/* ==========================================================================
   DESA55 Animations & Transitions
   ========================================================================== */

/* ── Keyframes ───────────────────────────────────────────────────────────── */

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

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

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

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

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.90); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideInLeft {
  from { transform: translateX(-100%); }
  to   { transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.15); opacity: 0.75; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50%       { background-position: 100% 50%; }
}

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 20px rgba(34, 197, 94, 0.15); }
  50%       { box-shadow: 0 0 40px rgba(34, 197, 94, 0.30); }
}

@keyframes drawLine {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── Scroll-triggered Reveal (via Intersection Observer) ─────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 700ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 700ms cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition:
    opacity 700ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 700ms cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition:
    opacity 700ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 700ms cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition:
    opacity 600ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 600ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: none; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: none; }

/* ── Utility Animation Classes ───────────────────────────────────────────── */

.animate-fade-in   { animation: fadeIn 600ms ease both; }
.animate-fade-up   { animation: fadeUp 700ms cubic-bezier(0.4, 0, 0.2, 1) both; }
.animate-fade-down { animation: fadeDown 700ms cubic-bezier(0.4, 0, 0.2, 1) both; }
.animate-scale-in  { animation: scaleIn 600ms cubic-bezier(0.4, 0, 0.2, 1) both; }
.animate-float     { animation: float 5s ease-in-out infinite; }
.animate-pulse     { animation: pulse 2s ease-in-out infinite; }
.animate-spin      { animation: spin 1.2s linear infinite; }
.animate-breathe   { animation: breathe 3s ease-in-out infinite; }

/* Delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }

/* ── Shimmer Skeleton ────────────────────────────────────────────────────── */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-secondary) 25%,
    rgba(34, 197, 94, 0.05) 50%,
    var(--bg-secondary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s infinite;
  border-radius: var(--radius-sm);
}

/* ── Hover Scale ─────────────────────────────────────────────────────────── */

.hover-scale {
  transition: transform var(--transition-base);
}
.hover-scale:hover { transform: scale(1.03); }

.hover-lift {
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ── Gradient Animated Text ──────────────────────────────────────────────── */

.animate-gradient-text {
  background: linear-gradient(270deg, #22C55E, #84CC16, #22C55E);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 4s ease infinite;
}

/* ── Typing Cursor ───────────────────────────────────────────────────────── */

.typing-cursor::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--color-primary);
  margin-left: 2px;
}

/* ── Reduced Motion Override ─────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right, .reveal-scale,
  .stagger-children > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .animate-float,
  .animate-pulse,
  .animate-spin,
  .animate-breathe,
  .animate-gradient-text,
  .skeleton {
    animation: none !important;
  }
}