/* HELIOS — custom polish on top of MkDocs Material 9.5
   Goal: credible engineering register for NASA-center + precision-ag audiences.
   Avoid startup-marketing aesthetics. Restrained, type-driven, data-forward. */

/* ---- Hero section (used by overrides/home.html) ---- */
.helios-hero {
  background:
    radial-gradient(ellipse at 30% 0%, rgba(0, 150, 136, 0.10) 0%, transparent 55%),
    linear-gradient(135deg,
      var(--md-primary-fg-color) 0%,
      color-mix(in oklab, var(--md-primary-fg-color) 80%, black) 100%);
  color: #fff;
  padding: 5rem 1.5rem 4.5rem;
  margin: -1.5rem -1.5rem 3rem -1.5rem; /* full-bleed within the Material content frame */
  position: relative;
  overflow: hidden;
}

.helios-hero::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    radial-gradient(circle at 80% 30%, rgba(255,255,255,0.06) 0%, transparent 50%),
    radial-gradient(circle at 20% 90%, rgba(0, 188, 212, 0.08) 0%, transparent 45%);
  pointer-events: none;
}

.helios-hero__inner {
  max-width: 64rem;
  margin: 0 auto;
  position: relative;
}

.helios-hero__eyebrow {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  opacity: 0.85;
  margin: 0 0 0.5rem;
  color: var(--md-accent-fg-color);
  font-weight: 600;
}

.helios-hero h1 {
  font-size: 3.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  color: #fff;
}

.helios-hero__subtitle {
  font-size: 1.35rem;
  font-weight: 400;
  opacity: 0.92;
  margin: 0 0 2rem;
  max-width: 48rem;
  line-height: 1.45;
}

.helios-hero__lede {
  font-size: 1.05rem;
  line-height: 1.65;
  max-width: 52rem;
  margin: 0 0 1.75rem;
  opacity: 0.95;
}

.helios-hero__headline-number {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 0.4rem;
  margin: 0 0 1.5rem;
}

.helios-hero__headline-number strong {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--md-accent-fg-color);
}

.helios-hero__caveat {
  font-size: 0.82rem;
  opacity: 0.75;
  font-style: italic;
  display: block;
  margin-top: 0.4rem;
}

.helios-hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.helios-btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: 0.3rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.18s ease;
  border: 1px solid transparent;
}

.helios-btn--primary {
  background: var(--md-accent-fg-color);
  color: #0a1929 !important;
}

.helios-btn--primary:hover {
  background: color-mix(in oklab, var(--md-accent-fg-color) 88%, white);
  transform: translateY(-1px);
}

.helios-btn--secondary {
  background: transparent;
  color: #fff !important;
  border-color: rgba(255,255,255,0.45);
}

.helios-btn--secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.7);
}

/* ---- Artifact cards grid ---- */
.helios-artifacts {
  max-width: 64rem;
  margin: 0 auto 4rem;
}

.helios-artifacts h2,
.helios-section h2 {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}

.helios-artifacts__intro {
  color: var(--md-default-fg-color--light);
  margin: 0 0 1.75rem;
  font-size: 1rem;
}

.helios-artifact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
}

.helios-artifact-card {
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.5rem;
  padding: 1.4rem 1.4rem 1.2rem;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}

.helios-artifact-card:hover {
  border-color: var(--md-accent-fg-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.helios-artifact-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  font-family: var(--md-code-font, monospace);
  word-break: break-word;
}

.helios-artifact-card__desc {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--md-default-fg-color--light);
  margin: 0 0 1rem;
  flex: 1;
}

.helios-artifact-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
}

.helios-status {
  display: inline-block;
  padding: 0.18rem 0.55rem;
  border-radius: 0.2rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.helios-status--scaffolding {
  background: rgba(158, 158, 158, 0.18);
  color: #757575;
}

.helios-status--in-development {
  background: rgba(76, 175, 80, 0.18);
  color: #2e7d32;
}

.helios-status--stable {
  background: rgba(33, 150, 243, 0.18);
  color: #1565c0;
}

.helios-artifact-card__link {
  font-weight: 600;
  text-decoration: none;
}

/* ---- Stats strip ---- */
.helios-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1.5rem;
  max-width: 64rem;
  margin: 0 auto 4rem;
  padding: 2rem 1.5rem;
  background: var(--md-code-bg-color);
  border-radius: 0.5rem;
}

.helios-stat {
  text-align: center;
}

.helios-stat__number {
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--md-primary-fg-color);
  line-height: 1;
}

.helios-stat__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--md-default-fg-color--light);
  margin-top: 0.4rem;
}

/* ---- Dependency diagram section ---- */
.helios-section {
  max-width: 64rem;
  margin: 0 auto 4rem;
}

.helios-section .mermaid {
  background: var(--md-default-bg-color);
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.5rem;
  padding: 1.5rem;
  text-align: center;
}

/* ---- Dark mode adjustments ---- */
[data-md-color-scheme="slate"] .helios-hero {
  background:
    radial-gradient(ellipse at 30% 0%, rgba(0, 188, 212, 0.10) 0%, transparent 55%),
    linear-gradient(135deg,
      color-mix(in oklab, var(--md-primary-fg-color) 70%, black) 0%,
      color-mix(in oklab, var(--md-primary-fg-color) 50%, black) 100%);
}

[data-md-color-scheme="slate"] .helios-artifact-card {
  background: var(--md-code-bg-color);
}

[data-md-color-scheme="slate"] .helios-status--scaffolding {
  background: rgba(158, 158, 158, 0.24);
  color: #bdbdbd;
}

[data-md-color-scheme="slate"] .helios-status--in-development {
  background: rgba(76, 175, 80, 0.24);
  color: #81c784;
}

[data-md-color-scheme="slate"] .helios-status--stable {
  background: rgba(33, 150, 243, 0.24);
  color: #64b5f6;
}

/* ---- Print overrides — for reviewer PDF exports ---- */
@media print {
  .helios-hero {
    background: #fff;
    color: #000;
    padding: 1rem 0;
    margin: 0 0 1rem;
  }
  .helios-hero h1, .helios-hero__subtitle, .helios-hero__lede {
    color: #000 !important;
  }
  .helios-btn {
    display: none;
  }
  .helios-artifact-card {
    page-break-inside: avoid;
  }
}

/* ---- Reduce visual weight of the Material default content area ---- */
.md-content__inner > h1:first-child {
  /* the H1 from the markdown body sits below the hero — make it less prominent */
  font-size: 1.6rem;
  margin-top: 1rem;
}

/* Tighten table styling */
.md-typeset table:not([class]) {
  font-size: 0.85rem;
}

/* Better code-block contrast in dark mode */
[data-md-color-scheme="slate"] .md-typeset code {
  background: rgba(255,255,255,0.06);
}