/* ==========================================================================
   hero.css — Fullscreen video hero + scroll-triggered nav
   ========================================================================== */

/* === Hero Section === */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 500px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
}

/*
 * Bottom gradient — fades #141414 at the bottom up to transparent at 50%,
 * blending the hero into the page content below.
 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, #141414 0%, transparent 50%);
  z-index: 2;
  pointer-events: none;
}

/*
 * Vignette — radial gradient that fades the blurred video edges smoothly
 * into the page background, replacing the hard blur-edge artifact with a
 * soft atmospheric dissolve.
 */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 75% 75% at 50% 50%,
    transparent 30%,
    rgba(20, 20, 20, 0.6) 65%,
    var(--color-bg) 100%
  );
  z-index: 1;
  pointer-events: none;
}

/* === Background Video === */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  /*
   * blur(60px)      — strong atmospheric gaussian blur
   * contrast(0.845) — maps pure black (0,0,0) → ~rgb(20,20,20) = #141414,
   *                   seamlessly matching the page background
   */
  filter: blur(76px) contrast(0.845);
  /* Scale up to hide blur edge artifacts */
  transform: scale(1.12);
  pointer-events: none;
}

/* === DUOTONE (commented out — remove comment to re-enable) ===
.hero-video {
  filter: blur(60px) contrast(0.845) grayscale(1);
}
.hero-duotone-shadow {
  position: absolute;
  inset: 0;
  background: var(--color-blue);
  mix-blend-mode: saturation;
  opacity: 0.7;
  z-index: 1;
  pointer-events: none;
}
.hero-duotone-highlight {
  position: absolute;
  inset: 0;
  background: var(--color-accent);
  mix-blend-mode: multiply;
  z-index: 1;
  pointer-events: none;
}
=== END DUOTONE === */

/* === Hero Center Logo ===
 * position: fixed + body-level DOM placement so mix-blend-mode
 * blends against the root stacking context (video, grid images, etc.)
 * will-change intentionally removed — it promotes to a GPU compositing
 * layer before blending, which breaks mix-blend-mode in some browsers.
 * ====================================================================== */
.hero-logo-wrap {
  position: fixed;
  top: 50%;
  left: 50%;
  /* JS updates transform: translate(-50%,-50%) scale(N) */
  transform: translate(-50%, -50%);
  z-index: 150;
  pointer-events: none;
  mix-blend-mode: difference;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === Hero Tagline (below logo, separate from blend-mode wrapper) === */
.hero-tagline {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: clamp(46px, 6.5vw, 78px);
  z-index: 150;
  pointer-events: none;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
  line-height: 1.55;
  max-width: min(560px, 80vw);
  white-space: nowrap;
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.4)) drop-shadow(0 2px 14px rgba(0,0,0,0.25));
}

.hero-cycle-word {
  display: inline;
  white-space: nowrap;
  color: var(--color-accent);
  transition: opacity 0.25s var(--ease);
}

.hero-cycle-word.is-changing {
  opacity: 0;
}

.hero-logo-img {
  display: block;
  width: clamp(220px, 32vw, 480px);
  height: auto;
  filter: brightness(0) invert(1);
}

/* === Scroll Nav (fixed, slides in from top) === */
.scroll-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: var(--header-height, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  mix-blend-mode: normal;
  /* Hidden by default — opacity only so mix-blend-mode works once visible */
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.scroll-nav.is-visible {
  opacity: 1;
  pointer-events: all;
}

/* === Scroll Nav — Left (Logo) === */
.scroll-nav__left {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.scroll-nav__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.scroll-nav__logo img {
  height: 26px;
  width: auto;
  display: block;
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.4)) drop-shadow(0 2px 14px rgba(0,0,0,0.25));
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-nav__logo:hover img {
  opacity: 0.7;
}

/* === Scroll Nav — Right (Burger) === */
.scroll-nav__right {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.scroll-nav__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5.5px;
  width: 36px;
  height: 36px;
  padding: 0;
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
  border-radius: 4px;
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.4)) drop-shadow(0 2px 14px rgba(0,0,0,0.25));
}

.scroll-nav__burger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.burger-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 1px;
  transform-origin: center;
  transition:
    transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Open state: top + bottom rotate to X, middle fades */
.scroll-nav__burger.is-open .burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--color-accent);
}

.scroll-nav__burger.is-open .burger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.scroll-nav__burger.is-open .burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--color-accent);
}

/* === Responsive — Tablet === */
@media (max-width: 1024px) {
  .scroll-nav {
    padding: 0 16px;
  }
}

/* === Responsive — Mobile === */
@media (max-width: 768px) {
  .scroll-nav {
    padding: 0 12px;
  }

  .hero-logo-img {
    width: clamp(140px, 48vw, 260px);
  }

  .hero-tagline {
    font-size: 0.875rem;
    max-width: 88vw;
    white-space: normal;
  }
}

/* === Hero Scroll CTA === */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  pointer-events: none;
}

.hero-scroll__label {
  font-family: var(--font-heading);
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-align: center;
  color: rgba(255, 255, 255, 0.35);
}

.hero-scroll__line {
  position: relative;
  width: 1px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.hero-scroll__line::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 1px;
  height: 100%;
  background: var(--color-accent);
  animation: heroScrollDot 1.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes heroScrollDot {
  0%   { top: 100%; }
  100% { top: -100%; }
}