/* Portal layout: fluid canvas + blog hub (information portal) */

:root {
  --nav-width: 18rem;
  --canvas-pad: clamp(1rem, 3vw, 2.5rem);
  /* Fluid article column: scales with viewport, caps ~1600px for very wide monitors */
  --article-fluid-max: min(calc(94vw - 2 * var(--canvas-pad)), 100rem);
}

/* Fluid canvas: no narrow centered box on hub pages */
.portal-canvas {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: var(--canvas-pad);
  padding-bottom: 3rem;
}

.portal-canvas--article .article-prose {
  width: 100%;
  max-width: var(--article-fluid-max);
  margin-inline: auto;
}

/* Sidebar portal nav */
.sidebar-brand {
  margin-bottom: 1.5rem;
}
.sidebar-brand .journal {
  display: block;
  font-size: 0.8rem;
  color: var(--sage-400);
  margin-top: 0.25rem;
}

.nav-section {
  margin-bottom: 1.25rem;
}
.nav-section-title {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold-300);
  margin-bottom: 0.5rem;
  padding-left: 0.85rem;
}

.sidebar-nav .nav-active {
  background: rgba(201, 162, 39, 0.22);
  color: var(--white);
}

.sidebar-nav .nav-child {
  font-size: 0.88rem;
  padding-left: 1.1rem;
  opacity: 0.95;
}

.sidebar-nav.nav-submenu {
  margin-left: 0.5rem;
  padding-left: 0.55rem;
  border-left: 2px solid rgba(201, 162, 39, 0.35);
}
.sidebar-nav.nav-submenu .nav-child {
  padding-left: 0.85rem;
  font-size: 0.82rem;
}

/* Top bar breadcrumb */
.portal-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.portal-topbar a { font-weight: 600; }

/* Hub hero */
.portal-hero {
  width: 100%;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  background: linear-gradient(135deg, var(--moss-900) 0%, var(--moss-800) 60%, var(--sage-600) 100%);
  color: var(--cream-100);
  border-radius: calc(var(--radius) + 0.35rem);
  margin-bottom: 2rem;
  border: 2px solid var(--gold-500);
}
.portal-hero .eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--gold-300);
  margin-bottom: 0.75rem;
}
.portal-hero h1 {
  color: var(--white);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-bottom: 0.75rem;
  text-align: left;
}
.portal-hero h1 em {
  color: var(--gold-300);
  display: block;
  font-size: 0.92em;
}
.portal-hero .hero-lead {
  color: var(--cream-100);
  max-width: 55ch;
  margin: 0 0 1.25rem;
  text-align: left;
}
.portal-hero .hero-actions {
  justify-content: flex-start;
}
.portal-hero .btn-outline {
  background: transparent;
  color: var(--gold-300);
  border-color: var(--gold-300);
}
.portal-hero .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

/* Article cards grid (fluid) */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.section-head h2 {
  margin: 0;
}
.section-head a {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 40rem) {
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 64rem) {
  .article-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--cream-100);
  border-radius: calc(var(--radius) + 0.15rem);
  overflow: hidden;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(20, 40, 32, 0.14);
}
.article-card-image {
  aspect-ratio: 16 / 9;
  background: linear-gradient(145deg, var(--sage-400), var(--moss-800));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.article-card-body {
  padding: 1.15rem 1.2rem 1.35rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card-topic {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sage-600);
  margin-bottom: 0.35rem;
}
.article-card h3 {
  font-size: 1.1rem;
  color: var(--moss-900);
  margin: 0 0 0.5rem;
  line-height: 1.3;
}
.article-card p {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
  flex: 1;
}
.article-card-meta {
  margin-top: 0.85rem;
  font-size: 0.78rem;
  color: var(--sage-600);
  font-weight: 600;
}

/* Topic chips */
.topic-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.topic-chip {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  background: var(--white);
  border: 1px solid var(--sage-400);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--moss-800);
  text-decoration: none;
}
.topic-chip:hover {
  background: var(--moss-800);
  color: var(--white);
  border-color: var(--moss-800);
}

/* Founder strip */
.founder-strip {
  display: grid;
  gap: 1.25rem;
  align-items: center;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--white);
  border-radius: calc(var(--radius) + 0.2rem);
  border: 1px solid var(--cream-100);
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
}
@media (min-width: 48rem) {
  .founder-strip {
    grid-template-columns: auto 1fr;
  }
}
.founder-strip .quote {
  margin: 0;
}

/* Article canvas uses full width minus sidebar; avoid legacy narrow main */
main.portal-canvas.portal-canvas--article {
  width: 100%;
  max-width: none;
}

@media (min-width: 64rem) {
  main:not(.portal-canvas) {
    max-width: none;
    padding: var(--canvas-pad);
  }
}