/* ==========================================================================
   ACME Mobility – Animations
   animations.css — Micro-animations, scroll effects, transitions
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Scroll-triggered Reveal Animations
   -------------------------------------------------------------------------- */

/* Base state: elements start hidden */
[data-animate] {
  opacity: 0;
  transition: opacity 600ms ease, transform 600ms ease;
}

/* Fade in up (default) */
[data-animate="fade-up"] {
  transform: translateY(24px);
}

/* Fade in */
[data-animate="fade-in"] {
  transform: none;
}

/* Fade in from left */
[data-animate="fade-left"] {
  transform: translateX(-24px);
}

/* Fade in from right */
[data-animate="fade-right"] {
  transform: translateX(24px);
}

/* Scale in */
[data-animate="scale-in"] {
  transform: scale(0.95);
}

/* Visible state — triggered by IntersectionObserver in JS */
[data-animate].visible {
  opacity: 1;
  transform: none;
}

/* Delay variants */
[data-delay="100"] { transition-delay: 100ms; }
[data-delay="150"] { transition-delay: 150ms; }
[data-delay="200"] { transition-delay: 200ms; }
[data-delay="300"] { transition-delay: 300ms; }
[data-delay="400"] { transition-delay: 400ms; }
[data-delay="500"] { transition-delay: 500ms; }
[data-delay="600"] { transition-delay: 600ms; }
[data-delay="700"] { transition-delay: 700ms; }
[data-delay="800"] { transition-delay: 800ms; }

/* --------------------------------------------------------------------------
   2. Hero animations
   -------------------------------------------------------------------------- */

/* Hero entry sequence */
.hero-content .hero-badge   { animation: slideDownFade 700ms ease forwards; animation-delay: 200ms; opacity: 0; }
.hero-content .hero-title   { animation: slideUpFade  700ms ease forwards; animation-delay: 400ms; opacity: 0; }
.hero-content .hero-description { animation: slideUpFade 700ms ease forwards; animation-delay: 600ms; opacity: 0; }
.hero-content .hero-actions { animation: slideUpFade  700ms ease forwards; animation-delay: 800ms; opacity: 0; }
.hero-content .hero-stats   { animation: slideUpFade  700ms ease forwards; animation-delay: 1000ms; opacity: 0; }

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

@keyframes slideDownFade {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   3. Floating / Breathing animations (hero decorative elements)
   -------------------------------------------------------------------------- */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

@keyframes float-slow {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50%       { transform: translateY(-20px) rotate(3deg); }
}

@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50%       { transform: scale(1.05); opacity: 1; }
}

.animate-float      { animation: float      4s ease-in-out infinite; }
.animate-float-slow { animation: float-slow 7s ease-in-out infinite; }
.animate-breathe    { animation: breathe    3s ease-in-out infinite; }

/* --------------------------------------------------------------------------
   4. Gradient shift animation (hero background)
   -------------------------------------------------------------------------- */
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.animate-gradient {
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
}

/* --------------------------------------------------------------------------
   5. Glow pulse (brand icon, primary elements)
   -------------------------------------------------------------------------- */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(0,180,216,0.2); }
  50%       { box-shadow: 0 0 25px rgba(0,180,216,0.5), 0 0 50px rgba(0,180,216,0.2); }
}

.animate-glow { animation: glowPulse 3s ease-in-out infinite; }

/* --------------------------------------------------------------------------
   6. Spin (loading / icons)
   -------------------------------------------------------------------------- */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.animate-spin { animation: spin 1s linear infinite; }

/* --------------------------------------------------------------------------
   7. Counter number animation (stats)
   -------------------------------------------------------------------------- */
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.count-up { animation: countUp 500ms ease forwards; }

/* --------------------------------------------------------------------------
   8. Sidebar nav item hover
   -------------------------------------------------------------------------- */
.nav-item {
  position: relative;
}

/* Left glow indicator on hover (complementary to the active state) */
.nav-item::after {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--primary);
  border-radius: 0 2px 2px 0;
  transition: height var(--transition-fast);
  opacity: 0.5;
}

.nav-item:hover::after {
  height: 60%;
}

/* --------------------------------------------------------------------------
   9. Card shimmer loading skeleton
   -------------------------------------------------------------------------- */
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position:  200% 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-hover) 25%,
    var(--bg-card)  50%,
    var(--bg-hover) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   10. Underline slide animation (links)
   -------------------------------------------------------------------------- */
.link-animated {
  position: relative;
  text-decoration: none;
  color: var(--primary);
}

.link-animated::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--transition-base);
}

.link-animated:hover::after { width: 100%; }

/* --------------------------------------------------------------------------
   11. Page transition (between pages)
   -------------------------------------------------------------------------- */
@keyframes pageEnter {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-wrapper { animation: pageEnter 400ms ease forwards; }

/* --------------------------------------------------------------------------
   12. Tooltip
   -------------------------------------------------------------------------- */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  padding: 5px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--bg-border);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: var(--z-toast);
  box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --------------------------------------------------------------------------
   13. Scroll-to-top button
   -------------------------------------------------------------------------- */
.scroll-top-btn {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--bg-border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: var(--z-overlay);
  box-shadow: var(--shadow-md);
}

.scroll-top-btn.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top-btn:hover {
  background: var(--primary-muted);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.scroll-top-btn svg { width: 16px; height: 16px; }

/* --------------------------------------------------------------------------
   14. Typing cursor (hero tagline)
   -------------------------------------------------------------------------- */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--primary);
  vertical-align: middle;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}

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

/* --------------------------------------------------------------------------
   15. Accessibility – Respect prefers-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;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}