.certificate-main {
  min-height: calc(100vh - 180px);
}

.certificate-hero,
.verify-hero {
  min-height: calc(100vh - 80px);
  padding-block-start: calc(var(--header-height) + 72px);
  background:
    radial-gradient(circle at 86% 12%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 28%),
    radial-gradient(circle at 14% 82%, rgba(91, 147, 175, 0.1), transparent 32%),
    transparent;
}

.certificate-shell {
  width: min(calc(100% - 40px), 1080px);
}

.certificate-heading {
  max-width: 760px;
  margin-block-end: 34px;
}

.certificate-heading h1,
.verify-copy h1 {
  margin: 0;
  color: var(--color-heading);
  font-size: clamp(2.35rem, 6vw, 4.7rem);
  letter-spacing: -0.055em;
  line-height: 1.02;
}

html[lang="ar"] .certificate-heading h1,
html[lang="ar"] .verify-copy h1 {
  letter-spacing: -0.025em;
}

.certificate-heading > p:last-child,
.verify-copy > p {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.certificate-card,
.certificate-state,
.verify-form {
  position: relative;
  overflow: hidden;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow-md);
}

.certificate-card::before,
.verify-form::before {
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 4px;
  content: "";
  background: linear-gradient(90deg, var(--accent), #5b93af, var(--accent));
}

.certificate-card__top {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 22px;
  align-items: center;
  padding: 34px 36px 28px;
  border-block-end: 1px solid var(--soft-line);
}

.student-avatar {
  display: grid;
  width: 92px;
  height: 92px;
  overflow: hidden;
  place-items: center;
  color: var(--action-text);
  background: linear-gradient(145deg, var(--action-bg), color-mix(in srgb, var(--action-bg) 70%, var(--accent)));
  border: 4px solid var(--surface);
  border-radius: 24px;
  box-shadow: var(--shadow-sm);
  font-size: 1.35rem;
  font-weight: 800;
}

.student-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.certificate-person h2 {
  margin: 10px 0 0;
  color: var(--color-heading);
  font-size: clamp(1.65rem, 4vw, 2.45rem);
  line-height: 1.2;
}

.certificate-person p {
  max-width: 660px;
  margin: 10px 0 0;
  color: var(--muted);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  color: #0b6b43;
  background: #e6f7ef;
  border: 1px solid #b7e9d1;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}

.status-pill::before {
  width: 8px;
  height: 8px;
  content: "";
  background: currentColor;
  border-radius: 50%;
  box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 16%, transparent);
}

.certificate-card.is-revoked .status-pill {
  color: #9d2a20;
  background: #fff0ee;
  border-color: #f3c5bf;
}

html[data-theme="dark"] .status-pill {
  color: #9fe0bf;
  background: #17362b;
  border-color: #285a47;
}

html[data-theme="dark"] .certificate-card.is-revoked .status-pill {
  color: #f0b3aa;
  background: #331d1c;
  border-color: #66322e;
}

.certificate-seal {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-radius: 20px;
  font-size: 2rem;
}

.certificate-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 28px 36px;
  gap: 18px;
}

.certificate-facts div {
  min-width: 0;
  padding: 18px;
  background: color-mix(in srgb, var(--canvas) 78%, transparent);
  border: 1px solid var(--soft-line);
  border-radius: 18px;
}

.certificate-facts dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

html[lang="ar"] .certificate-facts dt { letter-spacing: 0; }

.certificate-facts dd {
  margin: 7px 0 0;
  overflow-wrap: anywhere;
  color: var(--color-heading);
  font-size: 1.02rem;
  font-weight: 800;
}

.certificate-alert {
  display: flex;
  gap: 14px;
  margin: 0 36px 28px;
  padding: 18px;
  color: #8e2a20;
  background: #fff2f0;
  border: 1px solid #f1c5bf;
  border-radius: 18px;
}

.certificate-demo-alert {
  display: flex;
  gap: 14px;
  margin: 0 36px 28px;
  padding: 18px;
  color: #72551a;
  background: #fff8e7;
  border: 1px solid #ead49b;
  border-radius: 18px;
}

.certificate-demo-alert i { font-size: 1.35rem; }
.certificate-demo-alert p { margin: 4px 0 0; }
.certificate-card.is-revoked .certificate-seal { color: #9d2a20; background: #fff0ee; }

.certificate-alert i { font-size: 1.35rem; }
.certificate-alert p { margin: 4px 0 0; }

html[data-theme="dark"] .certificate-alert {
  color: #f0b3aa;
  background: #331d1c;
  border-color: #66322e;
}

html[data-theme="dark"] .certificate-demo-alert {
  color: #ead59c;
  background: #332d1e;
  border-color: #675a34;
}

.pdf-panel {
  margin: 0 36px;
  padding-block-start: 28px;
  border-block-start: 1px solid var(--soft-line);
}

.pdf-panel__header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-block-end: 16px;
}

.pdf-panel__header h3 { margin: 0; color: var(--color-heading); font-size: 1.35rem; }
.pdf-file-name { color: var(--muted); font-size: 0.8rem; overflow-wrap: anywhere; }

.pdf-preview {
  width: 100%;
  height: min(72vh, 760px);
  min-height: 460px;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.pdf-fallback {
  display: grid;
  min-height: 440px;
  place-items: center;
  padding: 32px;
  color: var(--muted);
  text-align: center;
}

.pdf-fallback i { color: var(--accent-strong); font-size: 3rem; }

.certificate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 24px 36px 36px;
}

.certificate-card.is-revoked .pdf-panel,
.certificate-card.is-revoked [data-pdf-download],
.certificate-card.is-revoked [data-pdf-open],
.certificate-card.is-revoked [data-print-certificate] { display: none; }

.certificate-state {
  display: grid;
  min-height: 280px;
  padding: 42px;
  place-items: center;
  align-content: center;
  text-align: center;
}

.certificate-state[hidden],
.certificate-card[hidden],
.certificate-alert[hidden] { display: none !important; }
.certificate-demo-alert[hidden] { display: none !important; }

.certificate-state h2 { margin: 0; color: var(--color-heading); font-size: clamp(1.8rem, 5vw, 3rem); }
.certificate-state p { max-width: 620px; margin: 14px 0 24px; color: var(--muted); }
.certificate-state__icon { display: grid; width: 72px; height: 72px; margin-block-end: 24px; place-items: center; color: var(--accent-strong); background: var(--accent-soft); border-radius: 22px; font-size: 2rem; }

.certificate-spinner {
  width: 42px;
  height: 42px;
  border: 3px solid var(--line);
  border-block-start-color: var(--accent-strong);
  border-radius: 50%;
  animation: certificate-spin 800ms linear infinite;
}

@keyframes certificate-spin { to { transform: rotate(360deg); } }

.verify-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  gap: clamp(34px, 7vw, 90px);
  align-items: center;
}

.verify-points { display: grid; gap: 16px; margin: 34px 0 0; padding: 0; list-style: none; }
.verify-points li { display: flex; gap: 12px; align-items: flex-start; color: var(--color-text); font-weight: 700; }
.verify-points i { color: var(--accent-strong); font-size: 1.2rem; }

.verify-form { padding: 38px; }
.verify-form__seal { display: grid; width: 62px; height: 62px; margin-block-end: 26px; place-items: center; color: var(--accent-strong); background: var(--accent-soft); border-radius: 20px; font-size: 1.8rem; }
.verify-form h2 { margin: 0; color: var(--color-heading); font-size: 1.7rem; }
.verify-form > p { margin: 9px 0 24px; color: var(--muted); }
.verify-form label { display: block; margin-block-end: 8px; color: var(--color-heading); font-size: 0.86rem; font-weight: 800; }
.verify-input-wrap { position: relative; direction: ltr; }
.verify-input-wrap i { position: absolute; inset-block-start: 50%; inset-inline-start: 16px; transform: translateY(-50%); color: var(--accent-strong); }
.verify-input-wrap input { width: 100%; min-height: 56px; padding: 0 16px 0 46px; color: var(--color-heading); background: var(--field-bg); border: 1px solid var(--line); border-radius: 14px; font-family: var(--font-en); text-align: left; text-transform: uppercase; }
.verify-form .btn { width: 100%; margin-block-start: 18px; }
.verify-form .verify-help { margin: 16px 0 0; font-size: 0.78rem; text-align: center; }
.verify-error { margin: 10px 0 0 !important; color: var(--danger) !important; font-size: 0.84rem; font-weight: 800; }

.certificate-footer { padding-block-start: 0; }

@media (max-width: 900px) {
  .verify-grid { grid-template-columns: 1fr; }
  .verify-copy { max-width: 760px; }
}

@media (max-width: 640px) {
  .certificate-hero,
  .verify-hero { padding-block-start: calc(var(--header-height) + 44px); }
  .certificate-shell { width: min(calc(100% - 28px), 1080px); }
  .certificate-card,
  .certificate-state,
  .verify-form { border-radius: 22px; }
  .certificate-card__top { grid-template-columns: auto minmax(0, 1fr); padding: 24px 20px; }
  .certificate-seal { display: none; }
  .student-avatar { width: 72px; height: 72px; border-radius: 20px; }
  .certificate-facts { grid-template-columns: 1fr; padding: 20px; gap: 12px; }
  .certificate-alert { margin: 0 20px 20px; }
  .certificate-demo-alert { margin: 0 20px 20px; }
  .pdf-panel { margin: 0 20px; }
  .pdf-panel__header { display: block; }
  .pdf-file-name { display: block; margin-block-start: 7px; }
  .pdf-preview { min-height: 420px; height: 64vh; }
  .certificate-actions { display: grid; grid-template-columns: 1fr; padding: 20px; }
  .certificate-state { min-height: 330px; padding: 30px 22px; }
  .verify-form { padding: 28px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .certificate-spinner { animation-duration: 1.8s; }
}

@media print {
  .certificate-heading,
  .certificate-actions,
  .certificate-footer,
  .pdf-panel { display: none !important; }
  .certificate-hero { padding: 0; }
  .certificate-card { box-shadow: none; }
}