/* =====================================================================
   motion.css — Espectro motion system
   Calibrated for Stripe/Linear feel: subtle, hardware-accelerated,
   respects prefers-reduced-motion.
   ===================================================================== */

:root {
  --motion-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --motion-ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --motion-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --motion-fast: 180ms;
  --motion-base: 320ms;
  --motion-slow: 520ms;
}

/* --------- Scroll reveal (IntersectionObserver driven) --------- */
.reveal {
  opacity: 0;
  transform: translate3d(0, 14px, 0);
  transition:
    opacity var(--motion-slow) var(--motion-ease-out),
    transform var(--motion-slow) var(--motion-ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}
.reveal-left { transform: translate3d(-18px, 0, 0); }
.reveal-right { transform: translate3d(18px, 0, 0); }
.reveal-scale {
  transform: translate3d(0, 0, 0) scale(0.96);
}
.reveal-scale.is-visible {
  transform: translate3d(0, 0, 0) scale(1);
}

/* Stagger delays applied by data-reveal-delay */
.reveal[data-reveal-delay="1"] { transition-delay: 60ms; }
.reveal[data-reveal-delay="2"] { transition-delay: 120ms; }
.reveal[data-reveal-delay="3"] { transition-delay: 180ms; }
.reveal[data-reveal-delay="4"] { transition-delay: 240ms; }
.reveal[data-reveal-delay="5"] { transition-delay: 300ms; }
.reveal[data-reveal-delay="6"] { transition-delay: 360ms; }
.reveal[data-reveal-delay="7"] { transition-delay: 420ms; }
.reveal[data-reveal-delay="8"] { transition-delay: 480ms; }

/* --------- Page enter (runs once on load) --------- */
@keyframes motion-page-in {
  from { opacity: 0; transform: translate3d(0, 8px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}
.page-enter {
  animation: motion-page-in var(--motion-base) var(--motion-ease-out) both;
}
.page-enter-delay-1 { animation-delay: 80ms; }
.page-enter-delay-2 { animation-delay: 160ms; }
.page-enter-delay-3 { animation-delay: 240ms; }

/* --------- Idle float (logo/ghost) --------- */
@keyframes motion-float-idle {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -4px, 0); }
}
.float-idle {
  animation: motion-float-idle 4.5s ease-in-out infinite;
  will-change: transform;
}

/* --------- Hover lift (cards, tiles) --------- */
.hover-lift {
  transition:
    transform var(--motion-fast) var(--motion-ease-out),
    box-shadow var(--motion-fast) var(--motion-ease-out),
    border-color var(--motion-fast) var(--motion-ease-out);
  will-change: transform;
}
.hover-lift:hover {
  transform: translate3d(0, -3px, 0);
}

/* --------- Tilt hover (subtle 3D feel) --------- */
.tilt-hover {
  transition: transform var(--motion-base) var(--motion-ease-out);
  transform-style: preserve-3d;
  will-change: transform;
}
.tilt-hover:hover {
  transform: perspective(900px) rotateX(2deg) rotateY(-2deg) translateZ(0);
}

/* --------- Button shimmer (primary CTAs) --------- */
.btn-shimmer {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.btn-shimmer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    110deg,
    transparent 30%,
    rgba(255, 255, 255, 0.22) 50%,
    transparent 70%
  );
  transform: translateX(-120%);
  transition: transform 700ms var(--motion-ease-out);
  pointer-events: none;
  z-index: 1;
}
.btn-shimmer:hover::after {
  transform: translateX(120%);
}

/* --------- Button press --------- */
.btn-press {
  transition:
    transform var(--motion-fast) var(--motion-ease-out),
    filter var(--motion-fast) var(--motion-ease-out),
    box-shadow var(--motion-fast) var(--motion-ease-out);
}
.btn-press:hover { transform: translate3d(0, -1px, 0); }
.btn-press:active { transform: translate3d(0, 1px, 0); filter: brightness(0.95); }

/* --------- Link underline draw --------- */
.link-draw {
  position: relative;
  display: inline-block;
}
.link-draw::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 1px;
  width: 100%;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--motion-base) var(--motion-ease-out);
}
.link-draw:hover::after {
  transform: scaleX(1);
}

/* --------- Input focus ring animation --------- */
.input-animated {
  transition:
    border-color var(--motion-fast) var(--motion-ease-out),
    box-shadow var(--motion-fast) var(--motion-ease-out),
    background-color var(--motion-fast) var(--motion-ease-out);
}

/* --------- Error shake --------- */
@keyframes motion-shake {
  0%, 100% { transform: translate3d(0, 0, 0); }
  20%, 60% { transform: translate3d(-5px, 0, 0); }
  40%, 80% { transform: translate3d(5px, 0, 0); }
}
.shake {
  animation: motion-shake 380ms var(--motion-ease-out);
}

/* --------- Spinner (inline) --------- */
@keyframes motion-spin {
  to { transform: rotate(360deg); }
}
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: motion-spin 720ms linear infinite;
  vertical-align: -2px;
}

/* --------- Pulse-on-focus (search) --------- */
@keyframes motion-focus-pulse {
  0% { box-shadow: 0 0 0 0 currentColor; }
  100% { box-shadow: 0 0 0 8px transparent; }
}
.focus-pulse:focus-visible {
  animation: motion-focus-pulse 520ms var(--motion-ease-out);
}

/* --------- Glow breathing (ambient accent) --------- */
@keyframes motion-breathe {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 0.95; }
}
.breathe {
  animation: motion-breathe 3.2s ease-in-out infinite;
}

/* --------- Tab spring (active tab underline) --------- */
.tab-spring {
  transition: transform var(--motion-base) var(--motion-ease-spring);
}

/* --------- Gradient shift (hero accents) --------- */
@keyframes motion-gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.gradient-shift {
  background-size: 200% 200%;
  animation: motion-gradient-shift 8s ease-in-out infinite;
}

/* --------- Count-up shimmer for stats --------- */
@keyframes motion-number-in {
  from { opacity: 0; transform: translate3d(0, 6px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}
.number-in {
  animation: motion-number-in 420ms var(--motion-ease-out) both;
}

/* --------- Smooth scroll (global) --------- */
/* Lenis owns smooth-scroll at runtime; keep native fallback for no-JS. */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-smooth iframe { pointer-events: none; }
html:not(.lenis) {
  scroll-behavior: smooth;
}

/* --------- Text reveal on scroll (word-by-word lighting) --------- */
.text-reveal-scroll {
  /* container; words are wrapped by motion.js at boot */
}
.text-reveal-scroll .word {
  display: inline-block;
  color: inherit;
  opacity: 0.5;
  transform: translate3d(0, 6px, 0);
  transition:
    opacity 320ms var(--motion-ease-out),
    transform 320ms var(--motion-ease-out),
    text-shadow 320ms var(--motion-ease-out);
  will-change: opacity, transform;
}
.text-reveal-scroll .word.lit {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  text-shadow: 0 0 24px rgba(140, 240, 180, 0.12);
}
/* Preserve whitespace between wrapped words */
.text-reveal-scroll .space {
  display: inline-block;
  width: 0.28em;
}

/* --------- Stacked parallax cards (scroll-driven) --------- */
.stack-section {
  position: relative;
}
.stack-section .stack-card {
  position: sticky;
  transform-origin: center top;
  transition:
    transform 380ms var(--motion-ease-out),
    opacity 380ms var(--motion-ease-out),
    filter 380ms var(--motion-ease-out);
  will-change: transform, opacity, filter;
}
/* Mobile: disable sticky stack (cards just flow) */
@media (max-width: 767px) {
  .stack-section .stack-card {
    position: relative;
    top: auto !important;
    transform: none !important;
    opacity: 1 !important;
    filter: none !important;
  }
}

/* --------- View Transitions API (cross-document nav) --------- */
@view-transition {
  navigation: auto;
}
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 260ms;
  animation-timing-function: var(--motion-ease-out);
}
::view-transition-old(root) {
  animation-name: motion-vt-fade-out;
}
::view-transition-new(root) {
  animation-name: motion-vt-fade-in;
}
@keyframes motion-vt-fade-out {
  to { opacity: 0; transform: translate3d(0, -4px, 0); }
}
@keyframes motion-vt-fade-in {
  from { opacity: 0; transform: translate3d(0, 6px, 0); }
}

/* --------- Scroll progress bar --------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  transform-origin: left center;
  transform: scaleX(0);
  /* Match site's --status-success (the only accent green in the UI). */
  background: #ffffff;
  z-index: 9999;
  pointer-events: none;
  will-change: transform;
  transition: opacity 220ms var(--motion-ease-out);
}

/* --------- Navbar blur-on-scroll --------- */
.nav.is-scrolled,
nav.nav.is-scrolled,
.top-nav.is-scrolled {
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  background: rgba(11, 15, 13, 0.72) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition:
    background 220ms var(--motion-ease-out),
    backdrop-filter 220ms var(--motion-ease-out),
    border-color 220ms var(--motion-ease-out);
}

/* --------- Lazy image fade-in --------- */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 420ms var(--motion-ease-out);
}
img[loading="lazy"].loaded,
img[loading="lazy"][data-loaded="true"] {
  opacity: 1;
}

/* --------- Custom scrollbar (webkit) --------- */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  border: 2px solid transparent;
  background-clip: content-box;
  transition: background 180ms var(--motion-ease-out);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.18);
  background-clip: content-box;
}

/* --------- Parallax container (mouse-follow) --------- */
.parallax-host {
  transform-style: preserve-3d;
  transition: transform 320ms var(--motion-ease-out);
  will-change: transform;
}

/* --------- Reduced motion: disable all animation/transition --------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  html { scroll-behavior: auto; }
}