/* ============================================================
   SnagPulse Animations & Motion System
   ============================================================
   Every animation earns its place. Motion communicates state,
   directs attention, and creates the feeling of a LIVE system.
   Nothing gratuitous. Nothing cheap.
   ============================================================ */

/* === Reduced Motion: respect user preference === */
@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;
  }

  .sp-hero-image { animation: none !important; }
  .sp-score-ring circle { transition: none !important; }
  .sp-status-badge--hot { animation: none !important; }
  .sp-shimmer { animation: none !important; }
}

/* === Page Load: Orchestrated Entrance === */

/* Staggered fade-up — the signature entrance */
@keyframes sp-enter {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade only — for subtle elements */
@keyframes sp-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Slide from left — for breadcrumbs, labels */
@keyframes sp-slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-16px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale up — for badges, notifications */
@keyframes sp-scale-in {
  from {
    opacity: 0;
    transform: scale(0.85);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Entrance classes — add delay via inline style or nth-child */
.sp-enter {
  opacity: 0;
  animation: sp-enter var(--dur-entrance) var(--ease-out) forwards;
}

.sp-enter-delay-1 { animation-delay: 80ms; }
.sp-enter-delay-2 { animation-delay: 160ms; }
.sp-enter-delay-3 { animation-delay: 240ms; }
.sp-enter-delay-4 { animation-delay: 320ms; }
.sp-enter-delay-5 { animation-delay: 400ms; }
.sp-enter-delay-6 { animation-delay: 480ms; }

/* Scroll-triggered reveal — starts invisible, JS adds .is-visible */
.sp-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--dur-entrance) var(--ease-out),
    transform var(--dur-entrance) var(--ease-out);
}

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

/* Stagger children on reveal */
.sp-reveal-stagger > .sp-reveal {
  transition-delay: calc(var(--stagger-index, 0) * 70ms);
}

/* === Price Counter Animation === */

@keyframes sp-price-reveal {
  0% {
    opacity: 0;
    transform: translateY(8px);
    filter: blur(4px);
  }
  60% {
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.sp-price-animated {
  animation: sp-price-reveal 0.5s var(--ease-out) forwards;
}

/* Strikethrough draws across original price */
@keyframes sp-strikethrough {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

.sp-price-original {
  position: relative;
  display: inline-block;
}

.sp-price-original::after {
  content: '';
  position: absolute;
  left: -2px;
  top: 50%;
  height: 2px;
  width: 0;
  background: var(--accent-coral);
  opacity: 0.6;
  transform: rotate(-6deg);
  transform-origin: left center;
}

.sp-price-original.is-visible::after {
  animation: sp-strikethrough 0.4s 0.3s var(--ease-out) forwards;
}

/* === Status Badge Pulse (HOT deals only) === */

@keyframes sp-pulse-hot {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.65; }
}

.sp-status-badge--hot {
  animation: sp-pulse-hot 2.5s ease-in-out infinite;
}

/* Expiring clock rotation */
@keyframes sp-clock-tick {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.sp-status-badge--expiring .sp-status-badge__icon {
  animation: sp-clock-tick 4s linear infinite;
}

/* === Vote Widget === */

@keyframes sp-vote-ripple {
  from {
    transform: scale(0.5);
    opacity: 0.6;
  }
  to {
    transform: scale(2.5);
    opacity: 0;
  }
}

.sp-vote-btn__ripple {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-full);
  pointer-events: none;
}

.sp-vote-btn__ripple.is-active {
  animation: sp-vote-ripple 0.6s var(--ease-out) forwards;
}

/* Vote count bounce on increment */
@keyframes sp-count-bump {
  0%   { transform: translateY(0); }
  30%  { transform: translateY(-4px); }
  60%  { transform: translateY(1px); }
  100% { transform: translateY(0); }
}

.sp-vote-count.is-bumping {
  animation: sp-count-bump 0.4s var(--ease-spring);
}

/* === Button Press Feedback === */

.sp-btn:active {
  transform: scale(0.97);
  transition-duration: var(--dur-fast);
}

/* CTA arrow slide on hover */
.sp-btn-cta .sp-btn__arrow {
  transition: transform var(--dur-base) var(--ease-out);
}

.sp-btn-cta:hover .sp-btn__arrow {
  transform: translateX(4px);
}

/* === Dropdown / Menu Animation === */

@keyframes sp-dropdown-enter {
  from {
    opacity: 0;
    transform: translateY(-6px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes sp-dropdown-exit {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
  }
}

.sp-dropdown[data-state="open"] {
  animation: sp-dropdown-enter var(--dur-base) var(--ease-out) forwards;
}

.sp-dropdown[data-state="closing"] {
  animation: sp-dropdown-exit var(--dur-fast) var(--ease-smooth) forwards;
}

/* === Search Overlay === */

@keyframes sp-search-backdrop {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes sp-search-input-enter {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.sp-search-overlay {
  animation: sp-search-backdrop var(--dur-base) var(--ease-smooth) forwards;
}

.sp-search-overlay__inner {
  animation: sp-search-input-enter var(--dur-slow) var(--ease-out) forwards;
}

/* === Shimmer / Skeleton Loading === */

@keyframes sp-shimmer {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}

.sp-skeleton {
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.sp-skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.04) 40%,
    rgba(255, 255, 255, 0.06) 50%,
    rgba(255, 255, 255, 0.04) 60%,
    transparent 100%
  );
  animation: sp-shimmer 1.8s ease infinite;
}

[data-theme="light"] .sp-skeleton::after {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0, 0, 0, 0.03) 40%,
    rgba(0, 0, 0, 0.05) 50%,
    rgba(0, 0, 0, 0.03) 60%,
    transparent 100%
  );
}

/* === Hero Image Float === */

@keyframes sp-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.sp-hero-image {
  animation: sp-float 4s ease-in-out infinite;
}

/* === Filter Pill Indicator Slide === */

.sp-filter-indicator {
  transition:
    left var(--dur-base) var(--ease-spring),
    width var(--dur-base) var(--ease-spring);
}

/* === Card Hover Lift === */

.sp-deal-card {
  transition:
    transform var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out);
}

.sp-deal-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-emphasis);
}

/* === Link Underline (grows from center) === */

.sp-link {
  position: relative;
  text-decoration: none;
}

.sp-link::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: currentColor;
  transition: width var(--dur-base) var(--ease-out), left var(--dur-base) var(--ease-out);
}

.sp-link:hover::after {
  left: 0;
  width: 100%;
}

/* === Noise Grain Overlay === */

@keyframes sp-grain {
  0%, 100% { transform: translate(0, 0); }
  10%      { transform: translate(-2%, -3%); }
  20%      { transform: translate(1%, 2%); }
  30%      { transform: translate(-1%, -1%); }
  40%      { transform: translate(3%, -2%); }
  50%      { transform: translate(-2%, 1%); }
  60%      { transform: translate(1%, -3%); }
  70%      { transform: translate(-3%, 2%); }
  80%      { transform: translate(2%, 1%); }
  90%      { transform: translate(-1%, -2%); }
}

.sp-noise {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  opacity: var(--noise-opacity);
  pointer-events: none;
  z-index: 9999;
  animation: sp-grain 8s steps(10) infinite;
  mix-blend-mode: overlay;
}

/* === Mobile Bottom Nav Slide-Up === */

@keyframes sp-bottom-nav-enter {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.sp-bottom-nav {
  animation: sp-bottom-nav-enter 0.4s var(--ease-out) 0.2s forwards;
  opacity: 0;
}

/* === Toast Notification === */

@keyframes sp-toast-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes sp-toast-out {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(-8px) scale(0.95);
  }
}

.sp-toast {
  animation: sp-toast-in var(--dur-slow) var(--ease-spring) forwards;
}

.sp-toast.is-exiting {
  animation: sp-toast-out var(--dur-base) var(--ease-smooth) forwards;
}

/* === Theme Toggle Transition === */

.sp-theme-toggle__icon {
  transition: transform var(--dur-slow) var(--ease-spring);
}

.sp-theme-toggle:hover .sp-theme-toggle__icon {
  transform: rotate(15deg);
}

/* Moon to Sun crossfade */
.sp-theme-toggle__sun,
.sp-theme-toggle__moon {
  transition: opacity var(--dur-base) ease, transform var(--dur-base) ease;
  position: absolute;
}

[data-theme="dark"] .sp-theme-toggle__sun  { opacity: 0; transform: rotate(-90deg) scale(0.5); }
[data-theme="dark"] .sp-theme-toggle__moon { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .sp-theme-toggle__sun  { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .sp-theme-toggle__moon { opacity: 0; transform: rotate(90deg) scale(0.5); }

/* === Image Lazy Load Fade === */

.sp-img-lazy {
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease-smooth);
}

.sp-img-lazy.is-loaded {
  opacity: 1;
}