/* ═══════════════════════════════════════════════════
   Atomi — CTA Section
   ═══════════════════════════════════════════════════ */

.cta-section {
  position: relative;
  padding: clamp(var(--space-64), 12vh, var(--space-96)) clamp(var(--space-24), 5vw, var(--space-96));
  text-align: center;
  background:
    radial-gradient(ellipse 52% 56% at 48% 30%, oklch(0.84 0.12 72 / 0.10), transparent 60%),
    radial-gradient(ellipse 44% 48% at 56% 62%, oklch(0.72 0.17 294 / 0.08), transparent 56%),
    radial-gradient(ellipse 38% 34% at 22% 78%, oklch(0.86 0.13 48 / 0.06), transparent 48%),
    linear-gradient(180deg, var(--ivory) 0%, var(--ivory-warm) 62%, var(--rhythm-paper-deep) 100%);
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(300px, 46vw, 600px);
  height: clamp(240px, 36vw, 480px);
  border-radius: 50%;
  background:
    radial-gradient(circle at 44% 38%, oklch(0.86 0.14 52 / 0.16), transparent 42%),
    radial-gradient(circle at 56% 58%, oklch(0.7 0.17 294 / 0.08), transparent 52%);
  filter: blur(40px);
  pointer-events: none;
  animation: cta-pulse 5.5s ease-in-out infinite;
}

@keyframes cta-pulse {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.85; transform: translate(-50%, -50%) scale(1.08); }
}

.cta-section-inner {
  position: relative;
  z-index: 1;
  width: min(800px, 100%);
  margin: 0 auto;
}

/* ── AI Cube visual ────────────────────────────────── */
.cta-cube {
  position: relative;
  width: 80px; height: 80px;
  margin: 0 auto 28px;
  background:
    radial-gradient(circle at 36% 28%, oklch(0.99 0.01 84 / 0.7), transparent 24%),
    linear-gradient(145deg, oklch(0.72 0.18 294 / 0.24), oklch(0.84 0.14 62 / 0.2));
  border: 1px solid oklch(0.84 0.14 73 / 0.30);
  border-radius: var(--radius-md);
  box-shadow:
    0 0 48px oklch(0.82 0.16 62 / 0.22),
    0 0 88px oklch(0.72 0.17 304 / 0.10);
  animation: cta-cube-float 4s ease-in-out infinite;
}

@keyframes cta-cube-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-8px) rotate(2deg); }
  66% { transform: translateY(-4px) rotate(-1deg); }
}

.cta-cube::after {
  content: "";
  position: absolute;
  inset: -1px; border-radius: inherit;
  background: linear-gradient(145deg, oklch(0.99 0.01 82 / 0.36), transparent 52%);
  pointer-events: none;
}

/* ── Heading ──────────────────────────────────────── */
.cta-section h2 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 3.6vw, 3.6rem);
  font-weight: 650;
  line-height: 1.08;
  color: var(--ink);
  margin-bottom: var(--space-8);
}

.cta-section p {
  font-size: clamp(0.98rem, 1.2vw, 1.12rem);
  color: var(--ink-soft);
  max-width: 500px;
  margin: 0 auto 28px;
  line-height: 1.55;
}

.cta-section .cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Approved design alignment: purple banner CTA */
@media (min-width: 1121px) {
  .cta-section {
    padding: 18px clamp(24px, 5vw, 96px) 24px;
    text-align: left;
    background:
      radial-gradient(ellipse 38% 48% at 78% 28%, oklch(0.72 0.17 294 / 0.06), transparent 56%),
      linear-gradient(180deg, var(--ivory) 0%, var(--rhythm-paper) 100%);
  }

  .cta-section::before {
    display: none;
  }

  .cta-section-inner {
    width: min(1120px, 100%);
    min-height: 146px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: center;
    padding: 28px 44px;
    border: 1px solid oklch(0.92 0.06 310 / 0.28);
    border-radius: 15px;
    overflow: hidden;
    background:
      radial-gradient(ellipse 44% 130% at 86% 48%, oklch(0.88 0.11 300 / 0.5), transparent 62%),
      radial-gradient(ellipse 44% 110% at 12% 72%, oklch(0.36 0.17 292 / 0.48), transparent 62%),
      linear-gradient(100deg, oklch(0.45 0.19 294) 0%, oklch(0.62 0.16 300) 52%, oklch(0.82 0.11 303) 100%);
    box-shadow:
      0 14px 34px oklch(0.42 0.12 294 / 0.14),
      inset 0 1px 0 oklch(0.99 0.01 82 / 0.24);
  }

  .cta-cube {
    grid-column: 2;
    grid-row: 1 / span 3;
    justify-self: end;
    width: 132px;
    height: 132px;
    margin: 0 28px 0 0;
    opacity: 0.66;
    border-radius: 16px;
    background:
      radial-gradient(circle at 36% 28%, oklch(0.99 0.01 84 / 0.88), transparent 20%),
      linear-gradient(145deg, oklch(0.76 0.17 286 / 0.72), oklch(0.88 0.11 64 / 0.42));
    border-color: oklch(0.99 0.01 82 / 0.26);
    box-shadow:
      0 0 54px oklch(0.99 0.01 82 / 0.22),
      0 0 92px oklch(0.72 0.17 304 / 0.22);
  }

  .cta-section h2 {
    max-width: 560px;
    margin: 0 0 7px;
    font-size: clamp(1.78rem, 2.18vw, 2.42rem);
    line-height: 1.08;
    color: oklch(0.99 0.012 82);
  }

  .cta-section p {
    max-width: 500px;
    margin: 0 0 15px;
    font-size: 0.8rem;
    line-height: 1.44;
    color: oklch(0.99 0.012 82 / 0.86);
  }

  .cta-section .cta-actions {
    justify-content: flex-start;
    gap: 12px;
  }

  .cta-section .btn {
    min-height: 38px;
    padding-inline: 21px;
    border-radius: 10px;
    font-size: 0.72rem;
  }

  .cta-section .btn-primary {
    background: oklch(0.99 0.012 82 / 0.14);
    border-color: oklch(0.99 0.012 82 / 0.28);
    color: oklch(0.99 0.012 82);
    box-shadow: inset 0 1px 0 oklch(0.99 0.012 82 / 0.18);
  }

  .cta-section .btn-ghost {
    background: oklch(0.99 0.012 82 / 0.08);
    border-color: oklch(0.99 0.012 82 / 0.24);
    color: oklch(0.99 0.012 82);
    box-shadow: none;
  }
}