.hpc-page {
  --hpc-accent:        var(--md-primary-fg-color);
  --hpc-accent2:       #bf60db;
  --hpc-accent-light:  rgba(124, 71, 145, 0.15);
  --hpc-accent-border: rgba(124, 71, 145, 0.45);
  --hpc-surface:       var(--md-default-bg-color);
  --hpc-text:          var(--md-default-fg-color);
  --hpc-text2:         var(--md-default-fg-color);
  --hpc-text3:         color-mix(in srgb, var(--md-default-fg-color) 50%, transparent);
  --hpc-border:        rgba(124,71,145,0.25);
  --hpc-border2:       rgba(124,71,145,0.4);
  --hpc-radius:        0.5rem;
  --hpc-radius-sm:     0.3rem;
}


[data-md-color-scheme="slate"] .hpc-page {
  --hpc-accent-light:  rgba(154, 98, 187, 0.15);
  --hpc-accent-border: rgba(154, 98, 187, 0.45);
  --hpc-border:        rgba(154,98,187,0.25);
  --hpc-border2:       rgba(154,98,187,0.4);
}

.hpc-hero {
  border: solid;
  border-color: var(--md-primary-fg-color);
  border-radius: var(--hpc-radius);
  background: var(--md-default-bg-color);
  margin-bottom: 2rem;
  padding: 2.5rem 2rem 2rem;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 1s ease-out;
  opacity: 95%;
}

.hpc-hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 280px; height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--hpc-accent-light) 0%, transparent 70%);
  pointer-events: none;
}

.hpc-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--hpc-accent-light);
  border: 1px solid var(--hpc-accent-border);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 12px;
  color: var(--hpc-accent2);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hpc-hero-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--md-accent-fg-color);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.hpc-hero-definition {
  font-size: 15px;
  color: var(--hpc-text2);
  line-height: 1.85;
  margin-bottom: 1.5rem;
  background: var(--hpc-accent-light);
  border-left: 3px solid var(--hpc-accent);
  border-radius: 0 var(--hpc-radius-sm) var(--hpc-radius-sm) 0;
  padding: 1rem 1.5rem;
}


/* PILLS */
.hpc-pills {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.hpc-pill {
  background: transparent;
  border: solid;
  border-color: var(--md-primary-fg-color);
  border-radius: 10px;
  padding: 5px 16px;
  font-size: 13px;
  color: var(--md-accent-fg-color);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  user-select: none;
}

.hpc-pill:hover {
  background: var(--hpc-accent2);
  border-color: var(--hpc-accent2);
  color: white;
}

.hpc-pill.active {
  background: var(--md-primary-fg-color);
  border-color: var(--md-primary-fg-color);
  color: white;
}

.hpc-stat:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px var(--hpc-accent-light);
}

.hpc-stat::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--md-primary-fg-color), var(--hpc-accent2));
  opacity: 0;
  transition: opacity .2s;
}
.hpc-stat:hover::before { opacity: 1; }

.hpc-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.hpc-concept-card {
  background: var(--md-default-bg-color);
  border: solid;
  border-color: var(--md-primary-fg-color);
  border-radius: var(--hpc-radius);
  padding: 1.4rem;
  cursor: default;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  animation: fadeInUp 1s ease-out;
  opacity: 95%;
  text-decoration: none !important;
  color: inherit !important;
}

.hpc-concept-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px var(--hpc-accent-light);
  border-color: var(--hpc-accent2);
}

.hpc-card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: .4rem;
  color: var(--md-accent-fg-color);
}

.hpc-card-short {
  font-size: 13px;
  color: var(--md-default-fg-color);
  line-height: 1.5;
  opacity: 0.75;
}

.hpc-card-detail {
  font-size: 13px;
  color: var(--md-default-fg-color);
  line-height: 1.65;
  margin-top: .75rem;
  padding-top: .75rem;
  border-top: 1px solid var(--hpc-border);
  display: none;
  opacity: 0.8;
}

.hpc-concept-card:hover .hpc-card-detail { display: block; }

a.hpc-concept-card { display: block; }
a.hpc-concept-card .hpc-card-short {
  color: var(--md-primary-fg-color);
  opacity: 1;
}
a.hpc-concept-card:hover .hpc-card-short { color: var(--hpc-accent2); }

.hpc-info-box {
  background: var(--hpc-accent-light);
  border: solid;
  border-color: var(--hpc-accent-border);
  border-left-width: 4px;
  border-radius: var(--hpc-radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
  font-size: 14px;
  color: var(--md-default-fg-color);
  line-height: 1.8;
  animation: fadeInUp 1s ease-out;
  opacity: 95%;
}

.hpc-info-box strong { color: var(--md-accent-fg-color); font-weight: 600; }


/* MERMAID */
.hpc-mermaid-wrap {
  background: var(--md-default-bg-color);
  border-radius: var(--hpc-radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  overflow-x: auto;
  min-height: unset;
  border: solid;
  border-color: #7c4791;
}

[data-md-color-scheme="slate"] .hpc-mermaid-wrap {
  border-color: #9a62bb;
}

.hpc-mermaid-wrap .mermaid,
.hpc-mermaid-wrap svg {
  display: block;
  margin: 0 auto;
  width: 100%;
  max-width: 100%;
  min-width: unset;
  transform: none;
  transform-origin: unset;
}

.hpc-mermaid-wrap svg .node rect,
.hpc-mermaid-wrap svg .node polygon,
.hpc-mermaid-wrap svg .node circle {
  fill: #ede7f6 !important;
  stroke: #7c4791 !important;
}

.hpc-mermaid-wrap svg text,
.hpc-mermaid-wrap svg .label,
.hpc-mermaid-wrap svg .nodeLabel {
  fill: #1a1a1a !important;
  color: #1a1a1a !important;
  opacity: 1 !important;
}

.hpc-mermaid-wrap svg .edgeLabel,
.hpc-mermaid-wrap svg .edgeLabel rect {
  fill: #ffffff !important;
  color: #1a1a1a !important;
}

.hpc-mermaid-wrap svg .edgePath .path {
  stroke: #7c4791 !important;
}

.hpc-didyouknow {
  background: var(--hpc-accent-light);
  border: solid;
  border-color: var(--hpc-accent-border);
  border-radius: var(--hpc-radius);
  padding: 1.2rem 1.4rem;
  margin-bottom: 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  animation: fadeInUp 1s ease-out;
}

.hpc-didyouknow-icon { font-size: 22px; flex-shrink: 0; line-height: 1; margin-top: 2px; }

.hpc-didyouknow-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--md-primary-fg-color);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 4px;
}

.hpc-didyouknow-text { font-size: 13px; color: var(--md-default-fg-color); line-height: 1.7; }
.hpc-didyouknow-text strong { color: var(--md-accent-fg-color); font-weight: 600; }


/* REQUESTS */
.hpc-requests-intro {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--hpc-accent-light);
  border-left: 3px solid var(--hpc-accent);
  border-radius: 0 var(--hpc-radius-sm) var(--hpc-radius-sm) 0;
  padding: 1rem 1.5rem;
  font-size: 15px;
  color: var(--hpc-text2);
  line-height: 1.85;
  margin-bottom: 1.75rem;
  animation: fadeInUp 0.6s ease-out;
}

.hpc-requests-intro svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--hpc-accent2);
}

.hpc-req-card {
  background: var(--md-default-bg-color);
  border: solid;
  border-color: var(--md-primary-fg-color);
  border-radius: var(--hpc-radius);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-decoration: none !important;
  color: inherit !important;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  animation: fadeInUp 0.7s ease-out;
  opacity: 95%;
}

.hpc-req-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px var(--hpc-accent-light);
  border-color: var(--hpc-accent2);
}

.hpc-req-emoji {
  color: var(--hpc-accent2);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.hpc-req-emoji svg {
  display: block;
}

.hpc-req-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--md-accent-fg-color);
}

.hpc-req-desc {
  font-size: 13px;
  color: var(--md-default-fg-color);
  line-height: 1.6;
  opacity: 0.8;
  flex: 1;
}

.hpc-req-link {
  font-size: 12px;
  font-weight: 600;
  color: var(--md-primary-fg-color);
  margin-top: 0.6rem;
  letter-spacing: 0.02em;
}

.hpc-req-card:hover .hpc-req-link {
  color: var(--hpc-accent2);
}