:root {
  --cert-blue: #143e91;
  --cert-cyan: #16b8d7;
  --cert-gold: #c89428;
  --cert-ink: #10233f;
  --cert-muted: #62718a;
}

body.certificate-page {
  margin: 0;
  background: #dce8f5;
  color: var(--cert-ink);
  font-family: "Georgia", "Times New Roman", serif;
}
.certificate-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 18px;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
}
.certificate-actions button, .certificate-actions a {
  border: 0;
  border-radius: 8px;
  padding: 11px 16px;
  background: var(--cert-blue);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
}
.certificate-actions .secondary { background: #ffffff; color: var(--cert-blue); border: 1px solid rgba(20,62,145,.2); }

.certificate-sheet {
  width: 297mm;
  height: 210mm;
  margin: 0 auto 24px;
  background:
    linear-gradient(135deg, rgba(22,184,215,.12), transparent 38%),
    radial-gradient(circle at 88% 12%, rgba(200,148,40,.18), transparent 24%),
    #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 28px 80px rgba(16,35,63,.22);
  padding: 16mm;
}
.certificate-sheet::before {
  content: "";
  position: absolute;
  inset: 7mm;
  border: 2mm solid transparent;
  border-image: linear-gradient(135deg, var(--cert-blue), var(--cert-cyan), var(--cert-gold), var(--cert-blue)) 1;
  pointer-events: none;
}
.certificate-sheet::after {
  content: "";
  position: absolute;
  inset: 15mm;
  background:
    linear-gradient(90deg, rgba(20,62,145,.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(20,62,145,.06) 1px, transparent 1px);
  background-size: 18mm 18mm;
  mask-image: radial-gradient(circle at center, rgba(0,0,0,.32), transparent 68%);
  pointer-events: none;
}
.certificate-inner {
  position: relative;
  z-index: 1;
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 10mm;
}
.certificate-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12mm;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
}
.cert-brand strong {
  display: block;
  font-size: 28pt;
  letter-spacing: .04em;
  color: var(--cert-blue);
}
.cert-brand span {
  display: block;
  color: var(--cert-gold);
  font-weight: 900;
  margin-top: 2mm;
}
.cert-id {
  text-align: right;
  font-size: 10pt;
  color: var(--cert-muted);
  line-height: 1.5;
}
.certificate-main {
  display: grid;
  grid-template-columns: 28mm 1fr 34mm;
  gap: 8mm;
  align-items: center;
}
.cert-avatar .asset-wrap, .cert-aivi .asset-wrap {
  width: 100%;
  aspect-ratio: 1;
}
.cert-copy { text-align: center; }
.cert-title {
  margin: 0;
  font-size: 24pt;
  color: var(--cert-blue);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.certifies {
  margin: 7mm 0 3mm;
  color: var(--cert-muted);
  font-size: 13pt;
}
.student-name {
  margin: 0;
  font-size: 42pt;
  line-height: 1.05;
  color: var(--cert-ink);
  border-bottom: 1px solid rgba(20,62,145,.28);
  padding-bottom: 3mm;
}
.cert-body {
  max-width: 178mm;
  margin: 6mm auto;
  font-size: 14pt;
  line-height: 1.55;
}
.cert-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3mm;
  margin-top: 6mm;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
}
.cert-stats div {
  border: 1px solid rgba(20,62,145,.16);
  border-radius: 8px;
  padding: 3mm;
  background: rgba(255,255,255,.7);
}
.cert-stats span {
  display: block;
  font-size: 8pt;
  color: var(--cert-muted);
  text-transform: uppercase;
  font-weight: 900;
}
.cert-stats strong { display: block; font-size: 12pt; color: var(--cert-blue); }
.cert-badges {
  display: flex;
  justify-content: center;
  gap: 3mm;
  margin-top: 6mm;
}
.cert-badge .asset-wrap { width: 14mm; aspect-ratio: 1; }
.certificate-footer {
  display: grid;
  grid-template-columns: 1fr 42mm 1fr;
  gap: 12mm;
  align-items: end;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
}
.signature-line, .stamp-space {
  border-top: 1px solid var(--cert-ink);
  padding-top: 3mm;
  text-align: center;
  min-height: 18mm;
}
.stamp-space {
  border: 1px dashed rgba(16,35,63,.42);
  border-radius: 8px;
  padding: 7mm 3mm;
  color: var(--cert-muted);
}
.school-name {
  text-align: right;
  color: var(--cert-blue);
  font-weight: 900;
}
.locked-certificate {
  max-width: 760px;
  margin: 60px auto;
  background: #fff;
  border-radius: 8px;
  padding: 28px;
  text-align: center;
  box-shadow: 0 22px 60px rgba(16,35,63,.18);
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
}

@page {
  size: A4 landscape;
  margin: 0;
}

@media print {
  html, body {
    width: 297mm;
    height: 210mm;
    background: #fff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .certificate-actions { display: none !important; }
  .certificate-sheet {
    margin: 0;
    width: 297mm;
    height: 210mm;
    box-shadow: none;
    page-break-inside: avoid;
  }
}

@media (max-width: 980px) {
  .certificate-sheet {
    width: min(100vw - 24px, 297mm);
    height: auto;
    aspect-ratio: 1.414;
    padding: 5vw;
  }
  .certificate-main { grid-template-columns: 1fr; }
  .cert-avatar, .cert-aivi { display: none; }
  .student-name { font-size: clamp(30px, 7vw, 56px); }
}