.diploma-section {
  margin-top: 22px;
}

.diploma-head {
  max-width: 720px;
  margin-bottom: 26px;
}

.diploma-head h2 {
  margin-bottom: 10px;
  font-size: 34px;
}

.diploma-head p {
  color: #bfc5d8;
  line-height: 1.55;
}

.credential-browser {
  display: grid;
  grid-template-columns: minmax(300px, .42fr) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.credential-navigation {
  min-width: 0;
  padding: 14px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  background: rgba(255,255,255,.025);
}

.credential-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 5px;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 8px;
  background: rgba(3, 8, 18, .42);
}

.credential-tabs.is-single {
  grid-template-columns: 1fr;
}

.credential-tabs button {
  min-width: 0;
  min-height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 6px;
  color: #bfc6d8;
  background: transparent;
  font: inherit;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.credential-tabs button:hover,
.credential-tabs button:focus-visible {
  color: #fff;
  border-color: rgba(98, 217, 255, .26);
}

.credential-tabs button.is-active {
  color: #fff;
  border-color: rgba(101, 224, 163, .32);
  background: rgba(101, 224, 163, .1);
}

.credential-tabs button:focus-visible,
.credential-item:focus-visible,
.diploma-controls button:focus-visible {
  outline: 3px solid rgba(98, 217, 255, .62);
  outline-offset: 2px;
}

.credential-tabs button[hidden] {
  display: none;
}

.credential-tabs strong {
  flex: 0 0 auto;
  min-width: 28px;
  padding: 4px 5px;
  border-radius: 5px;
  color: #a9f1ca;
  background: rgba(101, 224, 163, .1);
  font-size: 10px;
  text-align: center;
}

.credential-groups {
  margin-top: 16px;
}

.credential-group {
  display: grid;
  gap: 13px;
}

.credential-group[hidden] {
  display: none;
}

.credential-group-head {
  padding: 0 3px;
}

.credential-group-kicker {
  display: block;
  margin-bottom: 5px;
  color: #77e4b0;
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.credential-other .credential-group-kicker {
  color: #8edfff;
}

.credential-group h3 {
  margin: 0 0 6px;
  font-size: 19px;
  line-height: 1.22;
}

.credential-group-head p {
  color: #abb4c8;
  font-size: 12px;
  line-height: 1.5;
}

.credential-list {
  max-height: 510px;
  display: grid;
  gap: 7px;
  padding: 2px 4px 2px 2px;
  overflow-y: auto;
  scrollbar-color: rgba(154, 124, 255, .4) transparent;
  scrollbar-width: thin;
}

.credential-item {
  min-width: 0;
  min-height: 68px;
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
  padding: 8px;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 7px;
  color: #fff;
  background: rgba(255,255,255,.025);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.credential-item:hover {
  border-color: rgba(98, 217, 255, .3);
  background: rgba(98, 217, 255, .055);
}

.credential-item.is-active {
  border-color: rgba(101, 224, 163, .5);
  background: rgba(101, 224, 163, .1);
  box-shadow: inset 3px 0 0 #65e0a3;
}

.credential-item img {
  width: 68px;
  height: 48px;
  border-radius: 4px;
  object-fit: cover;
  background: #fff;
}

.credential-item > span {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.credential-item strong,
.credential-item small {
  overflow-wrap: anywhere;
}

.credential-item strong {
  font-size: 13px;
  line-height: 1.28;
}

.credential-item small {
  color: #aeb6ca;
  font-size: 10px;
  line-height: 1.35;
}

.diploma-viewer {
  min-width: 0;
  position: sticky;
  top: 108px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(260px, .72fr);
  gap: 18px;
  align-items: center;
}

.diploma-preview {
  height: clamp(430px, 43vw, 560px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(122, 88, 255, .1), rgba(98, 217, 255, .035));
}

.diploma-preview img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  object-fit: contain;
  box-shadow: 0 24px 64px rgba(0,0,0,.4);
}

.diploma-info {
  min-width: 0;
  padding: 26px;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.025));
}

.diploma-info span {
  color: #9a7cff;
  font-weight: 800;
  letter-spacing: .08em;
}

.diploma-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
}

.diploma-featured-badge {
  padding: 5px 7px;
  border: 1px solid rgba(101, 224, 163, .3);
  border-radius: 5px;
  color: #a9f1ca !important;
  background: rgba(101, 224, 163, .09);
  font-size: 9px;
  text-transform: uppercase;
}

.diploma-featured-badge[hidden],
.diploma-source[hidden] {
  display: none;
}

.diploma-info h3 {
  margin: 16px 0 12px;
  font-size: 27px;
  line-height: 1.18;
}

.diploma-info p {
  margin-bottom: 24px;
  color: #bfc5d8;
  line-height: 1.6;
}

.diploma-info .diploma-source {
  margin: -12px 0 22px;
  color: #91dff8;
  font-size: 12px;
}

.diploma-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.diploma-actions .btn {
  padding: 13px 17px;
}

.diploma-controls {
  display: flex;
  gap: 7px;
}

.diploma-controls button {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 7px;
  color: #fff;
  background: rgba(255,255,255,.05);
  cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}

.diploma-controls button:hover {
  border-color: rgba(154, 124, 255, .4);
  background: rgba(130, 92, 255, .18);
}

.reference-section {
  margin-top: 22px;
}

.reference-head {
  max-width: 720px;
  margin-bottom: 26px;
}

.reference-head h2 {
  margin: 10px 0;
  font-size: 34px;
}

.reference-head p {
  color: #bfc5d8;
  line-height: 1.55;
}

.reference-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.reference-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: stretch;
  padding: 18px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255,255,255,.065), rgba(255,255,255,.025));
}

.reference-preview {
  min-height: 280px;
  display: grid;
  place-items: center;
  padding: 14px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 8px;
  background: rgba(255,255,255,.035);
}

.reference-preview img {
  width: 100%;
  max-height: 320px;
  border-radius: 6px;
  object-fit: contain;
  background: #f7f7fb;
  box-shadow: 0 22px 58px rgba(0,0,0,.35);
}

.reference-info span {
  color: #67d7ff;
  font-weight: 800;
  letter-spacing: .08em;
}

.reference-info h3 {
  margin: 14px 0 10px;
  font-size: 26px;
}

.reference-info p {
  margin-bottom: 24px;
  color: #bfc5d8;
  line-height: 1.55;
}

.reference-info {
  display: flex;
  flex-direction: column;
}

.reference-info .btn {
  width: fit-content;
  margin-top: auto;
}

.reference-empty {
  padding: 18px 0;
  color: #bfc5d8;
}

@media (max-width: 1120px) {
  .reference-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .credential-browser {
    grid-template-columns: minmax(280px, .55fr) minmax(0, 1fr);
  }

  .diploma-viewer {
    grid-template-columns: 1fr;
  }

  .diploma-preview {
    height: 440px;
  }
}

@media (max-width: 760px) {
  .diploma-head h2 {
    font-size: 28px;
  }

  .credential-browser {
    grid-template-columns: 1fr;
  }

  .credential-navigation {
    padding: 12px;
  }

  .credential-group h3 {
    font-size: 18px;
  }

  .credential-list {
    max-height: none;
    display: flex;
    gap: 8px;
    padding: 2px 2px 10px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }

  .credential-list::-webkit-scrollbar {
    display: none;
  }

  .credential-item {
    flex: 0 0 min(72vw, 270px);
    scroll-snap-align: start;
  }

  .diploma-viewer {
    position: static;
  }

  .diploma-preview {
    height: min(66vh, 430px);
  }

  .diploma-info {
    padding: 22px;
  }

  .diploma-info h3 {
    font-size: 26px;
  }

  .diploma-actions {
    align-items: stretch;
  }

  .diploma-actions .btn {
    flex: 1 1 auto;
    justify-content: center;
  }

  .reference-grid {
    grid-template-columns: 1fr;
  }

  .reference-preview {
    min-height: 220px;
  }

  .reference-head h2 {
    font-size: 28px;
  }
}

@media (max-width: 380px) {
  .credential-tabs button {
    min-height: 58px;
    flex-direction: column;
    justify-content: center;
    gap: 3px;
    padding: 6px 4px;
    text-align: center;
  }

  .credential-tabs button span {
    line-height: 1.15;
  }

  .credential-tabs strong {
    min-width: 24px;
    padding: 2px 4px;
  }
}