serif}.certificate-background{position:absolute;top:0;left:0;width:210mm;height:297mm;object-fit:fill;display:block}@page{size:A4 portrait;margin:0}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#141e2c8c;display:flex;align-items:center;justify-content:center;padding:24px;z-index:60}.modal{background:var(--surface);border-radius:var(--radius-lg);max-width:480px;width:100%;max-height:92vh;overflow:auto;padding:22px}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.modal-head h3{margin:0;font-size:15px}.modal-close{background:none;border:none;cursor:pointer;color:var(--ink-soft);padding:4px}.modal-actions{display:flex;gap:8px;margin-top:16px}.toast{position:fixed;bottom:24px;right:24px;background:#223349;color:#fff;padding:13px 18px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;box-shadow:0 8px 24px #0003;display:flex;align-items:center;gap:10px;transform:translateY(12px);opacity:0;pointer-events:none;transition:transform .2s ease,opacity .2s ease;z-index:100}.toast.show{transform:translateY(0);opacity:1}.toast.error{background:#7a2e24}.toast .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-green);flex-shrink:0}.toast.error .dot{background:var(--accent)}