/**
 * Sanjal Enterprises — AI Suite Styles
 * Foundation vs Application stack diagram, agent index, entry polish.
 * Loaded with layout.css + section-shared.css (tokens already in header).
 */

/* ---------------------------------------------------------
 * Breadcrumb sit above navy hero — tighten gap
 * ------------------------------------------------------- */
.breadcrumb {
  padding-block: 1.15rem 0.85rem;
}

/* ---------------------------------------------------------
 * Hero band — stronger type contrast, less empty space
 * ------------------------------------------------------- */
.hero-band {
  padding-block: 3.25rem 3.75rem;
}
.hero-band h1 {
  max-width: 22ch;
  font-size: clamp(1.85rem, 1.4rem + 1.5vw, 2.75rem);
  letter-spacing: -0.022em;
  line-height: 1.12;
  margin-block: 0.85rem 1rem;
}
.hero-band p.hero-lede {
  color: rgba(247, 248, 250, 0.78);
  font-size: 1.08rem;
  line-height: 1.65;
  font-weight: 500;
  max-width: 62ch;
  margin-bottom: 1.5rem;
}
.hero-band .eyebrow {
  color: var(--color-signal-teal, var(--color-teal));
  font-weight: 600;
}
.hero-band--light {
  padding-block: 3rem 3.25rem;
  background: #EEF1F6;
}
.hero-band--light h1 {
  color: var(--color-ink-navy, var(--color-navy));
}
.hero-band--light p.hero-lede {
  color: rgba(10, 20, 40, 0.68);
}

/* Ghost / secondary buttons on dark heroes */
.hero-band .btn--secondary {
  border-color: rgba(247, 248, 250, 0.35);
  color: #fff;
}
.hero-band .btn--secondary:hover {
  border-color: var(--color-signal-teal, var(--color-teal));
  color: var(--color-signal-teal, var(--color-teal));
}
.hero-band .btn--primary {
  background: var(--color-signal-teal, var(--color-teal));
  color: var(--btn-primary-text, #FFFFFF);
  font-weight: 700;
}

/* ---------------------------------------------------------
 * Section headers — heading/body contrast
 * ------------------------------------------------------- */
.section-header {
  margin-bottom: 2rem;
}
.section-header h2 {
  color: var(--color-ink-navy, var(--color-navy));
  font-size: clamp(1.4rem, 1.2rem + 0.8vw, 1.95rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.65rem;
}
.section-header p {
  color: rgba(10, 20, 40, 0.68);
  font-size: 1.02rem;
  line-height: 1.65;
  font-weight: 500;
  max-width: 62ch;
}
.section-header .eyebrow {
  color: var(--color-signal-teal, var(--color-teal));
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.section--alt {
  background: #EEF1F6;
}
.section--dark .section-header h2 { color: var(--color-paper-white, #F7F8FA); }
.section--dark .section-header .eyebrow {
  color: var(--color-brass-gold, var(--color-gold));
}
.section--dark .section-header p { color: rgba(247, 248, 250, 0.75); }

/* Soften huge default layout padding on these pages */
.section {
  padding-block: 3.75rem;
}
@media (min-width: 768px) {
  .section { padding-block: 4.5rem; }
}
@media (min-width: 1280px) {
  .section { padding-block: 5.25rem; }
}

/* ---------------------------------------------------------
 * Cards — hairline + homepage shadow language
 * ------------------------------------------------------- */
.card {
  background: var(--color-surface, #fff);
  border: 1px solid var(--hair, rgba(10, 20, 40, 0.12));
  border-radius: var(--radius-md, 12px);
  padding: 1.5rem 1.4rem;
  height: 100%;
  box-shadow: var(--card-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.card:hover {
  border-color: rgba(11, 148, 140, 0.35);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}
a.card.card__link,
a.card__link {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
a.card.card__link:hover,
a.card__link:hover { text-decoration: none; }
a.card.card__link:hover h3 { color: var(--color-teal-dark, #087A74); }

.card__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-brass-gold, var(--color-gold));
  margin-bottom: 0.65rem;
  display: block;
  font-weight: 600;
}
.card h3 {
  font-size: 1.08rem;
  margin-bottom: 0.5rem;
  color: var(--color-ink-navy, var(--color-navy));
  letter-spacing: -0.015em;
}
.card p {
  color: rgba(10, 20, 40, 0.66);
  margin-bottom: 0;
  font-size: 0.94rem;
  line-height: 1.58;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card--summary {
  background: #F8F9FB;
  border-style: solid;
  border-color: var(--hair, rgba(10, 20, 40, 0.12));
}
.card--summary .card__eyebrow { color: var(--color-signal-teal, var(--color-teal)); }
.card--summary p { color: rgba(10, 20, 40, 0.84); font-weight: 500; }

.capability-card p {
  color: rgba(10, 20, 40, 0.84);
  font-weight: 500;
  font-size: 0.95rem;
}

/* ---------------------------------------------------------
 * Stack diagram
 * ------------------------------------------------------- */
.stack-diagram {
  border: 1px solid rgba(247, 248, 250, 0.14);
  border-radius: var(--radius-lg, 18px);
  background: rgba(8, 13, 28, 0.55);
  padding: 1.75rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
}

.stack-diagram__layers {
  display: grid;
  gap: 1.15rem;
}

.stack-layer {
  border: 1px solid rgba(247, 248, 250, 0.12);
  border-radius: var(--radius-md, 12px);
  padding: 1.35rem 1.4rem;
  background: rgba(247, 248, 250, 0.03);
}

.stack-layer__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.stack-layer__label h3 {
  color: #F7F8FA;
  font-size: 1.05rem;
  margin: 0;
}
.stack-layer__label p {
  color: rgba(247, 248, 250, 0.62);
  font-size: 0.88rem;
  margin: 0.25rem 0 0;
}

.stack-layer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.65rem;
}

.stack-layer__grid--dense {
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
}

.stack-node {
  display: block;
  border: 1px solid rgba(247, 248, 250, 0.14);
  border-radius: var(--radius-sm, 8px);
  padding: 0.7rem 0.9rem;
  color: #F7F8FA;
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.stack-node:hover {
  border-color: var(--color-signal-teal, var(--color-teal));
  background: rgba(11, 148, 140, 0.12);
  text-decoration: none;
  color: #fff;
}

.stack-layer--application { border-color: rgba(11, 148, 140, 0.35); }
.stack-layer--application .stack-node { border-color: rgba(11, 148, 140, 0.22); }

.stack-layer--foundation { border-color: rgba(216, 177, 94, 0.35); }
.stack-layer--foundation .stack-node { border-color: rgba(216, 177, 94, 0.28); }

.stack-diagram__rail {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  border: 1px dashed rgba(247, 248, 250, 0.18);
  border-radius: var(--radius-md, 12px);
  padding: 1.25rem 0.75rem;
  color: var(--color-signal-teal, var(--color-teal));
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: center;
}

.stack-diagram__note {
  grid-column: 1 / -1;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding-top: 1.35rem;
  margin-top: 0.35rem;
  border-top: 1px solid rgba(247, 248, 250, 0.12);
  color: rgba(247, 248, 250, 0.72);
  font-size: 0.9rem;
  line-height: 1.6;
}
.stack-diagram__note strong { color: #F7F8FA; }

/* Architecture section on navy */
.section.architecture-band {
  background: #0A1428;
}
.section.architecture-band .section-header h2 { color: #F7F8FA; }
.section.architecture-band .section-header p { color: rgba(247, 248, 250, 0.75); }
.section.architecture-band .section-header .eyebrow {
  color: var(--color-brass-gold, var(--color-gold));
}

/* ---------------------------------------------------------
 * Agent groups
 * ------------------------------------------------------- */
.agent-group { margin-bottom: 3rem; }
.agent-group:last-of-type { margin-bottom: 1.5rem; }
.agent-group__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.15rem;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--hair, rgba(10, 20, 40, 0.12));
}
.agent-group__header h2,
.agent-group__header h3 {
  font-size: 1.2rem;
  margin: 0;
  color: var(--color-ink-navy, var(--color-navy));
}
.agent-group__count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(10, 20, 40, 0.55);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------------------------------------------------------
 * Layer pill on entry pages
 * ------------------------------------------------------- */
.layer-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.layer-pill__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.layer-pill--foundation { color: var(--color-brass-gold, var(--color-gold)); }
.layer-pill--application { color: var(--color-signal-teal, var(--color-teal)); }

/* ---------------------------------------------------------
 * Steps / lists / chips on entry pages
 * ------------------------------------------------------- */
.step-list { gap: 1.35rem; }
.step h3 {
  font-size: 1.05rem;
  color: var(--color-ink-navy, var(--color-navy));
  margin-bottom: 0.35rem;
}
.step p {
  color: rgba(10, 20, 40, 0.68);
  line-height: 1.6;
}

.text-list li {
  color: rgba(10, 20, 40, 0.84);
  line-height: 1.6;
}
.section--dark .text-list li { color: rgba(247, 248, 250, 0.85); }

.chip-row { margin-bottom: 0; gap: 0.65rem; }
.chip {
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--hair, rgba(10, 20, 40, 0.12));
  font-size: 0.88rem;
  font-weight: 500;
  color: rgba(10, 20, 40, 0.84);
  background: #fff;
  padding: 0.45rem 0.85rem;
}
.chip:hover {
  border-color: var(--color-signal-teal, var(--color-teal));
  color: var(--color-teal-dark, #087A74);
  text-decoration: none;
}
.hero-band--light .chip-row { margin-top: 0.5rem; }

.section--dark .chip.badge--outline-inverse,
.chip.chip--inverse {
  background: transparent;
  border-color: rgba(247, 248, 250, 0.2);
  color: #F7F8FA;
}

/* ---------------------------------------------------------
 * CTA band
 * ------------------------------------------------------- */
.cta-band {
  background: linear-gradient(135deg, #0A1428 0%, #0D1730 100%);
  border: 1px solid rgba(247, 248, 250, 0.1);
  border-radius: var(--radius-lg, 18px);
  padding: 2.25rem 2rem;
}
.cta-band h2 {
  color: #F7F8FA;
  font-size: clamp(1.3rem, 1.1rem + 0.65vw, 1.75rem);
  margin-bottom: 0.5rem;
}
.cta-band p {
  color: rgba(247, 248, 250, 0.75);
  line-height: 1.6;
}
.cta-band .btn--secondary,
.section--dark .btn--secondary {
  border-color: rgba(247, 248, 250, 0.35);
  color: #fff;
  margin-top: 0.85rem;
}
.cta-band .btn--secondary:hover,
.section--dark .btn--secondary:hover {
  border-color: var(--color-signal-teal, var(--color-teal));
  color: var(--color-signal-teal, var(--color-teal));
}

.btn--on-light {
  border: 1.5px solid var(--hair-2, rgba(10, 20, 40, 0.18));
  color: var(--color-ink-navy, var(--color-navy));
  background: #fff;
}
.btn--on-light:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  text-decoration: none;
}

.text-link {
  color: var(--color-signal-teal, var(--color-teal));
  font-weight: 600;
}
.text-link:hover { text-decoration: underline; }

.badge--teal {
  color: #087A74;
  background: rgba(11, 148, 140, 0.12);
  border-color: transparent;
  text-decoration: none;
  border-radius: var(--radius-sm, 8px);
}
.badge--teal:hover { text-decoration: none; color: #065e59; }

@media (max-width: 1023px) {
  .stack-diagram { grid-template-columns: 1fr; }
  .stack-diagram__rail {
    writing-mode: horizontal-tb;
    transform: none;
    flex-direction: row;
  }
}

/* Hover enrichment (additive) */
.card:hover {
  border-color: rgba(11, 148, 140, 0.42);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-3px);
}
.stack-node:hover {
  box-shadow: 0 6px 16px rgba(11, 148, 140, 0.16);
  border-color: rgba(11, 148, 140, 0.4);
}
.chip:hover {
  box-shadow: 0 4px 12px rgba(11, 148, 140, 0.14);
}
@media (prefers-reduced-motion: reduce) {
  .card:hover,
  .stack-node:hover {
    transform: none;
  }
}