/* ==========================================================================
   Features Section — Carousel with glass-morphism cards
   ========================================================================== */

.features {
  position: relative;
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-base) 100%);
}

/* Ambient glow behind features area */
.features::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(46, 104, 233, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Carousel Container ── */
.carousel {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px; /* space for arrows */
}

.carousel-viewport {
  overflow: hidden;
  padding: var(--space-lg) 0;
}

.carousel-track {
  display: flex;
  gap: var(--space-xl);
  transition: transform 400ms var(--ease-out);
  will-change: transform;
}

/* ── Feature Card (inside carousel) ── */
.feature-card {
  position: relative;
  flex: 0 0 auto;
  /* Width set by carousel.js based on viewport */
  padding: var(--space-xl) var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  overflow: hidden;
  /* Carousel transform/opacity handled by JS */
  transition: transform 400ms var(--ease-out),
              opacity 400ms var(--ease-out),
              border-color var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

/* Inactive card styling — applied/removed by JS */
.feature-card.carousel-inactive {
  opacity: 0.45;
  transform: scale(0.9);
}

.feature-card.carousel-active {
  opacity: 1;
  transform: scale(1);
}

/* Gradient border glow on hover */
.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg,
    rgba(46, 104, 233, 0),
    rgba(46, 104, 233, 0.3),
    rgba(56, 189, 248, 0.15),
    rgba(46, 104, 233, 0)
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
  pointer-events: none;
}

/* Background glow on hover */
.feature-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 30%, rgba(46, 104, 233, 0.06) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out);
  pointer-events: none;
}

.feature-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--glow-md), var(--shadow-card);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover::after {
  opacity: 1;
}

/* ── Feature Icon ── */
.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(46, 104, 233, 0.15), rgba(46, 104, 233, 0.05));
  border: 1px solid rgba(46, 104, 233, 0.2);
  margin-bottom: var(--space-sm);
  color: var(--blue-400);
  position: relative;
  z-index: 1;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
  position: relative;
  z-index: 1;
}

.feature-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

/* ── Carousel Arrows ── */
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(10, 14, 30, 0.8);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: all var(--duration-base) var(--ease-out);
}

.carousel-arrow svg {
  width: 20px;
  height: 20px;
}

.carousel-arrow--prev {
  left: 0;
}

.carousel-arrow--next {
  right: 0;
}

.carousel-arrow:hover:not(:disabled) {
  border-color: var(--border-glow);
  box-shadow: var(--glow-sm);
  background: rgba(10, 14, 30, 0.95);
}

.carousel-arrow:focus-visible {
  outline: 2px solid var(--blue-500);
  outline-offset: 4px;
}

.carousel-arrow:disabled {
  opacity: 0.25;
  cursor: default;
  pointer-events: none;
}

/* ── Carousel Dots ── */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all var(--duration-base) var(--ease-out);
}

.carousel-dot:hover {
  border-color: var(--border-glow);
}

.carousel-dot.active {
  background: var(--blue-500);
  border-color: var(--blue-500);
  box-shadow: 0 0 8px rgba(46, 104, 233, 0.4);
}

.carousel-dot:focus-visible {
  outline: 2px solid var(--blue-500);
  outline-offset: 4px;
}

/* ── Mobile: slightly narrower arrow spacing ── */
@media (max-width: 768px) {
  .carousel {
    padding: 0 48px;
  }

  .carousel-arrow {
    width: 36px;
    height: 36px;
  }

  .carousel-arrow svg {
    width: 16px;
    height: 16px;
  }

  .feature-card {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .carousel {
    padding: 0 40px;
  }

  .carousel-arrow {
    width: 32px;
    height: 32px;
  }

  .feature-card {
    padding: var(--space-lg) var(--space-md);
  }
}

/* ── Prefers Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  .carousel-track {
    transition: none;
  }

  .feature-card {
    transition: border-color var(--duration-base) var(--ease-out),
                box-shadow var(--duration-base) var(--ease-out);
  }
}