/* =============================================
   NoteD Web — Animations & Micro-interactions
   ============================================= */

/* === Keyframes === */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(100%); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-ring {
  0%   { transform: scale(0.8); opacity: 0.8; }
  100% { transform: scale(2);   opacity: 0; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(var(--color-red-rgb), 0.4); }
  50%       { box-shadow: 0 0 0 12px rgba(var(--color-red-rgb), 0); }
}

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

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

@keyframes waveFloat {
  0%, 100% { transform: scaleY(0.4); }
  50%       { transform: scaleY(1); }
}

@keyframes ripple {
  0%   { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.5); opacity: 0; }
}

@keyframes dotBounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40%            { transform: scale(1.0); opacity: 1; }
}

@keyframes slideInModal {
  from { opacity: 0; transform: scale(0.92) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes recordPulse {
  0%   { transform: scale(1); opacity: 1; }
  50%  { transform: scale(1.15); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}

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

@keyframes toastIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* === Utility Classes === */
.animate-fade-in    { animation: fadeIn 0.3s ease forwards; }
.animate-fade-up    { animation: fadeInUp 0.4s ease forwards; }
.animate-scale-in   { animation: fadeInScale 0.3s var(--transition-spring) forwards; }
.animate-slide-right { animation: slideInRight 0.3s ease forwards; }
.animate-slide-up   { animation: slideUp 0.35s cubic-bezier(0.16,1,0.3,1) forwards; }

/* Stagger children */
.stagger-children > * { opacity: 0; animation: fadeInUp 0.4s ease forwards; }
.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.10s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.20s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.30s; }

/* Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(var(--color-accent-rgb), 0.3);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
  flex-shrink: 0;
}
.spinner--sm { width: 14px; height: 14px; border-width: 1.5px; }
.spinner--lg { width: 32px; height: 32px; border-width: 3px; }

/* Shimmer loading */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-surface) 25%,
    var(--color-surface2) 50%,
    var(--color-surface) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s ease infinite;
  border-radius: var(--radius-sm);
}

/* Scale press effect */
.press-scale {
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  cursor: pointer;
}
.press-scale:active { transform: scale(0.94); opacity: 0.85; }