/* ==========================================================================
   SBR MOBILITY × DONGFENG — LIGHT AUTOMOTIVE ANIMATIONS & MOTION SYSTEM
   Restrained, Editorial, Smooth & High-Performance (Porsche / Tesla inspired)
   ========================================================================== */

/* --------------------------------------------------------------------------
   01. Page Preloader & Smooth Light Dissolve
   -------------------------------------------------------------------------- */
.lqd-preloader-dissolve {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--background);
  z-index: 99999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.5s ease;
}

.lqd-preloader-dissolve.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-emblem {
  width: 70px;
  height: 70px;
  animation: lightPulse 1.8s ease-in-out infinite;
}

@keyframes lightPulse {
  0%, 100% {
    transform: scale(0.96);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.04);
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   02. Scroll-Trigger Staggered Reveal Animations
   -------------------------------------------------------------------------- */
.reveal-init {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-init.is-in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-left.is-in-view {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-right.is-in-view {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger Delays */
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }

/* --------------------------------------------------------------------------
   03. Modal Fade & Scale
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-backdrop.is-active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: #FFFFFF;
  border-radius: 2rem;
  border: 1px solid var(--border);
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
  max-width: 600px;
  width: 100%;
  padding: 2.5rem;
  position: relative;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.is-active .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--muted-background);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--primary);
  color: #FFFFFF;
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(16px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --------------------------------------------------------------------------
   04. Accessibility 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;
  }
}