/* ============================================================
   Seniority Connect — Animations
   Centralized keyframes + utility classes
   ============================================================ */

/* === CORE ANIMATIONS === */

@keyframes ds-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes ds-fade-out {
  from { opacity: 1; }
  to   { opacity: 0; }
}

@keyframes ds-slide-up {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

@keyframes ds-slide-down {
  from { transform: translateY(-20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

@keyframes ds-slide-in-right {
  from { transform: translateX(100%); opacity: 0.5; }
  to   { transform: translateX(0); opacity: 1; }
}

@keyframes ds-slide-out-right {
  from { transform: translateX(0); opacity: 1; }
  to   { transform: translateX(100%); opacity: 0; }
}

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

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

@keyframes ds-bounce-in {
  0%   { transform: scale(0.3); opacity: 0; }
  50%  { transform: scale(1.05); }
  70%  { transform: scale(0.95); }
  100% { transform: scale(1); opacity: 1; }
}

/* === LOOPING ANIMATIONS === */

@keyframes ds-spin {
  to { transform: rotate(360deg); }
}

@keyframes ds-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.7; }
}

@keyframes ds-msg-pulse {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50%      { transform: scale(1.12); opacity: 1; }
}

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

/* === FEATURE-SPECIFIC ANIMATIONS === */

/* Souvenir recording wave bars */
@keyframes ds-souvenir-wave {
  0%, 100% { height: 10px; }
  50%      { height: 35px; }
}

/* Souvenir card attention pulse */
@keyframes ds-gentle-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(139, 92, 246, 0); }
  50%      { box-shadow: 0 0 0 8px var(--color-souvenir-ring, rgba(139, 92, 246, 0.15)); }
}

/* Followup AI waiting state */
@keyframes ds-followup-pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.95); }
  50%      { opacity: 1; transform: scale(1.05); }
}

/* Recording indicator */
@keyframes ds-rec-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.3); }
  50%      { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.15); }
}

/* Photo load */
@keyframes ds-photo-fade {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

/* === FEEDBACK ANIMATIONS (Phase 3) === */

/* Success checkmark draw (SVG stroke animation) */
@keyframes ds-checkmark {
  0%   { stroke-dashoffset: 24; }
  100% { stroke-dashoffset: 0; }
}

/* Send / fly away */
@keyframes ds-fly-up {
  0%   { transform: translateY(0) scale(1); opacity: 1; }
  100% { transform: translateY(-80vh) scale(0.3); opacity: 0; }
}

/* Error shake */
@keyframes ds-shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-4px); }
  40%      { transform: translateX(4px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}

/* Confetti burst */
@keyframes ds-confetti-fall {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(120px) rotate(720deg); opacity: 0; }
}

/* Modal scale+fade (Phase 3) */
@keyframes ds-modal-in {
  from { transform: scale(0.95); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}
@keyframes ds-modal-out {
  from { transform: scale(1); opacity: 1; }
  to   { transform: scale(0.95); opacity: 0; }
}

/* Wobble (bell, attention) */
@keyframes ds-wobble {
  0%, 100% { transform: rotate(0deg); }
  15%      { transform: rotate(15deg); }
  30%      { transform: rotate(-12deg); }
  45%      { transform: rotate(8deg); }
  60%      { transform: rotate(-5deg); }
  75%      { transform: rotate(2deg); }
}

/* Slide left (page transition) */
@keyframes ds-slide-in-left {
  from { transform: translateX(-100%); opacity: 0.5; }
  to   { transform: translateX(0); opacity: 1; }
}
@keyframes ds-slide-out-left {
  from { transform: translateX(0); opacity: 1; }
  to   { transform: translateX(-30%); opacity: 0; }
}

/* Fade up (for staggered card loading) */
@keyframes ds-fade-up {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* Soundwave bars (voice playback) */
@keyframes ds-soundwave {
  0%, 100% { transform: scaleY(0.3); }
  50%      { transform: scaleY(1); }
}

/* Star spin (souvenir save) */
@keyframes ds-star-spin {
  from { transform: scale(0) rotate(0deg); opacity: 0; }
  to   { transform: scale(1) rotate(360deg); opacity: 1; }
}

/* Check draw big (full-screen confirm) */
@keyframes ds-check-draw {
  0%   { stroke-dashoffset: 100; opacity: 0; }
  30%  { opacity: 1; }
  100% { stroke-dashoffset: 0; opacity: 1; }
}

/* === UTILITY CLASSES === */

.ds-animate-fade        { animation: ds-fade var(--duration-normal) var(--ease-smooth); }
.ds-animate-fade-out    { animation: ds-fade-out var(--duration-normal) var(--ease-smooth) forwards; }
.ds-animate-slide-up    { animation: ds-slide-up var(--duration-normal) var(--ease-smooth); }
.ds-animate-slide-down  { animation: ds-slide-down var(--duration-normal) var(--ease-smooth); }
.ds-animate-scale-in    { animation: ds-scale-in var(--duration-normal) var(--ease-spring); }
.ds-animate-bounce      { animation: ds-bounce-in var(--duration-slow) var(--ease-spring); }
.ds-animate-shake       { animation: ds-shake var(--duration-slow) var(--ease-default); }
.ds-animate-fly-up      { animation: ds-fly-up 800ms var(--ease-smooth) forwards; }
.ds-animate-wobble      { animation: ds-wobble var(--duration-slower) var(--ease-default); }
.ds-animate-modal-in    { animation: ds-modal-in var(--duration-normal) var(--ease-smooth); }
.ds-animate-modal-out   { animation: ds-modal-out var(--duration-normal) var(--ease-smooth) forwards; }
.ds-animate-fade-up     { animation: ds-fade-up var(--duration-normal) var(--ease-smooth) both; }
.ds-animate-star-spin   { animation: ds-star-spin var(--duration-slow) var(--ease-spring); }
.ds-animate-check-draw  { stroke-dasharray: 100; animation: ds-check-draw var(--duration-slower) var(--ease-default) forwards; }

/* Looping — will-change hints GPU compositor for sustained transforms */
.ds-animate-spin        { will-change: transform; animation: ds-spin 800ms linear infinite; }
.ds-animate-pulse       { will-change: opacity; animation: ds-pulse 2s var(--ease-default) infinite; }
.ds-animate-msg-pulse   { will-change: transform, opacity; animation: ds-msg-pulse 2s var(--ease-smooth) infinite; }

/* Shimmer / skeleton loading */
.ds-animate-shimmer {
  background: linear-gradient(90deg,
    var(--color-bg-muted) 25%,
    var(--color-bg-subtle) 50%,
    var(--color-bg-muted) 75%
  );
  background-size: 200% 100%;
  will-change: background-position;
  animation: ds-shimmer 1.5s infinite;
}
/* A29-K7 NOTE: ds-shimmer relies on background-position (paint-bound).
   Refactor to transform: translateX() via ::before pseudo-element deferred
   post-pilot — requires touching every .ds-animate-shimmer call site to
   ensure parent has overflow:hidden + relative positioning. */

/* Soundwave bars (voice playback) */
.ds-soundwave-bar {
  display: inline-block; width: 3px; border-radius: 2px;
  background: currentColor; transform-origin: bottom;
  will-change: transform;
  animation: ds-soundwave 0.8s var(--ease-smooth) infinite;
}
.ds-soundwave-bar:nth-child(1) { animation-delay: 0ms; height: 16px; }
.ds-soundwave-bar:nth-child(2) { animation-delay: 0.15s; height: 22px; }
.ds-soundwave-bar:nth-child(3) { animation-delay: 0.3s; height: 18px; }
.ds-soundwave-bar:nth-child(4) { animation-delay: 0.45s; height: 24px; }
.ds-soundwave-bar:nth-child(5) { animation-delay: 0.6s; height: 14px; }

/* Feature-specific classes */
.ds-souvenir-wave       { animation: ds-souvenir-wave 1.2s var(--ease-smooth) infinite; }
.ds-souvenir-pulse      { animation: ds-gentle-pulse 2.5s var(--ease-smooth) infinite; }
.ds-followup-pulse      { animation: ds-followup-pulse 1.5s var(--ease-smooth) infinite; }
.ds-rec-pulse           { will-change: box-shadow; animation: ds-rec-pulse 1s var(--ease-smooth) infinite; }
.ds-photo-fade          { animation: ds-photo-fade var(--duration-normal) var(--ease-default); }

/* Slide in/out (legacy compat) */
.ds-slide-in            { animation: ds-slide-in-right var(--duration-normal) var(--ease-smooth) forwards; }
.ds-slide-out           { animation: ds-slide-out-right var(--duration-normal) var(--ease-smooth) forwards; }

/* === STAGGER CHILDREN === */

.ds-stagger > * {
  animation: ds-slide-up var(--duration-normal) var(--ease-smooth) both;
}
.ds-stagger > *:nth-child(1) { animation-delay: 0ms; }
.ds-stagger > *:nth-child(2) { animation-delay: 50ms; }
.ds-stagger > *:nth-child(3) { animation-delay: 100ms; }
.ds-stagger > *:nth-child(4) { animation-delay: 150ms; }
.ds-stagger > *:nth-child(5) { animation-delay: 200ms; }
.ds-stagger > *:nth-child(6) { animation-delay: 250ms; }
.ds-stagger > *:nth-child(7) { animation-delay: 300ms; }
.ds-stagger > *:nth-child(8) { animation-delay: 350ms; }

/* === REDUCED MOTION === */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  /* Vestibular safety: kill transform on slide/fly/shake/wobble/bounce.
     Duration override alone leaves a 0.01ms transform spike that triggers
     motion sickness on sensitive users. */
  .ds-animate-fly-up,
  .ds-animate-shake,
  .ds-animate-wobble,
  .ds-animate-bounce,
  .ds-animate-bounce-in,
  .ds-animate-slide-up,
  .ds-animate-slide-down,
  .ds-animate-slide-in,
  .ds-animate-slide-out,
  .ds-slide-in,
  .ds-slide-out {
    animation: none !important;
    transform: none !important;
  }
}