/* Site-wide interactive motion — use with js/interactive-motion.js */

:root {
  --motion-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --motion-spring: cubic-bezier(0.22, 0.61, 0.36, 1);
  --tilt-perspective: 900px;
}

/* Scroll progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 10001;
  pointer-events: none;
  background: rgba(var(--rgb-deep), 0.08);
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-teal-light), var(--color-cta));
  box-shadow: 0 0 12px rgba(var(--rgb-gold), 0.5);
  transform: translateZ(0);
}

/* Custom cursor glow (desktop) */
.motion-cursor {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10002;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease;
}

body.motion-ui.is-cursor-ready .motion-cursor {
  opacity: 1;
}

.motion-cursor__ring {
  position: absolute;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 2px solid rgba(var(--rgb-gold), 0.45);
  border-radius: 50%;
  transition:
    width 0.35s var(--motion-ease-out),
    height 0.35s var(--motion-ease-out),
    margin 0.35s var(--motion-ease-out),
    border-color 0.25s ease,
    background 0.25s ease;
}

.motion-cursor__dot {
  position: absolute;
  width: 6px;
  height: 6px;
  margin: -3px 0 0 -3px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(var(--rgb-gold), 0.8);
}

body.motion-ui.is-cursor-hover .motion-cursor__ring {
  width: 56px;
  height: 56px;
  margin: -28px 0 0 -28px;
  border-color: rgba(var(--rgb-cta), 0.55);
  background: rgba(var(--rgb-gold), 0.08);
}

body.motion-ui.is-cursor-down .motion-cursor__ring {
  transform: scale(0.85);
}

/* Page enter */
body.motion-ui.is-loading #main {
  opacity: 0;
  transform: translateY(12px);
}

body.motion-ui.is-loaded #main {
  animation: pageEnter 1.1s var(--motion-ease-out) forwards;
}

@keyframes pageEnter {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(1.008);
    filter: blur(8px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

/* 3D tilt cards */
.tilt-interactive {
  transform-style: preserve-3d;
  will-change: transform;
  transition:
    transform 0.55s var(--motion-ease-out),
    box-shadow 0.55s var(--motion-ease-out);
}

.tilt-interactive.is-tilt-active {
  transition:
    transform 0.12s linear,
    box-shadow 0.45s var(--motion-ease-out);
}

.tilt-interactive__shine {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(
    circle at var(--shine-x, 50%) var(--shine-y, 50%),
    rgba(255, 255, 255, 0.35) 0%,
    transparent 55%
  );
  transition: opacity 0.45s var(--motion-ease-out);
  z-index: 2;
}

.tilt-interactive:hover .tilt-interactive__shine,
.tilt-interactive.is-tilt-active .tilt-interactive__shine {
  opacity: 1;
}

/* Magnetic buttons */
.magnetic-wrap {
  display: inline-block;
  position: relative;
}

.magnetic-wrap > .btn,
.magnetic-wrap > a.btn {
  position: relative;
  z-index: 1;
}

/* Ripple */
.btn-ripple-host {
  position: relative;
  overflow: hidden;
}

.btn-ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  background: rgba(255, 255, 255, 0.45);
  animation: rippleOut 0.85s var(--motion-ease-out) forwards;
  pointer-events: none;
}

@keyframes rippleOut {
  to {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* Hero mouse parallax layer */
.page-hero,
.system-hero {
  position: relative;
  overflow: hidden;
}

.hero__aurora {
  transition: transform 0.35s var(--motion-ease-out);
}

.hero__orb {
  transition: transform 0.5s var(--motion-ease-out);
}

/* Enhanced reveals */
body.motion-ui .reveal.is-visible,
body.motion-ui .reveal-left.is-visible,
body.motion-ui .reveal-right.is-visible {
  transition: none;
  animation: revealInteractive 1s var(--motion-ease-out) forwards;
}

body.motion-ui .reveal.reveal--sharp.is-visible {
  transition: none;
  animation: revealSharp 0.85s var(--motion-ease-out) forwards;
  filter: none;
  transform: none;
}

@keyframes revealSharp {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes revealInteractive {
  from {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

body.motion-ui .stagger-group.is-visible .stagger-item {
  transition: none;
  animation: staggerPop 0.85s var(--motion-ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 0.09s);
}

@keyframes staggerPop {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.97);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

/* Interactive badges & tags */
body.motion-ui .badge,
body.motion-ui .tag-list li {
  transition:
    transform 0.3s var(--motion-spring),
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}

body.motion-ui .badge:hover,
body.motion-ui .tag-list li:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 20px rgba(var(--rgb-gold), 0.2);
}

/* Nav link underline sweep */
body.motion-ui .main-nav a:not(.btn) {
  position: relative;
}

body.motion-ui .main-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--motion-ease-out);
}

body.motion-ui .main-nav a:not(.btn):hover::after,
body.motion-ui .main-nav a:not(.btn)[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Ambient particles on dark sections */
.section--dark,
.page-hero,
.hero,
.system-hero,
.mini-me-spotlight {
  position: relative;
}

.motion-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.motion-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(var(--rgb-gold), 0.35);
  animation: particleFloat 12s ease-in-out infinite;
}

.motion-particle:nth-child(odd) {
  background: rgba(255, 255, 255, 0.2);
  animation-duration: 16s;
}

@keyframes particleFloat {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.3;
  }
  50% {
    transform: translate(20px, -30px) scale(1.4);
    opacity: 0.7;
  }
}

/* Section header line draw */
body.motion-ui .section-header.is-visible h2::after {
  content: "";
  display: block;
  width: 4rem;
  height: 3px;
  margin: var(--space-sm) auto 0;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  animation: drawLineCenter 0.8s var(--motion-ease-out) forwards;
  transform: scaleX(0);
  transform-origin: center;
}

@keyframes drawLineCenter {
  to {
    transform: scaleX(1);
  }
}

/* Logo subtle pulse on hover */
body.motion-ui .logo {
  transition: transform 0.4s var(--motion-spring), filter 0.3s ease;
}

body.motion-ui .logo:hover {
  transform: scale(1.03);
  filter: drop-shadow(0 4px 12px rgba(var(--rgb-gold), 0.25));
}

/* Focus still visible without custom cursor */
body.motion-ui :focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .scroll-progress,
  .motion-cursor,
  .motion-particles {
    display: none !important;
  }

  body.motion-ui.is-loading #main {
    opacity: 1;
    transform: none;
  }

  body.motion-ui.is-loaded #main {
    animation: none;
  }

  .tilt-interactive,
  .tilt-interactive__shine {
    transform: none !important;
  }

  body.motion-ui .reveal.is-visible,
  body.motion-ui .reveal.reveal--sharp.is-visible,
  body.motion-ui .stagger-group.is-visible .stagger-item {
    animation: none !important;
  }
}

@media (hover: none), (pointer: coarse) {
  .motion-cursor {
    display: none !important;
  }
}