/* ─── Keyframes ─── */

@keyframes door-open-left {
  from {
    transform: translateX(0) skewY(0deg);
    opacity: .95;
  }
  to {
    transform: translateX(-74%) skewY(-1.8deg);
    opacity: .08;
  }
}

@keyframes door-open-right {
  from {
    transform: translateX(0) skewY(0deg);
    opacity: .95;
  }
  to {
    transform: translateX(74%) skewY(1.8deg);
    opacity: .08;
  }
}

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

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes drawer-left {
  from { transform: scaleX(1); }
  to { transform: scaleX(0); }
}

@keyframes pulse-soft {
  0%, 100% { opacity: .6; }
  50% { opacity: 1; }
}

/* ─── 3D Perspective Animations ─── */

@keyframes float-3d {
  0%, 100% { transform: translateY(0) rotateX(0deg); }
  50% { transform: translateY(-6px) rotateX(1deg); }
}

@keyframes depth-pulse {
  0%, 100% { box-shadow: var(--shadow-card); }
  50% { box-shadow: var(--depth-shadow); }
}

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

@keyframes card-float {
  0%, 100% { transform: translateY(0) rotateX(0deg); box-shadow: var(--shadow-card); }
  50% { transform: translateY(-4px) rotateX(1deg); box-shadow: var(--depth-shadow); }
}

@keyframes depth-glow {
  0%, 100% { box-shadow: var(--shadow-card); }
  50% { box-shadow: var(--glow-brand); }
}

@keyframes parallax-3d {
  0% { transform: translateZ(0) scale(1); }
  100% { transform: translateZ(-20px) scale(1.02); }
}

/* ─── 3D Reveal System ─── */

[data-reveal="3d"] {
  opacity: 0;
  transform: translateY(30px) rotateX(5deg);
  transform-origin: top center;
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-emphasized);
}

[data-reveal="3d"].is-visible {
  opacity: 1;
  transform: translateY(0) rotateX(0deg);
}

[data-reveal="3d-left"] {
  opacity: 0;
  transform: translateX(-40px) rotateY(5deg);
  transform-origin: left center;
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-emphasized);
}

[data-reveal="3d-left"].is-visible {
  opacity: 1;
  transform: translateX(0) rotateY(0deg);
}

[data-reveal="3d-right"] {
  opacity: 0;
  transform: translateX(40px) rotateY(-5deg);
  transform-origin: right center;
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-emphasized);
}

[data-reveal="3d-right"].is-visible {
  opacity: 1;
  transform: translateX(0) rotateY(0deg);
}

[data-reveal="3d-scale"] {
  opacity: 0;
  transform: scale(.92) rotateX(3deg);
  transform-origin: center center;
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-emphasized);
}

[data-reveal="3d-scale"].is-visible {
  opacity: 1;
  transform: scale(1) rotateX(0deg);
}

/* ─── Scroll reveal system ─── */

[data-reveal] {
  opacity: 0;
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-emphasized);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

[data-reveal]:not(.is-visible) {
  transform: translateY(var(--reveal-y)) scale(1);
}

[data-reveal="left"]:not(.is-visible) {
  transform: translateX(-30px);
}

[data-reveal="right"]:not(.is-visible) {
  transform: translateX(30px);
}

[data-reveal="scale"]:not(.is-visible) {
  transform: scale(var(--reveal-scale));
}

[data-reveal="door"] {
  position: relative;
  overflow: hidden;
}

[data-reveal="door"]::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: var(--color-surface);
  transform-origin: left center;
  transition: transform var(--duration-reveal) var(--ease-emphasized);
}

[data-reveal="door"].is-visible::before {
  transform: translateX(104%);
}

[data-reveal="door-right"] {
  position: relative;
  overflow: hidden;
}

[data-reveal="door-right"]::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: var(--color-surface);
  transform-origin: right center;
  transition: transform var(--duration-reveal) var(--ease-emphasized);
}

[data-reveal="door-right"].is-visible::before {
  transform: translateX(-104%);
}

/* ─── Stagger children ─── */

[data-stagger] > * {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-emphasized);
}

[data-stagger].is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

[data-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-stagger].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-stagger].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-stagger].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-stagger].is-visible > *:nth-child(5) { transition-delay: 320ms; }
[data-stagger].is-visible > *:nth-child(6) { transition-delay: 400ms; }
[data-stagger].is-visible > *:nth-child(7) { transition-delay: 480ms; }
[data-stagger].is-visible > *:nth-child(8) { transition-delay: 560ms; }

/* ─── Parallax ─── */

[data-parallax] {
  will-change: transform;
}

/* ─── Scroll progress indicator ─── */

[data-scroll-progress] {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 150;
  width: 100%;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

[data-scroll-progress]::after {
  content: "";
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-strong));
  transition: width .05s linear;
}

/* ─── Legacy class support ─── */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-emphasized);
}

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

.door-reveal {
  position: relative;
  overflow: hidden;
}

.door-reveal::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--color-surface);
  transform-origin: left center;
  transition: transform var(--duration-reveal) var(--ease-emphasized);
}

.door-reveal.is-visible::before {
  transform: translateX(104%);
}

/* ─── Loading shimmer ─── */

.shimmer {
  background: linear-gradient(
    90deg,
    var(--color-surface-strong) 25%,
    var(--color-surface-alt) 50%,
    var(--color-surface-strong) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s infinite;
}

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

/* ─── Reduced motion ─── */

@media (prefers-reduced-motion: reduce) {
  @keyframes door-open-left {
    to { opacity: .08; transform: none; }
  }
  @keyframes door-open-right {
    to { opacity: .08; transform: none; }
  }

  .door-frame::before,
  .door-frame::after {
    animation: door-open-left 1ms both, door-open-right 1ms both;
  }
}

.lum360-glow {
  display: inline-block;
  background: linear-gradient(90deg, #d4a017, #f9e076, #d4a017, #f9e076, #d4a017);
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: lum360-shine 3s ease-in-out infinite;
  font-weight: 700;
}

@keyframes lum360-shine {
  0%, 100% { background-position: 0% 50%; opacity: 0.7; }
  50% { background-position: 100% 50%; opacity: 1; }
}