#dataset-explorer {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 5%, rgba(110, 231, 183, 0.18), transparent 25rem),
    radial-gradient(circle at 93% 18%, rgba(96, 165, 250, 0.16), transparent 28rem),
    #f7f9fc;
}

#dataset-explorer [hidden] {
  display: none !important;
}

#dataset-explorer::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.35;
  background-image: radial-gradient(#bcc7d6 0.7px, transparent 0.7px);
  background-size: 20px 20px;
}

.explorer-container {
  position: relative;
}

.explorer-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.75rem;
  color: #176b56;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  background: rgba(209, 250, 229, 0.8);
  border: 1px solid rgba(16, 185, 129, 0.22);
  border-radius: 999px;
}

.explorer-eyebrow::before {
  width: 0.5rem;
  height: 0.5rem;
  content: "";
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(16, 185, 129, 0.12);
}

.explorer-intro {
  max-width: 760px;
  margin-inline: auto;
  color: #586579;
  line-height: 1.7;
}

.explorer-shell {
  margin-top: 2rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(216, 224, 235, 0.9);
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(35, 49, 72, 0.12);
  backdrop-filter: blur(12px);
}

.explorer-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid #e8edf4;
}

.explorer-stat {
  position: relative;
  padding: 1.4rem 1.5rem;
}

.explorer-stat:not(:last-child)::after {
  position: absolute;
  top: 25%;
  right: 0;
  width: 1px;
  height: 50%;
  content: "";
  background: #e4eaf2;
}

.explorer-stat-value {
  display: block;
  color: #182338;
  font-size: clamp(1.55rem, 2.5vw, 2.05rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.explorer-stat-label {
  display: block;
  margin-top: 0.4rem;
  color: #718096;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.explorer-body {
  padding: clamp(1rem, 3vw, 2rem);
}

.explorer-tabs {
  display: flex;
  width: fit-content;
  margin: 0 auto 1.75rem;
  padding: 0.3rem;
  background: #f0f3f8;
  border: 1px solid #e1e7f0;
  border-radius: 14px;
}

.explorer-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.72rem 1.15rem;
  color: #657186;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  background: transparent;
  border: 0;
  border-radius: 10px;
  transition: color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.explorer-tab:hover {
  color: #26344d;
}

.explorer-tab.is-active {
  color: #15233a;
  background: #fff;
  box-shadow: 0 3px 12px rgba(32, 48, 74, 0.1);
}

.explorer-tab:focus-visible,
.distribution-row:focus-visible,
.sample-action:focus-visible,
.sample-select:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.3);
  outline-offset: 2px;
}

.explorer-panel[hidden] {
  display: none;
}

.explorer-panel.is-entering {
  animation: explorer-fade 260ms ease both;
}

.explorer-overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 1rem;
}

.viz-card {
  height: 100%;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  background: #fff;
  border: 1px solid #e7ebf2;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(44, 61, 89, 0.06);
}

.viz-card-title {
  margin-bottom: 0.25rem;
  color: #1d2a40;
  font-size: 1rem;
  font-weight: 800;
}

.viz-card-subtitle {
  margin-bottom: 1.25rem;
  color: #7b879a;
  font-size: 0.78rem;
  line-height: 1.5;
}

.distribution-list {
  display: grid;
  gap: 0.7rem;
}

.distribution-row {
  display: grid;
  grid-template-columns: 7.5rem minmax(80px, 1fr) 2.5rem;
  gap: 0.75rem;
  align-items: center;
  width: 100%;
  padding: 0.18rem 0.25rem;
  font: inherit;
  cursor: pointer;
  background: transparent;
  border: 0;
  border-radius: 8px;
}

.distribution-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #46546a;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: left;
  text-transform: capitalize;
}

.distribution-dot {
  flex: 0 0 auto;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--type-color);
  border-radius: 3px;
}

.distribution-track {
  height: 0.62rem;
  overflow: hidden;
  background: #edf1f6;
  border-radius: 999px;
}

.distribution-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, color-mix(in srgb, var(--type-color), white 18%), var(--type-color));
  border-radius: inherit;
  transition: width 750ms cubic-bezier(0.22, 1, 0.36, 1), filter 180ms ease;
}

.distribution-row:hover .distribution-fill {
  filter: saturate(1.25) brightness(0.96);
}

.distribution-row:hover .distribution-label {
  color: #15233a;
}

.distribution-count {
  color: #627086;
  font-size: 0.78rem;
  font-weight: 800;
  text-align: right;
}

.source-layout {
  display: grid;
  grid-template-columns: minmax(130px, 0.9fr) minmax(120px, 1.1fr);
  gap: 1.35rem;
  align-items: center;
  min-height: 190px;
}

.source-donut {
  display: grid;
  width: min(160px, 100%);
  aspect-ratio: 1;
  margin: auto;
  place-items: center;
  background: conic-gradient(
    #4f7cff 0 var(--conversation-end, 27%),
    #20b486 var(--conversation-end, 27%) var(--email-end, 54%),
    #f3a93b var(--email-end, 54%) 100%
  );
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.04), 0 10px 28px rgba(37, 52, 78, 0.13);
}

.source-donut-center {
  display: grid;
  width: 64%;
  aspect-ratio: 1;
  color: #1c2940;
  text-align: center;
  background: #fff;
  border-radius: 50%;
  place-content: center;
  box-shadow: 0 0 0 1px rgba(218, 225, 235, 0.9);
}

.source-total {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.source-total-label {
  color: #8792a3;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.source-legend {
  display: grid;
  gap: 0.8rem;
}

.source-legend-item {
  display: grid;
  grid-template-columns: 0.65rem 1fr auto;
  gap: 0.55rem;
  align-items: center;
}

.source-legend-swatch {
  width: 0.65rem;
  height: 0.65rem;
  background: var(--source-color);
  border-radius: 50%;
}

.source-legend-label {
  color: #5d697c;
  font-size: 0.75rem;
  font-weight: 650;
}

.source-legend-value {
  color: #202c41;
  font-size: 0.78rem;
  font-weight: 800;
}

.characteristics-card {
  grid-column: 1 / -1;
}

.characteristic-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.characteristic-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.7rem;
  color: #4b5970;
  font-size: 0.72rem;
  font-weight: 700;
  background: #f7f9fc;
  border: 1px solid #e5eaf2;
  border-radius: 9px;
}

.characteristic-chip span {
  color: #0d7a60;
  font-weight: 800;
}

.sample-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: end;
  margin-bottom: 1rem;
  padding: 1rem;
  background: #f7f9fc;
  border: 1px solid #e6ebf2;
  border-radius: 16px;
}

.sample-control {
  flex: 1 1 200px;
}

.sample-control label {
  display: block;
  margin-bottom: 0.35rem;
  color: #68758a;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sample-select {
  width: 100%;
  height: 2.65rem;
  padding: 0 2.25rem 0 0.8rem;
  color: #27354c;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 650;
  cursor: pointer;
  background: #fff;
  border: 1px solid #dce3ed;
  border-radius: 10px;
}

.sample-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.65rem;
  padding: 0.65rem 0.9rem;
  color: #34425a;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 750;
  cursor: pointer;
  background: #fff;
  border: 1px solid #dce3ed;
  border-radius: 10px;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.sample-action:hover:not(:disabled) {
  border-color: #9eacc0;
  box-shadow: 0 5px 14px rgba(38, 54, 80, 0.09);
  transform: translateY(-1px);
}

.sample-action:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.sample-card {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  background: linear-gradient(145deg, #fff, #fbfcfe);
  border: 1px solid #e1e7f0;
  border-radius: 20px;
  box-shadow: 0 12px 35px rgba(38, 53, 78, 0.08);
}

.sample-card::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  content: "";
  background: var(--sample-color, #4f7cff);
}

.sample-card-inner {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.sample-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1.3rem;
}

.sample-type,
.sample-persona,
.sample-date {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.3rem 0.6rem;
  color: #536176;
  font-size: 0.67rem;
  font-weight: 800;
  background: #f1f4f8;
  border-radius: 999px;
}

.sample-type {
  color: var(--sample-color, #3159bb);
  text-transform: uppercase;
  background: color-mix(in srgb, var(--sample-color, #4f7cff), white 88%);
}

.sample-date {
  margin-left: auto;
  background: transparent;
}

.sample-kicker {
  margin-bottom: 0.55rem;
  color: #8b96a8;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sample-question {
  max-width: 900px;
  margin: 0;
  color: #1c2940;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 680;
  line-height: 1.58;
}

.answer-section {
  margin-top: 1.5rem;
  padding-top: 1.3rem;
  border-top: 1px solid #e8edf4;
}

.answer-content {
  margin-top: 0.8rem;
  padding: 1rem 1.1rem;
  color: #304057;
  font-size: 0.92rem;
  line-height: 1.65;
  white-space: pre-wrap;
  background: #f4fbf8;
  border: 1px solid #d9f0e8;
  border-radius: 12px;
  animation: answer-reveal 280ms ease both;
}

.sample-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.detail-label {
  display: block;
  margin-bottom: 0.45rem;
  color: #8994a5;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}

.detail-chip {
  display: inline-block;
  max-width: 100%;
  overflow-wrap: anywhere;
  padding: 0.32rem 0.5rem;
  color: #657187;
  font-size: 0.67rem;
  font-weight: 650;
  background: #f1f4f8;
  border-radius: 6px;
}

.sample-footer {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
}

.sample-counter {
  min-width: 7rem;
  color: #748197;
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
}

.sample-progress {
  flex: 1;
  height: 4px;
  overflow: hidden;
  background: #e8edf3;
  border-radius: 99px;
}

.sample-progress-fill {
  width: 0;
  height: 100%;
  background: #5a75d6;
  border-radius: inherit;
  transition: width 260ms ease;
}

.explorer-status {
  display: grid;
  min-height: 300px;
  color: #6e7b90;
  font-size: 0.9rem;
  place-items: center;
  text-align: center;
}

.explorer-spinner {
  width: 2rem;
  height: 2rem;
  margin: 0 auto 0.8rem;
  border: 3px solid #dce4ee;
  border-top-color: #4f7cff;
  border-radius: 50%;
  animation: explorer-spin 800ms linear infinite;
}

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

@keyframes explorer-fade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes answer-reveal {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .explorer-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .explorer-stat:nth-child(2)::after {
    display: none;
  }

  .explorer-stat:nth-child(-n + 2) {
    border-bottom: 1px solid #e8edf4;
  }

  .explorer-overview-grid {
    grid-template-columns: 1fr;
  }

  .characteristics-card {
    grid-column: auto;
  }

  .distribution-row {
    grid-template-columns: 6.8rem minmax(60px, 1fr) 2.2rem;
    gap: 0.45rem;
  }

  .source-layout {
    grid-template-columns: minmax(120px, 0.8fr) 1fr;
  }

  .sample-details {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .explorer-shell {
    border-radius: 18px;
  }

  .explorer-stat {
    padding: 1rem;
  }

  .explorer-tabs {
    width: 100%;
  }

  .explorer-tab {
    flex: 1;
    justify-content: center;
    padding-inline: 0.6rem;
  }

  .distribution-row {
    grid-template-columns: 6.4rem minmax(50px, 1fr) 2.1rem;
  }

  .source-layout {
    grid-template-columns: 1fr;
  }

  .source-donut {
    width: 145px;
  }

  .sample-action-label {
    display: none;
  }

  .sample-date {
    width: 100%;
    margin-left: 0;
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .explorer-panel.is-entering,
  .answer-content,
  .explorer-spinner {
    animation: none;
  }

  .distribution-fill,
  .sample-progress-fill,
  .sample-action,
  .explorer-tab {
    transition: none;
  }
}