/* ==========================================================
   hero.css — Sprint 86-I1
   Refreshed hero subtitle line + three-tier block
   (Open Blueprints / Open Lab / Closed Runtime).
   Vanilla CSS, no framework, no CDN.
   Companion to /style.css (kept as the global stylesheet).
   ========================================================== */

/* ---------- Hero context strip (Banking · Healthcare · Public Sector) ---------- */

.hero-context {
  display: none;
  margin: 0.4rem 0 1.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2, #a1a1aa);
}

.hero-context.active {
  display: block;
}

/* ---------- Three-tier section ---------- */

.three-tier {
  position: relative;
  padding: 6rem 0 5rem;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(108, 99, 255, 0.10), transparent 70%),
    transparent;
}

.three-tier .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.three-tier .section-label {
  display: none;
}

.three-tier .section-label.active {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.32rem 0.85rem;
  border: 1px solid rgba(108, 99, 255, 0.35);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #c7c4ff;
  background: rgba(108, 99, 255, 0.08);
}

.three-tier .section-title {
  display: none;
  margin: 0 0 1.2rem;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-1, #f5f5f7);
}

.three-tier .section-title.active {
  display: block;
}

.three-tier .section-sub {
  display: none;
  max-width: 780px;
  margin: 0 0 3rem;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--text-2, #a1a1aa);
}

.three-tier .section-sub.active {
  display: block;
}

/* ---------- 3-column grid ---------- */

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.4rem;
}

@media (max-width: 960px) {
  .tier-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Cards ---------- */

.tier-card {
  --c: #6c63ff;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.8rem 1.6rem 1.6rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.01));
  backdrop-filter: blur(8px);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.tier-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--c) 50%, transparent);
  box-shadow:
    0 12px 36px rgba(0, 0, 0, 0.35),
    0 0 0 1px color-mix(in srgb, var(--c) 25%, transparent);
}

.tier-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(140% 100% at 0% 0%, color-mix(in srgb, var(--c) 18%, transparent), transparent 55%);
  opacity: 0.6;
  pointer-events: none;
}

.tier-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.8rem;
  position: relative;
  z-index: 1;
}

.tier-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  color: var(--c);
  background: color-mix(in srgb, var(--c) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--c) 30%, transparent);
}

.tier-license {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
  border-radius: 999px;
  color: color-mix(in srgb, var(--c) 70%, #ffffff);
  background: color-mix(in srgb, var(--c) 8%, transparent);
}

.tier-title {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0.2rem 0 0.9rem;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-1, #f5f5f7);
}

.tier-emoji {
  font-size: 1.45rem;
  line-height: 1;
}

.tier-lead {
  display: none;
  position: relative;
  z-index: 1;
  margin: 0 0 1rem;
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--text-2, #d4d4d8);
}

.tier-lead.active {
  display: block;
}

.tier-bullets {
  display: none;
  position: relative;
  z-index: 1;
  padding: 0;
  margin: 0 0 1.4rem;
  list-style: none;
}

.tier-bullets.active {
  display: block;
}

.tier-bullets li {
  position: relative;
  padding: 0.32rem 0 0.32rem 1.3rem;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--text-2, #a1a1aa);
}

.tier-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c) 18%, transparent);
}

.tier-bullets code {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.84rem;
  padding: 0.08rem 0.36rem;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.07);
  color: #e4e4e7;
}

.tier-bullets a {
  color: color-mix(in srgb, var(--c) 70%, #ffffff);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in srgb, var(--c) 50%, transparent);
}

.tier-bullets a:hover {
  border-bottom-style: solid;
}

.tier-cta {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
  padding: 0.7rem 1.1rem;
  align-self: flex-start;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--c) 45%, transparent);
  background: color-mix(in srgb, var(--c) 14%, transparent);
  font-size: 0.92rem;
  font-weight: 600;
  color: #ffffff;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.15s ease;
}

.tier-cta:hover {
  background: color-mix(in srgb, var(--c) 28%, transparent);
  transform: translateX(2px);
}

.tier-cta svg {
  transition: transform 0.15s ease;
}

.tier-cta:hover svg {
  transform: translateX(2px);
}

/* ---------- Variant accents ---------- */

.tier-card.tier-open  { --c: #22c55e; }
.tier-card.tier-lab   { --c: #eab308; }
.tier-card.tier-closed { --c: #8b5cf6; }

/* ---------- Footnote (honest positioning) ---------- */

.tier-footnote {
  display: none;
  max-width: 880px;
  margin: 1.4rem auto 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.02);
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-2, #a1a1aa);
}

.tier-footnote.active {
  display: block;
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .tier-card,
  .tier-cta,
  .tier-cta svg {
    transition: none;
  }
  .tier-card:hover {
    transform: none;
  }
}