/* ==========================================================================
   Escada — 4 tiers da AI Academy (3 light + 1 featured navy/gold)
   ========================================================================== */

.ai-escada {
  position: relative;
  padding: 6rem 0;
  font-family: var(--font-sans, "Archivo", system-ui, sans-serif);
}

.ai-escada__container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .ai-escada__container { padding: 0 2rem; }
}

/* --- Header -------------------------------------------------------------- */

.ai-escada__header {
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
}

.ai-escada__eyebrow {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-electric-500, #1F6FEB);
}

.ai-escada__headline {
  font-family: var(--font-display, "Archivo Black", system-ui, sans-serif);
  margin: 1rem 0 0;
  font-size: 2.25rem;
  line-height: 1.1;
  font-weight: 700;
  color: var(--color-navy-900, #0A1F3D);
}

@media (min-width: 640px) { .ai-escada__headline { font-size: var(--ai-headline-size, 3rem); } }

.ai-escada__subheadline {
  margin: 1rem auto 0;
  max-width: 42rem;
  font-size: 1.125rem;
  line-height: 1.6;
  color: rgba(15, 23, 42, 0.65);
}

.ai-escada__subheadline p { margin: 0; }
.ai-escada__subheadline p + p { margin-top: 0.75rem; }

/* --- Grid ---------------------------------------------------------------- */

.ai-escada__grid {
  margin-top: 4rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

@media (min-width: 768px) {
  .ai-escada__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .ai-escada__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

.ai-escada__cell {
  position: relative;
  display: flex;
}

/* --- Card (regular) ------------------------------------------------------ */

.ai-escada__card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 1.75rem;
  border-radius: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 300ms;
}

.ai-escada__card:hover {
  transform: translateY(-3px);
}

@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .ai-escada__card { background-color: rgba(255, 255, 255, 0.92) !important; }
}

/* --- Card (featured / Tier Max) ----------------------------------------- */

.ai-escada__card--featured {
  position: relative;
  overflow: hidden;
  border: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.ai-escada__card-inner {
  position: relative;
  z-index: 1;
}

.ai-escada__orb {
  position: absolute;
  top: -80px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 9999px;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

.ai-escada__featured-pill {
  position: absolute;
  top: -0.75rem;
  right: -0.5rem;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  box-shadow: 0 8px 24px rgba(201, 154, 44, 0.45);
}

.ai-escada__featured-pill svg {
  width: 0.75rem;
  height: 0.75rem;
}

/* --- Inner card pieces --------------------------------------------------- */

.ai-escada__badge {
  display: inline-flex;
  width: fit-content;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.ai-escada__badge--regular {
  background: rgba(15, 23, 42, 0.06);
  color: rgba(15, 23, 42, 0.7);
}

.ai-escada__title {
  font-family: var(--font-display, "Archivo Black", system-ui, sans-serif);
  margin: 0.75rem 0 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.ai-escada__duration {
  font-family: var(--font-mono, "JetBrains Mono", ui-monospace, monospace);
  margin: 0.25rem 0 0;
  font-size: 0.75rem;
}

.ai-escada__duration--regular {
  color: rgba(15, 23, 42, 0.55);
}

.ai-escada__hr {
  border: none;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  margin: 1.25rem 0;
}

.ai-escada__hr--dark {
  border-top-color: rgba(255, 255, 255, 0.10);
}

.ai-escada__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.55;
}

.ai-escada__desc--regular {
  color: rgba(15, 23, 42, 0.65);
}

.ai-escada__items {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: rgba(15, 23, 42, 0.7);
  line-height: 1.5;
}

.ai-escada__items--dark { color: rgba(255, 255, 255, 0.8); }

.ai-escada__check {
  display: inline-block;
  margin-right: 0.25rem;
  font-weight: 700;
}

.ai-escada__check--regular {
  color: rgba(15, 23, 42, 0.45);
}

/* --- Chevrons entre cards (desktop only) -------------------------------- */

.ai-escada__chevron {
  display: none;
  position: absolute;
  right: -0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  z-index: 10;
  color: rgba(15, 23, 42, 0.25);
  pointer-events: none;
}

@media (min-width: 1024px) {
  .ai-escada__chevron { display: block; }
}