/**
 * upgrade.css — Premium pricing & upgrade page for /billing/upgrade/
 *
 * World-class pricing page:
 *   — Hero with animated gradient mesh
 *   — Glass plan cards with staggered entrance + 3D hover lift
 *   — Monthly/annual toggle with spring-eased knob
 *   — Feature comparison table (sticky headers + sticky first column)
 *   — FAQ accordion (button-driven, smooth expand)
 *   — Enterprise band with gradient CTA
 *
 * Uses --app-* tokens from app.css. Never hardcodes hex or px font sizes.
 * All animations wrapped in prefers-reduced-motion guard.
 *
 * Used by: upgrade.njk
 */

/* ═══════════════════════════════════════════════════════════
   CONTAINERS
   ═══════════════════════════════════════════════════════════ */

.upgrade-container {
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

.upgrade-container--wide {
  max-width: 1340px;
}

.upgrade-container--narrow {
  max-width: 760px;
}

/* Screen-reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ═══════════════════════════════════════════════════════════
   HERO — Animated gradient mesh, centered content
   ═══════════════════════════════════════════════════════════ */

.upgrade-hero {
  position: relative;
  min-height: 56vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding-block: clamp(3rem, 8vh, 6rem) clamp(2rem, 4vh, 4rem);
  text-align: center;
  isolation: isolate;
}

.upgrade-hero__mesh {
  position: absolute;
  inset: -60%;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 60% at 25% 45%, color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 22%, transparent), transparent 55%),
    radial-gradient(ellipse 55% 70% at 75% 55%, color-mix(in srgb, var(--gem-tanzanite-flat, #4a2db5) 16%, transparent), transparent 55%),
    radial-gradient(ellipse 45% 50% at 50% 80%, color-mix(in srgb, var(--gem-emerald-flat, #0a6840) 12%, transparent), transparent 50%);
  filter: blur(72px) saturate(1.3);
}

@media (prefers-reduced-motion: no-preference) {
  .upgrade-hero__mesh {
    animation: upgrade-mesh-drift 22s ease-in-out infinite alternate;
  }

  @keyframes upgrade-mesh-drift {
    0% {
      translate: 0 0;
      rotate: 0deg;
    }

    33% {
      translate: 4% -3%;
      rotate: 2deg;
    }

    66% {
      translate: -3% 5%;
      rotate: -1.5deg;
    }

    100% {
      translate: 2% -2%;
      rotate: 1deg;
    }
  }
}

.upgrade-hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.upgrade-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-sapphire, oklch(55% 0.18 260deg));
  margin-block-end: var(--space-sm, 0.5rem);
}

.upgrade-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.618rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  text-wrap: balance;
  color: var(--color-on-surface, oklch(92% 0 0deg));
  margin-block-end: var(--space-sm, 0.5rem);
}

.upgrade-hero__title em {
  font-style: normal;
  background: linear-gradient(
    120deg,
    var(--color-sapphire, oklch(55% 0.18 260deg)) 0%,
    var(--gem-blue-topaz-flat, #0288d1) 45%,
    var(--color-emerald, oklch(55% 0.18 160deg)) 100%
  );
  background-clip: text;
  color: transparent;
}

.upgrade-hero__subtitle {
  font-size: clamp(0.9375rem, 2vw, 1.125rem);
  color: var(--color-on-surface-muted, oklch(65% 0 0deg));
  max-width: 560px;
  margin-inline: auto;
  margin-block-end: 0;
  text-wrap: pretty;
  line-height: 1.6;
}

/* Current tier pill */
.upgrade-hero__meta {
  margin-block-start: var(--space-md, 1rem);
}

.upgrade-hero__current {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full, 9999px);
  background: color-mix(in srgb, var(--app-surface, #2d3f6e) 60%, transparent);
  border: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 20%, transparent);
  font-size: 0.8125rem;
  color: var(--app-text-muted, #c0c8e0);
  backdrop-filter: blur(8px);
}

.upgrade-hero__current strong {
  color: var(--app-text, #ece8e0);
  font-weight: 600;
}

/* ═══════════════════════════════════════════════════════════
   PLANS SECTION
   ═══════════════════════════════════════════════════════════ */

.upgrade-plans-section {
  padding-block: clamp(2rem, 4vh, 3.5rem) clamp(1.5rem, 3vh, 3rem);
}

/* ═══════════════════════════════════════════════════════════
   BILLING INTERVAL TOGGLE
   ═══════════════════════════════════════════════════════════ */

.upgrade-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm, 0.5rem);
  margin-block-end: clamp(1.5rem, 3vw, 2.5rem);
}

.upgrade-toggle__label {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-on-surface-muted, oklch(65% 0 0deg));
  transition: color 150ms ease;
  cursor: pointer;
  user-select: none;
}

.upgrade-toggle__label--active {
  color: var(--color-on-surface, oklch(92% 0 0deg));
}

.upgrade-toggle__switch {
  position: relative;
  width: 48px;
  height: 28px;
  background: color-mix(in oklch, var(--color-border, oklch(30% 0 0deg)) 60%, transparent);
  border: 1px solid var(--glass-border, color-mix(in oklch, var(--color-border, oklch(30% 0 0deg)) 40%, transparent));
  border-radius: var(--radius-full, 9999px);
  cursor: pointer;
  transition: background 200ms ease;
  outline: none;
}

.upgrade-toggle__switch[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--color-sapphire, oklch(55% 0.18 260deg)), var(--color-emerald, oklch(55% 0.18 160deg)));
  border-color: transparent;
}

.upgrade-toggle__switch:focus-visible {
  outline: 2px solid var(--color-sapphire, oklch(55% 0.18 260deg));
  outline-offset: 2px;
}

.upgrade-toggle__knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--color-on-surface, oklch(92% 0 0deg));
  border-radius: 50%;
  box-shadow: 0 1px 3px oklch(0% 0 0deg / 25%);
  transition: translate 200ms cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}

.upgrade-toggle__switch[aria-pressed="true"] .upgrade-toggle__knob {
  translate: 20px 0;
}

.upgrade-toggle__pill {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full, 9999px);
  background: linear-gradient(
    135deg,
    color-mix(in oklch, var(--color-emerald, oklch(55% 0.18 160deg)) 15%, transparent),
    color-mix(in oklch, var(--color-sapphire, oklch(55% 0.18 260deg)) 10%, transparent)
  );
  color: var(--color-emerald, oklch(55% 0.18 160deg));
  border: 1px solid color-mix(in oklch, var(--color-emerald, oklch(55% 0.18 160deg)) 30%, transparent);
  margin-inline-start: 0.25rem;
}

/* ═══════════════════════════════════════════════════════════
   PLAN GRID
   ═══════════════════════════════════════════════════════════ */

.upgrade-plans {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
  margin-block-end: 2rem;
  align-items: stretch;
}

/* ── Loading skeleton ── */
.upgrade-plans-skeleton {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
}

@keyframes upgrade-shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

.upgrade-skeleton-card {
  flex: 1 1 260px;
  max-width: 320px;
  height: 420px;
  border-radius: var(--radius-lg, 1rem);
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--app-surface, #2d3f6e) 60%, transparent) 25%,
    color-mix(in srgb, var(--app-surface, #2d3f6e) 85%, transparent) 50%,
    color-mix(in srgb, var(--app-surface, #2d3f6e) 60%, transparent) 75%
  );
  background-size: 200% 100%;
}

.upgrade-skeleton-card--tall {
  height: 460px;
}

@media (prefers-reduced-motion: no-preference) {
  .upgrade-skeleton-card {
    animation: upgrade-shimmer 1.6s ease-in-out infinite;
  }
}

/* ═══════════════════════════════════════════════════════════
   PLAN CARD
   ═══════════════════════════════════════════════════════════ */

/* ── Card entrance animation ── */
@keyframes card-rise {
  from {
    opacity: 0;
    translate: 0 28px;
  }

  to {
    opacity: 1;
    translate: 0 0;
  }
}

.upgrade-plan {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1 1 260px;
  max-width: 320px;
  background: color-mix(in srgb, var(--app-surface, #2d3f6e) 65%, transparent);
  border: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 18%, transparent);
  border-radius: var(--radius-lg, 1rem);
  padding: 1.75rem 1.5rem 1.5rem;
  backdrop-filter: blur(16px) saturate(1.3);
  box-shadow:
    0 1px 3px color-mix(in srgb, #000 10%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 6%, transparent);
  transition:
    transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow 300ms ease,
    border-color 200ms ease;
}

@media (prefers-reduced-motion: no-preference) {
  .upgrade-plan {
    animation: card-rise 480ms cubic-bezier(0.22, 1, 0.36, 1) both;
  }

  .upgrade-plan:nth-child(1) {
    animation-delay: 0ms;
  }

  .upgrade-plan:nth-child(2) {
    animation-delay: 80ms;
  }

  .upgrade-plan:nth-child(3) {
    animation-delay: 160ms;
  }

  .upgrade-plan:nth-child(4) {
    animation-delay: 240ms;
  }

  .upgrade-plan:nth-child(5) {
    animation-delay: 320ms;
  }
}

@media (hover: hover) {
  .upgrade-plan:hover {
    transform: translateY(-7px) scale(1.01);
    box-shadow:
      0 20px 56px color-mix(in srgb, #000 28%, transparent),
      0 4px 12px color-mix(in srgb, #000 14%, transparent),
      inset 0 1px 0 color-mix(in srgb, #fff 8%, transparent);
    border-color: color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 32%, transparent);
  }
}

/* Highlighted card — the required tier */
.upgrade-plan--highlighted {
  border-color: color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 90%, transparent);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 60%, transparent),
    0 12px 48px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 22%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 10%, transparent);
  transform: scale(1.04);
  z-index: 2;
}

@media (prefers-reduced-motion: no-preference) {
  .upgrade-plan--highlighted {
    animation:
      card-rise 480ms cubic-bezier(0.22, 1, 0.36, 1) both,
      card-glow 3.5s ease-in-out 0.5s infinite;
  }

  @keyframes card-glow {
    0%,
    100% {
      box-shadow:
        0 0 0 1px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 60%, transparent),
        0 12px 48px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 22%, transparent),
        inset 0 1px 0 color-mix(in srgb, #fff 10%, transparent);
    }

    50% {
      box-shadow:
        0 0 0 1px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 80%, transparent),
        0 16px 64px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 34%, transparent),
        inset 0 1px 0 color-mix(in srgb, #fff 12%, transparent);
    }
  }
}

@media (hover: hover) {
  .upgrade-plan--highlighted:hover {
    transform: scale(1.04) translateY(-7px);
  }
}

@media (width <= 639px) {
  .upgrade-plan--highlighted {
    transform: none;
    order: -1;
  }

  @media (hover: hover) {
    .upgrade-plan--highlighted:hover {
      transform: translateY(-4px);
    }
  }
}

/* Recommended badge */
.upgrade-plan__badge {
  position: absolute;
  top: 0;
  left: 50%;
  translate: -50% -50%;
  padding: 0.25rem 1rem;
  background: linear-gradient(
    130deg,
    var(--gem-sapphire-flat, #1f3a99) 0%,
    var(--gem-blue-topaz-flat, #0288d1) 50%,
    var(--gem-emerald-flat, #0a6840) 100%
  );
  color: #f0eee8;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-full, 9999px);
  white-space: nowrap;
  box-shadow:
    0 2px 10px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 50%, transparent),
    0 0 0 1px color-mix(in srgb, #fff 15%, transparent);
}

/* Tier name */
.upgrade-plan__name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-block-end: 1rem;
  color: var(--app-text-muted, #c0c8e0);
}

/* Price block */
.upgrade-plan__price {
  display: flex;
  align-items: baseline;
  gap: 0.1rem;
  margin-block-end: 0.25rem;
  line-height: 1;
}

.upgrade-plan__currency {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--app-text, #ece8e0);
  align-self: flex-start;
  margin-block-start: 0.25rem;
}

.upgrade-plan__amount {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--app-text, #ece8e0);
  font-variant-numeric: tabular-nums;
  transition: opacity 180ms ease;
}

.upgrade-plan__period {
  font-size: 0.875rem;
  color: var(--app-text-muted, #c0c8e0);
  margin-inline-start: 0.15rem;
  align-self: flex-end;
  margin-block-end: 0.35rem;
}

.upgrade-plan__annual-note {
  font-size: 0.8125rem;
  color: var(--color-emerald, oklch(55% 0.18 160deg));
  margin-block-end: var(--space-md, 1rem);
  min-height: 1.25rem;
}

/* Description */
.upgrade-plan__desc {
  font-size: 0.875rem;
  color: var(--color-on-surface-muted, oklch(65% 0 0deg));
  line-height: 1.5;
  margin-block-end: var(--space-md, 1rem);
  text-wrap: pretty;
}

/* Divider */
.upgrade-plan__divider {
  height: 1px;
  background: var(--glass-border, color-mix(in oklch, var(--color-border, oklch(30% 0 0deg)) 40%, transparent));
  margin-block: var(--space-md, 1rem);
}

/* Feature list */
.upgrade-plan__features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-lg, 2rem) 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.upgrade-plan__feature {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--color-on-surface-muted, oklch(65% 0 0deg));
  line-height: 1.4;
}

.upgrade-plan__feature-check {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 0.125rem;
  color: var(--color-emerald, oklch(55% 0.18 160deg));
}

/* CTA button — fills bottom of card */
.upgrade-plan__cta {
  display: block;
  width: 100%;
  padding: 0.75rem var(--space-md, 1rem);
  border-radius: var(--radius-md, 0.5rem);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-align: center;
  cursor: pointer;
  border: none;
  transition:
    opacity 150ms ease,
    transform 100ms ease,
    box-shadow 200ms ease;
  margin-block-start: auto;
}

.upgrade-plan__cta:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.upgrade-plan__cta:not(:disabled):hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.upgrade-plan__cta:not(:disabled):active {
  transform: translateY(0);
}

.upgrade-plan--highlighted .upgrade-plan__cta {
  background: linear-gradient(
    130deg,
    var(--gem-sapphire-flat, #1f3a99) 0%,
    var(--gem-blue-topaz-flat, #0288d1) 55%,
    var(--gem-emerald-flat, #0a6840) 100%
  );
  color: #f0eee8;
  box-shadow:
    0 4px 18px color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 35%, transparent),
    0 0 0 1px color-mix(in srgb, #fff 12%, transparent) inset;
  border-color: transparent;
}

.upgrade-plan:not(.upgrade-plan--highlighted) .upgrade-plan__cta {
  background: color-mix(in srgb, var(--app-surface, #2d3f6e) 80%, transparent);
  color: var(--app-text, #ece8e0);
  border: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 25%, transparent);
}

/* Spinner in CTA */
.upgrade-plan__cta[data-loading="true"] {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════
   COMPARE ANCHOR LINK
   ═══════════════════════════════════════════════════════════ */

.upgrade-compare-cta {
  text-align: center;
  padding-block: 1.5rem 0.5rem;
}

.upgrade-compare-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--app-text-muted, #c0c8e0);
  text-decoration: none;
  border: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 22%, transparent);
  border-radius: var(--radius-full, 9999px);
  padding: 0.5rem 1.25rem;
  backdrop-filter: blur(8px);
  transition:
    color 200ms ease,
    border-color 200ms ease,
    background 200ms ease;
}

.upgrade-compare-link:hover {
  color: var(--app-text, #ece8e0);
  border-color: color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 40%, transparent);
  background: color-mix(in srgb, var(--app-surface, #2d3f6e) 40%, transparent);
}

.upgrade-compare-link:focus-visible {
  outline: 2px solid var(--gem-sapphire-flat, #1f3a99);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: no-preference) {
  .upgrade-compare-link__arrow {
    transition: translate 200ms ease;
  }

  .upgrade-compare-link:hover .upgrade-compare-link__arrow {
    translate: 0 3px;
  }
}

/* ═══════════════════════════════════════════════════════════
   FEATURE COMPARISON TABLE
   ═══════════════════════════════════════════════════════════ */

.features-section {
  padding-block: clamp(3rem, 6vh, 5rem);
  border-top: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 12%, transparent);
}

.features-section__header {
  text-align: center;
  margin-block-end: 2.5rem;
}

.features-section__title {
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--app-text, #ece8e0);
  margin-block-end: 0.5rem;
}

.features-section__subtitle {
  font-size: 0.9375rem;
  color: var(--app-text-muted, #c0c8e0);
}

/* ── Table scroll container ── */
.fc-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg, 1rem);
  border: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 14%, transparent);
  position: relative;

  /* Right-edge fade to indicate scroll */
  background: color-mix(in srgb, var(--app-surface, #2d3f6e) 35%, transparent);
}

.fc-wrap:focus-visible {
  outline: 2px solid var(--gem-sapphire-flat, #1f3a99);
  outline-offset: 2px;
}

/* ── Table core ── */
.fc-table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
  font-size: 0.875rem;
  table-layout: fixed;
}

/* ── Column widths ── */
.fc-col--feature {
  width: 220px;
  min-width: 200px;
}

.fc-col--tier {
  width: 120px;
  min-width: 110px;
}

/* ── Sticky first column ── */
.fc-col--feature,
.fc-feature {
  position: sticky;
  left: 0;
  z-index: 2;
  background: color-mix(in srgb, var(--app-bg, #181818) 90%, transparent);
  backdrop-filter: blur(8px);
}

/* ── Sticky header row ── */
.fc-head-row th {
  position: sticky;
  top: 0;
  z-index: 3;
  background: color-mix(in srgb, var(--app-bg, #181818) 92%, transparent);
  backdrop-filter: blur(12px);
  padding-block: 1.25rem 1rem;
  padding-inline: 0.625rem;
  text-align: center;
  border-bottom: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 16%, transparent);
}

/* Corner cell = sticky top + sticky left */
.fc-head-row .fc-col--feature {
  z-index: 4;
  text-align: left;
  padding-inline-start: 1.25rem;
}

/* ── Tier header cell ── */
.fc-tier-name {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--app-text, #ece8e0);
  margin-block-end: 0.3rem;
}

.fc-tier-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.1rem;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--app-text, #ece8e0);
  font-variant-numeric: tabular-nums;
  margin-block-end: 0.5rem;
}

.fc-tier-period {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--app-text-muted, #c0c8e0);
}

.fc-tier-badge--current {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--app-text-muted, #c0c8e0);
  border: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 30%, transparent);
  border-radius: var(--radius-full, 9999px);
  padding: 0.125rem 0.625rem;
  margin-block-start: 0.25rem;
}

/* Select / Contact CTA in header */
.fc-tier-cta {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full, 9999px);
  border: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 28%, transparent);
  background: color-mix(in srgb, var(--app-surface, #2d3f6e) 50%, transparent);
  color: var(--app-text, #ece8e0);
  text-decoration: none;
  cursor: pointer;
  transition:
    background 150ms ease,
    border-color 150ms ease;
  white-space: nowrap;
}

.fc-tier-cta:hover {
  background: color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 60%, transparent);
  border-color: color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 70%, transparent);
}

.fc-tier-cta:focus-visible {
  outline: 2px solid var(--gem-sapphire-flat, #1f3a99);
  outline-offset: 2px;
}

/* ── Column highlighting ── */
.fc-col--tier[data-compare-tier].is-current .fc-tier-name,
td[data-compare-tier].is-current {
  background: color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 6%, transparent);
}

.fc-col--tier[data-compare-tier].is-required {
  background: color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 12%, transparent);
  border-inline: 1px solid color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 35%, transparent);
}

td[data-compare-tier].is-required {
  background: color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 6%, transparent);
}

.fc-col--tier[data-compare-tier].is-current {
  background: color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 8%, transparent);
}

/* ── Feature group header row ── */
.fc-group-row {
  border-top: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 12%, transparent);
}

.fc-group-label {
  padding: 0.625rem 1.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--app-accent-text, #0288d1);
  background: color-mix(in srgb, var(--app-surface, #2d3f6e) 25%, transparent);
}

/* ── Feature name column ── */
.fc-feature {
  padding: 0.75rem 1.25rem;
  font-weight: 500;
  color: var(--app-text, #ece8e0);
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}

/* ── Data cell ── */
.fc-cell {
  padding: 0.75rem 0.625rem;
  text-align: center;
  color: var(--app-text-muted, #c0c8e0);
  border-bottom: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 8%, transparent);
  font-variant-numeric: tabular-nums;
}

.fc-row:last-child .fc-cell,
.fc-row:last-child .fc-feature {
  border-bottom: none;
}

/* ── Hover row highlight ── */
.fc-row:hover .fc-cell,
.fc-row:hover .fc-feature {
  background: color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 4%, transparent);
}

/* ── Check / Dash icons ── */
.fc-yes::after {
  content: "";
  display: inline-flex;
  width: 1.125rem;
  height: 1.125rem;
  background-color: var(--gem-emerald-flat, #0a6840);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='7' stroke='%230a6840' stroke-width='1.25' fill='none'/%3E%3Cpath d='M4.5 8l2.5 2.5 4.5-5' stroke='%230a6840' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  mask-repeat: no-repeat;
  mask-position: center;
  mask-size: contain;
}

.fc-no::after {
  content: "\2014";
  color: color-mix(in srgb, var(--app-text-muted, #c0c8e0) 35%, transparent);
  font-size: 0.9rem;
}

/* ═══════════════════════════════════════════════════════════
   FAQ ACCORDION
   ═══════════════════════════════════════════════════════════ */

.faq-section {
  padding-block: clamp(3rem, 5vh, 4.5rem);
  border-top: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 10%, transparent);
}

.faq-section__title {
  font-size: clamp(1.25rem, 2.5vw, 1.625rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--app-text, #ece8e0);
  text-align: center;
  margin-block-end: 2rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 12%, transparent);
}

.faq-item:first-child {
  border-top: 1px solid color-mix(in srgb, var(--gem-moonstone-flat, #c0c8e0) 12%, transparent);
}

.faq-item__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.125rem 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 500;
  color: var(--app-text, #ece8e0);
  transition: color 150ms ease;
}

.faq-item__trigger:hover {
  color: var(--app-text, #ece8e0);
  opacity: 0.85;
}

.faq-item__trigger:focus-visible {
  outline: 2px solid var(--gem-sapphire-flat, #1f3a99);
  outline-offset: 2px;
  border-radius: 3px;
}

.faq-item__icon {
  flex-shrink: 0;
  color: var(--app-text-muted, #c0c8e0);
  transition: rotate 250ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.faq-item__trigger[aria-expanded="true"] .faq-item__icon {
  rotate: 180deg;
}

.faq-item__answer {
  overflow: hidden;
  margin: 0;
}

.faq-item__answer[hidden] {
  display: none;
}

.faq-item__answer p {
  padding-block-end: 1.25rem;
  font-size: 0.9375rem;
  color: var(--app-text-muted, #c0c8e0);
  line-height: 1.65;
  max-width: 60ch;
}

/* ═══════════════════════════════════════════════════════════
   ENTERPRISE BAND
   ═══════════════════════════════════════════════════════════ */

.upgrade-enterprise-band {
  margin-block: clamp(2rem, 4vh, 4rem);
  padding-block: clamp(2.5rem, 5vh, 4rem);
  background: color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 14%, var(--app-bg, #181818));
  border-block: 1px solid color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 25%, transparent);
  position: relative;
  overflow: hidden;
}

/* Subtle gradient background for enterprise band */
.upgrade-enterprise-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 80% 100% at 80% 50%,
    color-mix(in srgb, var(--gem-tanzanite-flat, #4a2db5) 18%, transparent),
    transparent 60%
  );
  pointer-events: none;
}

.upgrade-enterprise-band__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.upgrade-enterprise-band__copy {
  flex: 1 1 320px;
}

.upgrade-enterprise-band__title {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--app-text, #ece8e0);
  text-wrap: balance;
  margin-block-end: 0.625rem;
}

.upgrade-enterprise-band__desc {
  font-size: 0.9375rem;
  color: var(--app-text-muted, #c0c8e0);
  line-height: 1.6;
  text-wrap: pretty;
}

.upgrade-enterprise-band__action {
  flex-shrink: 0;
}

.btn-enterprise {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md, 0.5rem);
  font-size: 0.9375rem;
  font-weight: 600;
  background: var(--app-text, #ece8e0);
  color: color-mix(in srgb, var(--gem-sapphire-flat, #1f3a99) 90%, #000);
  text-decoration: none;
  transition:
    opacity 150ms ease,
    transform 150ms ease;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.btn-enterprise:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-enterprise:focus-visible {
  outline: 2px solid var(--app-text, #ece8e0);
  outline-offset: 3px;
}

/* ═══════════════════════════════════════════════════════════
   BACK LINK + FOOTER NOTE
   ═══════════════════════════════════════════════════════════ */

.upgrade-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  text-align: center;
  padding-block-end: var(--space-xl, 4rem);
}

.upgrade-footer__back {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--app-text-muted, #c0c8e0);
  text-decoration: none;
  transition: color 150ms ease;
}

.upgrade-footer__back:hover {
  color: var(--app-text, #ece8e0);
}

.upgrade-footer__note {
  font-size: 0.8125rem;
  color: color-mix(in srgb, var(--app-text-muted, #c0c8e0) 65%, transparent);
}

/* ═══════════════════════════════════════════════════════════
   GATE / AUTH STATES
   ═══════════════════════════════════════════════════════════ */

.upgrade-auth-gate {
  text-align: center;
  padding: var(--space-2xl, 8rem) var(--space-lg, 2rem);
  min-height: 60vh;
  display: grid;
  place-items: center;
}

/* ═══════════════════════════════════════════════════════════
   TOAST
   ═══════════════════════════════════════════════════════════ */

.upgrade-toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.upgrade-toast {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md, 0.5rem);
  font-size: 0.9375rem;
  font-weight: 500;
  pointer-events: auto;
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 16px color-mix(in srgb, #000 28%, transparent);
  max-width: 360px;
}

.upgrade-toast--error {
  background: color-mix(in srgb, var(--gem-ruby-flat, #9b1c1c) 18%, var(--app-surface, #2d3f6e));
  border: 1px solid color-mix(in srgb, var(--gem-ruby-flat, #9b1c1c) 40%, transparent);
  color: var(--app-text, #ece8e0);
}

.upgrade-toast--success {
  background: color-mix(in srgb, var(--gem-emerald-flat, #0a6840) 18%, var(--app-surface, #2d3f6e));
  border: 1px solid color-mix(in srgb, var(--gem-emerald-flat, #0a6840) 40%, transparent);
  color: var(--app-text, #ece8e0);
}

/* ═══════════════════════════════════════════════════════════
   REDUCED MOTION — Kill all animations & transitions
   ═══════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  .upgrade-hero__mesh,
  .upgrade-plan,
  .upgrade-plan--highlighted,
  .upgrade-skeleton-card,
  .upgrade-compare-link__arrow,
  .btn-enterprise,
  .fc-tier-cta {
    animation: none !important;
    transition: none !important;
  }

  .upgrade-plan:hover,
  .upgrade-plan--highlighted:hover,
  .btn-enterprise:hover {
    transform: none !important;
  }

  .faq-item__icon {
    transition: none;
  }

  .upgrade-toggle__knob,
  .upgrade-toggle__switch,
  .upgrade-plan__cta {
    transition: none;
  }
}