:root {
  --bg: #f6f4fa;
  --surface: #ffffff;
  --surface-soft: #fcfbfe;
  --text: #221f2c;
  --muted: #6f6a7d;
  --border: #e7e1ef;
  --accent: #6d46b2;
  --accent-dark: #251f30;
  --accent-soft: #f1eafd;
  --shadow: 0 12px 30px rgba(37, 31, 48, 0.08);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.05), transparent 40%),
    radial-gradient(circle at bottom right, rgba(192, 132, 252, 0.04), transparent 50%),
    #f8f7fb;
}

body {
  min-height: 100vh;
}

.library-shell {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.library-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(37, 31, 48, 0.06);
  box-shadow: 0 6px 20px rgba(37, 31, 48, 0.04);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-mark {
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent-dark);
}

.brand-mark span {
  color: var(--accent);
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-link {
  text-decoration: none;
  color: var(--accent-dark);
  font-weight: 600;
}

.header-pill {
  background: var(--accent-dark);
  color: #fff;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.library-main {
  padding-bottom: 56px;
}

.context-section {
  padding-top: 18px;
}

.context-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.context-left,
.context-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.context-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.07);
  border: 1px solid rgba(139, 92, 246, 0.14);
}

.context-label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.context-value {
  color: var(--accent-dark);
  font-size: 0.94rem;
  font-weight: 700;
}

.context-link {
  text-decoration: none;
  color: var(--accent-dark);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.82);
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.context-link:hover {
  transform: translateY(-1px);
  background: rgba(139, 92, 246, 0.08);
  border-color: rgba(139, 92, 246, 0.18);
  box-shadow: 0 8px 18px rgba(37, 31, 48, 0.05);
}

.context-link.active {
  background: linear-gradient(135deg, #251f30, #6d46b2);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(109, 70, 178, 0.22);
}

.context-link.disabled {
  opacity: 0.45;
  pointer-events: none;
}

.hero-section {
  padding-top: 24px;
}

.hero-card {
  background: linear-gradient(135deg, #251f30 0%, #3a2e54 55%, #6d46b2 100%);
  color: #fff;
  border-radius: 28px;
  padding: 32px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  opacity: 0.82;
}

.hero-card h1 {
  margin: 0;
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.1;
}

.hero-subtitle {
  margin: 14px 0 0;
  max-width: 800px;
  color: rgba(255,255,255,0.88);
  font-size: 1.02rem;
  line-height: 1.6;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.stat-chip {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.12);
  color: #fff;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
}

.groups-section {
  padding-top: 28px;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-dark);
}

.section-heading p {
  margin: 8px 0 0;
  color: var(--muted);
}

.analysis-group {
  margin-bottom: 32px;
}

.group-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.group-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-dark);
}

.group-count {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.analysis-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 18px;
  transition:
    transform 0.24s ease,
    border-color 0.24s ease,
    box-shadow 0.24s ease,
    background 0.24s ease;
}

.analysis-card:hover {
  transform: translateY(-5px);
  border-color: #d8c7fb;
  box-shadow:
    0 18px 40px rgba(37, 31, 48, 0.12),
    0 0 0 1px rgba(139, 92, 246, 0.06);
  background: #fff;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.card-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.badge-type {
  background: var(--accent-soft);
  color: var(--accent);
}

.badge-featured {
  background: #ede8ff;
  color: #4a2d84;
}

.badge-secondary {
  background: #f1f0f5;
  color: #6b6478;
}

.card-confidence {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.card-title {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--accent-dark);
}

.card-subtitle {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.card-body {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-block {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
}

.info-label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.info-value {
  margin: 0;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
  font-weight: 600;
}

.empty-state {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 20px;
  padding: 30px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1100px) {
  .analysis-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }

  .context-bar {
    padding: 14px;
  }

  .context-left,
  .context-right {
    width: 100%;
  }

  .hero-card {
    padding: 24px;
  }

  .hero-card h1 {
    font-size: 1.8rem;
  }

  .library-shell {
    width: min(100% - 20px, 1240px);
  }
}

.chart-preview {
  margin: 14px 0 10px;
}

.chart-card {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 14px 12px;
}

.chart-card-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-dark);
  margin-bottom: 12px;
}

.chart-placeholder {
  background: var(--surface-soft);
  border: 1px dashed var(--border);
  border-radius: 14px;
  padding: 22px 14px;
  text-align: center;
  color: var(--muted);
  font-weight: 700;
}

.mini-bar-chart,
.mini-hist-chart {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 210px;
}

.mini-bar-item,
.mini-hist-item {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  height: 100%;
}

.mini-bar-wrap {
  width: 100%;
  height: 150px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.mini-bar {
  width: 100%;
  max-width: 72px;
  min-height: 8px;
  border-radius: 10px 10px 6px 6px;
  background: linear-gradient(180deg, #8f66dd 0%, #6d46b2 100%);
}

.mini-bar-hist {
  background: linear-gradient(180deg, #6d8fff 0%, #4c73df 100%);
}

.mini-bar-value {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent-dark);
  text-align: center;
}

.mini-bar-label {
  font-size: 0.72rem;
  color: var(--muted);
  text-align: center;
  line-height: 1.25;
  word-break: break-word;
}

.mini-line-chart,
.mini-scatter-chart {
  height: 180px;
  border-radius: 12px;
  background: #faf8fe;
  border: 1px solid var(--border);
  padding: 10px;
  color: var(--accent);
}

.mini-line-svg,
.mini-scatter-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.mini-line-label-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 10px;
}

.mini-line-label {
  flex: 1;
  min-width: 0;
  font-size: 0.72rem;
  color: var(--muted);
  text-align: center;
  word-break: break-word;
}

.mini-axis-caption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 700;
}

.key-insight {
  margin: 10px 0 0;
}