/* ============================================
   Cutting-Edge Features — 2026
   View Transitions · Scroll-Driven · Liquid Glass · OKLCH
   ============================================ */

/* ---- OKLCH Color System ---- */
:root {
  --accent-oklch: oklch(58% 0.22 277);
  --accent-secondary-oklch: oklch(72% 0.14 210);
  --accent-tertiary-oklch: oklch(62% 0.25 305);
  --bg-deep-oklch: oklch(8% 0.04 285);
  --glass-tint: oklch(100% 0 0 / 0.06);
  --glass-border: oklch(100% 0 0 / 0.14);
  --glass-highlight: oklch(100% 0 0 / 0.22);
}

/* ---- View Transitions API ---- */
@view-transition {
  navigation: auto;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.45s;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

::view-transition-old(root) {
  animation-name: vt-fade-out;
}

::view-transition-new(root) {
  animation-name: vt-fade-in;
}

::view-transition-old(hero-vt),
::view-transition-new(hero-vt) {
  animation-duration: 0.5s;
  mix-blend-mode: normal;
}

@keyframes vt-fade-out {
  from { opacity: 1; transform: scale(1); filter: blur(0); }
  to { opacity: 0; transform: scale(0.97); filter: blur(4px); }
}

@keyframes vt-fade-in {
  from { opacity: 0; transform: scale(1.02); filter: blur(4px); }
  to { opacity: 1; transform: scale(1); filter: blur(0); }
}

.hero { view-transition-name: hero-vt; }
.section--innovations { view-transition-name: innovations-vt; }

/* ---- Scroll Progress (scroll-driven) ---- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 300;
  pointer-events: none;
  background: transparent;
}

.scroll-progress__bar {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--accent-oklch),
    var(--accent-secondary-oklch),
    var(--accent-tertiary-oklch)
  );
  transform-origin: left center;
  transform: scaleX(0);
  box-shadow: 0 0 12px var(--accent-glow);
}

@supports (animation-timeline: scroll()) {
  .scroll-progress__bar {
    animation: scroll-progress-grow linear forwards;
    animation-timeline: scroll(root block);
  }
}

@keyframes scroll-progress-grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@supports (animation-timeline: view()) {
  [data-scroll-fade] {
    animation: scroll-fade-up linear both;
    animation-timeline: view();
    animation-range: entry 8% cover 35%;
  }

  [data-scroll-scale] {
    animation: scroll-scale-in linear both;
    animation-timeline: view();
    animation-range: entry 5% cover 40%;
  }

  [data-scroll-slide-left] {
    animation: scroll-slide-left linear both;
    animation-timeline: view();
    animation-range: entry 10% cover 45%;
  }

  [data-scroll-slide-right] {
    animation: scroll-slide-right linear both;
    animation-timeline: view();
    animation-range: entry 10% cover 45%;
  }

  .hero__content {
    animation: hero-scroll-out linear both;
    animation-timeline: view();
    animation-range: exit 0% exit 50%;
  }

  .hero__visual {
    animation: hero-visual-parallax linear both;
    animation-timeline: view();
    animation-range: exit 0% exit 60%;
  }
}

@supports not (animation-timeline: view()) {
  [data-scroll-fade],
  [data-scroll-scale],
  [data-scroll-slide-left],
  [data-scroll-slide-right] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  [data-scroll-fade].revealed,
  [data-scroll-scale].revealed,
  [data-scroll-slide-left].revealed,
  [data-scroll-slide-right].revealed {
    opacity: 1;
    transform: none;
  }
}

@keyframes scroll-fade-up {
  from { opacity: 0; transform: translateY(60px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scroll-scale-in {
  from { opacity: 0; transform: scale(0.85); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes scroll-slide-left {
  from { opacity: 0; transform: translateX(-80px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scroll-slide-right {
  from { opacity: 0; transform: translateX(80px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes hero-scroll-out {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-80px); }
}

@keyframes hero-visual-parallax {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0.3; transform: translateY(120px) scale(0.9); }
}

/* ---- Liquid Glass ---- */
.liquid-glass {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  isolation: isolate;
  background: var(--glass-tint);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(40px) saturate(200%) brightness(1.08);
  -webkit-backdrop-filter: blur(40px) saturate(200%) brightness(1.08);
  box-shadow:
    inset 0 1px 1px var(--glass-highlight),
    inset 0 -1px 1px oklch(100% 0 0 / 0.04),
    0 24px 64px oklch(0% 0 0 / 0.45),
    0 0 0 0.5px oklch(100% 0 0 / 0.06);
}

.liquid-glass--panel {
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.liquid-glass--visual {
  width: 100%;
  height: 100%;
}

.liquid-glass__edge {
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    oklch(100% 0 0 / 0.55),
    transparent
  );
  z-index: 3;
  pointer-events: none;
}

.liquid-glass__shine {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    oklch(100% 0 0 / 0.18) 0%,
    oklch(100% 0 0 / 0.04) 40%,
    transparent 70%
  );
  pointer-events: none;
  z-index: 2;
  transform: translate(calc(var(--shine-x, 50%) - 50%), calc(var(--shine-y, 30%) - 50%));
  transition: opacity 0.3s;
  opacity: 0.8;
}

.liquid-glass__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
  animation: liquid-blob-drift calc(12s / var(--anim-speed)) ease-in-out infinite alternate;
}

.liquid-glass__blob--1 {
  width: 60%;
  height: 60%;
  top: -20%;
  left: -10%;
  background: var(--accent-oklch);
}

.liquid-glass__blob--2 {
  width: 50%;
  height: 50%;
  bottom: -15%;
  right: -10%;
  background: var(--accent-secondary-oklch);
  animation-delay: -4s;
}

@keyframes liquid-blob-drift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(8%, 6%) scale(1.1); }
}

.liquid-glass__content {
  position: relative;
  z-index: 1;
}

.liquid-glass__refraction {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.4;
  background:
    radial-gradient(ellipse 80% 50% at 30% 20%, oklch(100% 0 0 / 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 70% 80%, var(--accent-oklch / 0.15), transparent);
  mix-blend-mode: overlay;
}

.liquid-glass:hover .liquid-glass__shine {
  opacity: 1;
}

.hero__3d-wrap.liquid-glass {
  background: oklch(8% 0.04 285 / 0.3);
}

.hero__3d-wrap #hero-3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
}

.hero__3d-wrap .hero__orbit {
  z-index: 1;
}

.hero__3d-wrap .liquid-glass__shine,
.hero__3d-wrap .liquid-glass__refraction,
.hero__3d-wrap .liquid-glass__edge {
  z-index: 3;
  pointer-events: none;
}

/* iOS Safari: backdrop-filter breaks WebGL inside same container */
@media (max-width: 900px) {
  .hero__3d-wrap.liquid-glass {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(255, 255, 255, 0.04);
    isolation: auto;
  }

  .hero__3d-wrap .liquid-glass__shine,
  .hero__3d-wrap .liquid-glass__refraction {
    display: none;
  }

  .hero__float-card {
    display: none;
  }

  .aurora__blob--1,
  .aurora__blob--2,
  .aurora__blob--3 {
    width: 80vw;
    height: 80vw;
  }

  .liquid-glass__blob--1,
  .liquid-glass__blob--2 {
    width: 40%;
    height: 40%;
    left: 0;
    right: auto;
  }

  .liquid-glass__blob--2 {
    left: auto;
    right: 0;
  }

  @supports (animation-timeline: view()) {
    .hero__visual,
    .hero__content {
      animation: none !important;
      opacity: 1 !important;
      transform: none !important;
    }
  }
}

.stat.liquid-glass {
  border-radius: var(--radius-md);
}

.hero__float-card.liquid-glass {
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  backdrop-filter: blur(24px) saturate(180%);
  overflow: visible;
}

/* ---- Innovations Section ---- */
.section--innovations {
  position: relative;
}

.svg-filters {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.innovations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.innovation-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.4s;
}

.innovation-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 32px 64px oklch(0% 0 0 / 0.4);
}

.innovation-card__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  background: oklch(from var(--accent-oklch) l c h / 0.15);
  border: 1px solid oklch(from var(--accent-oklch) l c h / 0.3);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--accent-oklch);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
}

.innovation-card__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse calc(2s / var(--anim-speed)) ease-in-out infinite;
}

.innovation-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.innovation-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.innovation-card__demo {
  height: 80px;
  border-radius: var(--radius-sm);
  background: oklch(0% 0 0 / 0.25);
  border: 1px solid var(--border-glass);
  overflow: hidden;
  position: relative;
}

/* Mini demos inside innovation cards */
.innovation-demo--vt .innovation-demo__screen {
  position: absolute;
  inset: 8px;
  border-radius: 4px;
  background: var(--bg-glass);
  animation: vt-demo-switch calc(3s / var(--anim-speed)) ease-in-out infinite;
}

.innovation-demo--vt .innovation-demo__screen:nth-child(2) {
  animation-delay: -1.5s;
  background: oklch(from var(--accent-oklch) l c h / 0.2);
}

@keyframes vt-demo-switch {
  0%, 45% { opacity: 1; transform: scale(1); }
  50%, 95% { opacity: 0; transform: scale(0.95); }
  100% { opacity: 1; transform: scale(1); }
}

.innovation-demo--scroll .innovation-demo__bar {
  position: absolute;
  bottom: 8px;
  left: 8px;
  right: 8px;
  height: 4px;
  background: oklch(100% 0 0 / 0.08);
  border-radius: 100px;
  overflow: hidden;
}

.innovation-demo--scroll .innovation-demo__bar::after {
  content: '';
  display: block;
  height: 100%;
  width: 40%;
  background: linear-gradient(90deg, var(--accent-oklch), var(--accent-secondary-oklch));
  border-radius: 100px;
  animation: scroll-demo-bar calc(2s / var(--anim-speed)) ease-in-out infinite alternate;
}

@keyframes scroll-demo-bar {
  from { transform: translateX(0); }
  to { transform: translateX(150%); }
}

.innovation-demo--glass {
  background: linear-gradient(135deg, var(--accent-oklch), var(--accent-tertiary-oklch));
}

.innovation-demo--glass::before {
  content: '';
  position: absolute;
  inset: 12px 20px;
  background: var(--glass-tint);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  box-shadow: inset 0 1px 0 var(--glass-highlight);
  animation: glass-demo-float calc(3s / var(--anim-speed)) ease-in-out infinite;
}

@keyframes glass-demo-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

/* VT toast notification */
.vt-toast {
  position: fixed;
  top: calc(var(--header-h) + 1rem);
  bottom: auto;
  left: 50%;
  transform: translateX(-50%) translateY(calc(-100% - 1.5rem));
  padding: 0.75rem 1.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  backdrop-filter: blur(20px);
  z-index: 400;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s;
  pointer-events: none;
  opacity: 0;
  white-space: nowrap;
}

.vt-toast--visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.vt-toast strong {
  color: var(--accent-oklch);
  font-weight: 600;
}

.showcase.liquid-glass {
  padding: 2rem;
}

@media (max-width: 640px) {
  .vt-toast {
    left: 1rem;
    right: 1rem;
    transform: translateY(calc(-100% - 1.5rem));
    text-align: center;
    white-space: normal;
    font-size: 0.8rem;
  }

  .vt-toast--visible {
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .innovations-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-progress__bar {
    animation: none;
    transform: scaleX(var(--scroll-fallback, 0));
  }

  [data-scroll-fade],
  [data-scroll-scale],
  [data-scroll-slide-left],
  [data-scroll-slide-right],
  .hero__content,
  .hero__visual {
    animation: none !important;
  }
}