/* ==========================================================================
   Utilities — Shared visual effects, textures, animations
   ========================================================================== */

/* Dot grid background texture */
.dot-grid {
  background-image: radial-gradient(circle, var(--on-surface) 0.5px, transparent 0.5px);
  background-size: 24px 24px;
}

.dot-grid--light {
  background-image: radial-gradient(circle, var(--on-surface-light) 0.5px, transparent 0.5px);
  background-size: 24px 24px;
}

/* Glassmorphism */
.glass {
  background: rgba(251, 246, 238, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.glass--dark {
  background: rgba(13, 13, 15, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* Ember gradient (primary CTA) */
.ember-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
}

/* Ghost border */
.ghost-border {
  border: var(--border-ghost);
}

/* Grayscale hover reveal */
.grayscale-hover {
  filter: grayscale(100%);
  transition: filter var(--duration-slow) var(--ease-out);
}

.grayscale-hover:hover {
  filter: grayscale(0%);
}

/* Accent left border */
.accent-border-left {
  border-left: var(--border-accent);
}

/* Pill shape */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 1rem;
  border: 1px solid var(--primary-fixed);
  color: var(--primary-fixed);
  font-family: var(--font-label);
  font-size: var(--text-label-sm);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  transition: all var(--duration-fast) var(--ease-out);
}

.pill:hover {
  background: var(--primary-fixed);
  color: var(--on-primary-container);
}

.pill--dark {
  border-color: var(--primary-fixed);
  color: var(--primary-fixed);
}

.pill--dark:hover {
  background: var(--primary-fixed);
  color: var(--on-primary-container);
}

.pill--solid {
  background: var(--surface-container-highest);
  border: none;
  font-size: var(--text-label-sm);
  padding: 0.375rem 0.75rem;
  letter-spacing: 0.05em;
}

.pill--filter {
  padding: 0.375rem 1.25rem;
  border: none;
  font-size: var(--text-label-md);
  font-weight: var(--weight-medium);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(48, 47, 41, 0.6);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.pill--filter:hover,
.pill--filter.active {
  background: var(--on-surface);
  color: var(--surface);
}

/* Fade-in animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
  will-change: opacity, transform;
}

.animate-on-scroll.visible,
.no-js .animate-on-scroll {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children animation */
.stagger-children .animate-on-scroll:nth-child(1) { transition-delay: 0ms; }
.stagger-children .animate-on-scroll:nth-child(2) { transition-delay: 80ms; }
.stagger-children .animate-on-scroll:nth-child(3) { transition-delay: 160ms; }
.stagger-children .animate-on-scroll:nth-child(4) { transition-delay: 240ms; }
.stagger-children .animate-on-scroll:nth-child(5) { transition-delay: 320ms; }
.stagger-children .animate-on-scroll:nth-child(6) { transition-delay: 400ms; }
.stagger-children .animate-on-scroll:nth-child(7) { transition-delay: 480ms; }
.stagger-children .animate-on-scroll:nth-child(8) { transition-delay: 560ms; }

/* Material Symbols config */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
  display: inline-block;
  vertical-align: middle;
}