/* ============================================
   AI ENGINE — Orbital Core Visualization
   ============================================ */

.ai-engine {
  position: relative;
  z-index: 2;
  padding: var(--space-32) var(--space-6);
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.ai-engine::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0, 102, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.ai-engine__inner {
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}

/* ── Content ── */
.ai-engine__content {
  position: relative;
}

.ai-engine__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.ai-engine__feature {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--glass-bg);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: default;
}

.ai-engine__feature:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border);
  box-shadow: var(--shadow-md);
}

.ai-engine__feature-icon svg {
  width: 18px;
  height: 18px;
}

.ai-engine__orbit-card-icon svg {
  width: 14px;
  height: 14px;
}

.ai-engine__feature-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(0, 163, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.ai-engine__feature-text h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.ai-engine__feature-text p {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: 2px;
}

/* ── Orbital Visualization ── */
.ai-engine__visual {
  position: relative;
  width: 100%;
  height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Core orb */
.ai-engine__core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  z-index: 10;
}

.ai-engine__core-orb {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%,
    rgba(0, 212, 255, 0.6) 0%,
    rgba(0, 163, 255, 0.4) 30%,
    rgba(0, 102, 255, 0.2) 60%,
    transparent 80%
  );
  box-shadow:
    0 0 40px rgba(0, 163, 255, 0.4),
    0 0 80px rgba(0, 163, 255, 0.2),
    0 0 120px rgba(0, 163, 255, 0.1),
    inset 0 0 40px rgba(0, 163, 255, 0.3);
  animation: core-pulse 4s ease-in-out infinite;
}

.ai-engine__core-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: white;
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.8);
  white-space: nowrap;
}

/* Orbit rings */
.ai-engine__orbit-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid rgba(0, 163, 255, 0.08);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.ai-engine__orbit-ring--1 {
  width: 250px;
  height: 250px;
  border-style: dashed;
  border-color: rgba(0, 163, 255, 0.1);
  animation: rotate-slow 40s linear infinite;
}

.ai-engine__orbit-ring--2 {
  width: 370px;
  height: 370px;
  border-color: rgba(0, 163, 255, 0.06);
  animation: rotate-reverse 60s linear infinite;
}

.ai-engine__orbit-ring--3 {
  width: 480px;
  height: 480px;
  border-style: dashed;
  border-color: rgba(0, 163, 255, 0.04);
  animation: rotate-slow 80s linear infinite;
}

/* Orbiting capability items */
.ai-engine__orbit-item {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 5;
  transform-origin: 0 0;
  pointer-events: auto;
}

.ai-engine__orbit-card {
  background: rgba(7, 17, 30, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 163, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  cursor: default;
  transition: all var(--duration-normal) var(--ease-out);
  transform: translate(-50%, -50%);
}

.ai-engine__orbit-card:hover {
  border-color: rgba(0, 163, 255, 0.4);
  box-shadow: 0 0 25px rgba(0, 163, 255, 0.2), 0 8px 30px rgba(0, 0, 0, 0.4);
  transform: translate(-50%, -50%) scale(1.1);
}

.ai-engine__orbit-card-icon {
  font-size: 14px;
}

/* Orbit animation keyframes for each item */
.ai-engine__orbit-item--1 { animation: orbit 15s linear infinite; --orbit-radius: 125px; }
.ai-engine__orbit-item--2 { animation: orbit 15s linear infinite -2.5s; --orbit-radius: 125px; }
.ai-engine__orbit-item--3 { animation: orbit-reverse 22s linear infinite; --orbit-radius: 185px; }
.ai-engine__orbit-item--4 { animation: orbit-reverse 22s linear infinite -7.3s; --orbit-radius: 185px; }
.ai-engine__orbit-item--5 { animation: orbit 30s linear infinite; --orbit-radius: 240px; }
.ai-engine__orbit-item--6 { animation: orbit 30s linear infinite -15s; --orbit-radius: 240px; }

/* Core pulse rings */
.ai-engine__core-pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 1px solid rgba(0, 163, 255, 0.2);
  animation: pulse-ring 4s ease-out infinite;
  pointer-events: none;
}

.ai-engine__core-pulse--2 {
  animation-delay: 1.3s;
}

.ai-engine__core-pulse--3 {
  animation-delay: 2.6s;
}

/* ── Responsive ── */
@media (max-width: 1100px) {
  .ai-engine__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .ai-engine__visual {
    height: 480px;
  }

  .ai-engine__content .section-desc {
    margin-inline: auto;
  }

  .ai-engine__features {
    align-items: center;
  }

  .ai-engine__feature {
    max-width: 500px;
    width: 100%;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .ai-engine {
    padding: var(--space-20) var(--space-4);
  }

  .ai-engine__visual {
    height: 380px;
  }

  .ai-engine__orbit-ring--3 {
    display: none;
  }

  .ai-engine__orbit-item--5,
  .ai-engine__orbit-item--6 {
    display: none;
  }

  /* Pull middle orbit inward so cards don't clip on narrow phones */
  .ai-engine__orbit-item--3,
  .ai-engine__orbit-item--4 {
    --orbit-radius: 150px;
  }
}

@media (max-width: 480px) {
  .ai-engine__visual {
    height: 420px;
  }

  /* Hide ring 2 — its 185px radius clips on narrow viewports */
  .ai-engine__orbit-ring--2 {
    display: none;
  }

  /* All 4 cards on a single 100px orbit, evenly spaced 90° apart */
  .ai-engine__orbit-item--1 { --orbit-radius: 100px; animation: orbit 20s linear infinite    0s; }
  .ai-engine__orbit-item--2 { --orbit-radius: 100px; animation: orbit 20s linear infinite   -5s; }
  .ai-engine__orbit-item--3 { --orbit-radius: 100px; animation: orbit 20s linear infinite  -10s; }
  .ai-engine__orbit-item--4 { --orbit-radius: 100px; animation: orbit 20s linear infinite  -15s; }

  /* Compact cards so they stay within bounds at narrow widths */
  .ai-engine__orbit-card {
    padding: 6px 10px;
    font-size: 10px;
    gap: 4px;
  }

  .ai-engine__orbit-card-icon svg {
    width: 10px;
    height: 10px;
  }
}