/* ---------------------------------------------------------------
   layout.css — header, hero, marquee, footer
--------------------------------------------------------------- */

/* ---- Header ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  height: var(--header-height);
  display: flex;
  align-items: center;
  mix-blend-mode: difference;
  color: #fff;
}

.site-header__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gutter);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.main-nav ul {
  display: flex;
  gap: clamp(16px, 2vw, 32px);
}

.main-nav a {
  font-family: var(--font-mono);
  font-size: var(--size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  opacity: 0.85;
  transition: opacity var(--dur-fast) ease;
}

.main-nav a:hover {
  opacity: 1;
}

.main-nav .mono {
  opacity: 0.6;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.6vw, 24px);
  font-size: var(--size-xs);
}

.lang-toggle,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.lang-toggle span[data-lang-option] {
  opacity: 0.5;
  transition: opacity var(--dur-fast) ease;
}

.lang-toggle span[data-lang-option].is-active {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.theme-toggle__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  display: inline-block;
}

.menu-toggle {
  display: none;
  font-size: var(--size-xs);
  letter-spacing: 0.08em;
}

.mobile-nav {
  display: none;
}

@media (max-width: 860px) {
  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-ink);
    color: var(--color-bg);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) ease;
    z-index: 400;
  }

  .mobile-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav ul {
    padding: 24px var(--margin) 32px;
  }

  .mobile-nav a {
    display: flex;
    gap: 10px;
    padding: 14px 0;
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 1rem;
    border-bottom: 1px solid rgba(242, 240, 235, 0.15);
  }
}

/* ---- Scroll progress ---- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 600;
  background: transparent;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  transform-origin: left;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero__inner {
  width: 100%;
}

.hero__name {
  font-size: var(--size-hero);
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hero__line {
  overflow: hidden;
  display: block;
}

.hero__word {
  display: block;
}

.hero__meta {
  margin-top: clamp(28px, 6vw, 56px);
  padding-top: 20px;
  border-top: 1px solid var(--color-line);
}

.hero__meta-item {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hero__meta-label {
  font-size: var(--size-xs);
  color: var(--color-ink-muted);
}

.hero__meta-value {
  font-size: var(--size-md);
  font-weight: 600;
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

.hero__manifesto {
  margin-top: clamp(24px, 5vw, 40px);
  max-width: 42ch;
  font-size: var(--size-lg);
  color: var(--color-ink-muted);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.hero__scroll {
  position: absolute;
  bottom: clamp(20px, 4vh, 40px);
  left: var(--margin);
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero__scroll-line {
  width: 1px;
  height: 46px;
  background: var(--color-ink-muted);
  display: block;
  transform-origin: top;
}

.hero__scroll-label {
  font-size: var(--size-xs);
  color: var(--color-ink-muted);
  writing-mode: vertical-rl;
}

@media (max-width: 640px) {
  .hero__meta-item {
    grid-column: span 12;
  }

  .hero__meta {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
}

/* ---- Marquee ---- */
.marquee {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding-block: 18px;
  display: flex;
  white-space: nowrap;
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2vw, 1.3rem);
  letter-spacing: 0.02em;
  padding-inline: 10px;
  flex-shrink: 0;
  animation: marquee 32s linear infinite;
}

.marquee__track span:nth-child(even) {
  color: var(--color-accent);
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee__track {
    animation: none;
  }
  .marquee {
    overflow-x: auto;
  }
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding-block: 28px;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  font-size: var(--size-xs);
  color: var(--color-ink-muted);
}

.back-to-top {
  color: var(--color-ink);
  transition: color var(--dur-fast) ease;
}

.back-to-top:hover {
  color: var(--color-accent);
}