/* ==========================================================================
   layout.css — page shell, grid, sections
   ========================================================================== */

.shell { position: relative; z-index: 2; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: var(--s-7);
}
.section--tall { padding-block: var(--s-8); }
.section--flush { padding-block-start: 0; }

.section-head {
  display: grid;
  gap: var(--s-3);
  margin-bottom: var(--s-6);
  max-width: 62ch;
}

.rule {
  height: 1px;
  background: var(--border);
  border: 0;
  margin: 0;
}

/* Generic responsive columns */
.cols {
  display: grid;
  gap: var(--s-4);
}
.cols--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

/* A single, quiet ambient background for the whole page — fixed,
   consistent, and identical everywhere, hero included. No motion,
   no per-section variation, no separate 3D layer to maintain. */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 900px 600px at 50% -10%, rgba(224,162,79,0.06), transparent 60%),
    var(--bg);
}

/* Two large, soft, blurred color washes that drift very slowly — no
   particles, no lines, no cursor-tracking. The motion is barely
   perceptible on direct attention but reads as alive at a glance. */
.bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}
.bg-particles-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.bg-blob--a {
  width: 640px;
  height: 640px;
  top: -12%;
  left: 6%;
  background: radial-gradient(circle, rgba(224,162,79,0.32), transparent 70%);
  animation: blobDriftA 16s ease-in-out infinite;
}
.bg-blob--b {
  width: 720px;
  height: 720px;
  bottom: -18%;
  right: 2%;
  background: radial-gradient(circle, rgba(244,246,248,0.12), transparent 70%);
  animation: blobDriftB 20s ease-in-out infinite;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              backdrop-filter var(--t-base) var(--ease);
  border-bottom: 1px solid transparent;
}
.header.is-stuck {
  background: rgba(6, 7, 9, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
}

.header__inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
}

.brand { display: flex; align-items: center; gap: 0.7rem; min-width: 0; }
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.brand__name span { color: var(--text-dim); font-weight: 400; }

.nav { display: flex; align-items: center; gap: var(--s-4); }
.nav__list { display: flex; align-items: center; gap: var(--s-4); }
.nav__link {
  font-size: 0.92rem;
  color: var(--text-dim);
  position: relative;
  padding-block: 0.4rem;
  transition: color var(--t-fast) var(--ease);
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-base) var(--ease);
}
.nav__link:hover, .nav__link.is-active { color: var(--text); }
.nav__link:hover::after, .nav__link.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header__actions { display: flex; align-items: center; gap: var(--s-2); }

.lang-toggle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.42rem 0.6rem;
  min-width: 44px;
  text-align: center;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.lang-toggle:hover { color: var(--text); border-color: var(--border-strong); background: rgba(255,255,255,0.04); }

/* Mobile menu button */
.burger {
  display: none;
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.burger span {
  display: block;
  width: 17px; height: 1.5px;
  background: var(--text);
  position: relative;
  transition: background var(--t-fast) var(--ease);
}
.burger span::before, .burger span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 17px; height: 1.5px;
  background: var(--text);
  transition: transform var(--t-base) var(--ease);
}
.burger span::before { top: -5.5px; }
.burger span::after  { top: 5.5px; }
.burger.is-open span { background: transparent; }
.burger.is-open span::before { transform: translateY(5.5px) rotate(45deg); }
.burger.is-open span::after  { transform: translateY(-5.5px) rotate(-45deg); }

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 89;
  background: rgba(6,7,9,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: calc(var(--header-h) + var(--s-4)) var(--gutter) var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-base) var(--ease),
              transform var(--t-base) var(--ease),
              visibility var(--t-base);
}
.drawer.is-open { opacity: 1; visibility: visible; transform: none; }
.drawer__link {
  font-family: var(--font-display);
  font-size: var(--step-2);
  letter-spacing: -0.02em;
  padding-block: 0.5rem;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.drawer.is-open .drawer__link { opacity: 1; transform: none; }
.drawer.is-open .drawer__link:nth-child(1) { transition-delay: 0.05s; }
.drawer.is-open .drawer__link:nth-child(2) { transition-delay: 0.10s; }
.drawer.is-open .drawer__link:nth-child(3) { transition-delay: 0.15s; }
.drawer.is-open .drawer__link:nth-child(4) { transition-delay: 0.20s; }
.drawer.is-open .drawer__link:nth-child(5) { transition-delay: 0.25s; }
.drawer__cta { margin-top: var(--s-3); }

/* Scroll progress */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  z-index: 95;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: calc(var(--header-h) + var(--s-6)) var(--s-6);
  position: relative;
  overflow: hidden;
}
.hero__inner { max-width: 62rem; position: relative; z-index: 2; }
.hero__title { margin-block: var(--s-3) var(--s-4); }
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-5);
}
.hero__scroll {
  position: absolute;
  left: var(--gutter);
  bottom: var(--s-4);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text-faint);
}
.hero__scroll-line {
  width: 46px; height: 1px;
  background: var(--border-strong);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  opacity: 0;
  animation: scrollHint 3.2s ease-in-out infinite;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding-block: var(--s-6) var(--s-4);
  background: var(--bg-2);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--s-4);
  margin-bottom: var(--s-6);
}
.footer__col .footer__label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: var(--s-3);
}
.footer__col li { margin-bottom: 0.6rem; }
.footer__col a { color: var(--text-dim); font-size: 0.92rem; transition: color var(--t-fast); }
.footer__col a:hover { color: var(--cyan); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  justify-content: space-between;
  align-items: center;
  padding-top: var(--s-3);
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.85rem;
}