/* ============================================================
   DGA Animations — Scroll Reveals, Hover Effects, Transitions
   Respects prefers-reduced-motion
   ============================================================ */

/* ─── Scroll Reveal Keyframes ─── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Counter animation */
@keyframes countUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Pulse for chat widget */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Shimmer for loading */
@keyframes shimmer {
  0% { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

/* Gentle float */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ─── Scroll Reveal Classes ─── */
.reveal {
  opacity: 1;
  transform: none;
}

.reveal[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slower) var(--ease-out-expo),
              transform var(--duration-slower) var(--ease-out-expo);
}

.reveal[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-reveal="left"] {
  transform: translateX(-24px);
}

.reveal[data-reveal="left"].revealed {
  transform: translateX(0);
}

.reveal[data-reveal="right"] {
  transform: translateX(24px);
}

.reveal[data-reveal="right"].revealed {
  transform: translateX(0);
}

.reveal[data-reveal="scale"] {
  transform: scale(0.92);
}

.reveal[data-reveal="scale"].revealed {
  transform: scale(1);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

.stagger-children.revealed > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }

/* ─── Hero Animations ─── */
.hero-animate {
  animation: fadeUp 0.8s var(--ease-out-expo) forwards;
}

.hero-animate--delay-1 { animation-delay: 100ms; opacity: 0; }
.hero-animate--delay-2 { animation-delay: 250ms; opacity: 0; }
.hero-animate--delay-3 { animation-delay: 400ms; opacity: 0; }
.hero-animate--delay-4 { animation-delay: 550ms; opacity: 0; }

/* ─── Hover Micro-interactions ─── */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-out-quart),
              box-shadow var(--duration-normal) var(--ease-out-quart);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-glow {
  transition: box-shadow var(--duration-normal) var(--ease-out-quart);
}

.hover-glow:hover {
  box-shadow: 0 0 24px oklch(0.43 0.10 250 / 0.15);
}

/* ─── Loading / Skeleton ─── */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface) 25%,
    var(--color-border-light) 50%,
    var(--color-surface) 75%
  );
  background-size: 200px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-md);
}

.skeleton--text {
  height: 16px;
  width: 100%;
  margin-bottom: var(--space-2);
}

.skeleton--text:last-child {
  width: 60%;
}

.skeleton--circle {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}

.skeleton--img {
  width: 100%;
  aspect-ratio: 16/10;
}

/* ─── Chat widget pulse ─── */
.chat-widget__toggle {
  animation: pulse 3s var(--ease-out-quart) infinite;
  animation-delay: 5s;
}

/* ─── Floating elements ─── */
.float {
  animation: float 4s var(--ease-out-quart) infinite;
}

/* ─── Page transition overlay ─── */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: var(--z-max);
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  .reveal[data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .stagger-children > * {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-animate {
    animation: none;
    opacity: 1;
  }

  .hero-animate--delay-1,
  .hero-animate--delay-2,
  .hero-animate--delay-3,
  .hero-animate--delay-4 {
    animation: none;
    opacity: 1;
  }

  .hover-lift:hover {
    transform: none;
  }

  .skeleton {
    animation: none;
  }

  .chat-widget__toggle {
    animation: none;
  }

  .float {
    animation: none;
  }
}

/* ─── Impeccable Active/Focus Micro-interactions ─── */
.btn:active, 
.tab:active, 
.card:active, 
.service-card:active, 
.news-article:active, 
.mega-menu__link:active,
.footer-social__link:active,
.lang-switch__btn:active,
.theme-switch__btn:active,
.a11y-toolbar__btn:active {
  transform: scale(0.96) !important;
  transition: transform 100ms var(--ease-out-quint) !important;
}

/* Base button scaling */
.btn {
  transition: all var(--duration-fast) var(--ease-out-quart);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Ensure focus rings are visible and animate smoothly */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  transition: outline-offset 150ms var(--ease-out-quart), outline-color 150ms var(--ease-out-quart);
}

/* Inputs focus animation */
.form-input:focus, 
.search-input:focus, 
.news-search__input:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
  border-color: var(--color-primary) !important;
  box-shadow: 0 0 0 3px oklch(0.43 0.10 250 / 0.12) !important;
  transition: all 250ms var(--ease-out-quart) !important;
}

/* Stagger card reveals */
.stagger-grid {
  display: grid;
}
.stagger-grid > * {
  opacity: 0;
  transform: translateY(20px);
}
.stagger-grid.revealed > * {
  animation: fadeUp 600ms var(--ease-out-expo) forwards;
}
.stagger-grid.revealed > *:nth-child(1) { animation-delay: 50ms; }
.stagger-grid.revealed > *:nth-child(2) { animation-delay: 100ms; }
.stagger-grid.revealed > *:nth-child(3) { animation-delay: 150ms; }
.stagger-grid.revealed > *:nth-child(4) { animation-delay: 200ms; }
.stagger-grid.revealed > *:nth-child(5) { animation-delay: 250ms; }
.stagger-grid.revealed > *:nth-child(6) { animation-delay: 300ms; }
.stagger-grid.revealed > *:nth-child(n+7) { animation-delay: 350ms; }
.stagger-grid.revealed > *:nth-child(n+8) { animation-delay: 400ms; }
.stagger-grid.revealed > *:nth-child(n+9) { animation-delay: 400ms; }

/* Modal Entry/Exit */
.modal-backdrop {
  opacity: 0;
  transition: opacity 300ms var(--ease-out-quart);
}
.modal-backdrop.open {
  opacity: 1;
}
.modal-content {
  opacity: 0;
  transform: scale(0.95) translateY(10px);
  transition: all 400ms var(--ease-out-expo);
}
.modal-backdrop.open .modal-content {
  opacity: 1;
  transform: scale(1) translateY(0);
}