/**
 * ============================================================================
 * LAYOUT
 * ============================================================================
 * Structural positioning and grids: header, section rhythm, and the
 * layout (not styling) of each section's content. Visual styling for
 * repeated components (buttons, cards, pills) lives in components.css.
 * ============================================================================
 */

/* ---------- Fixed header + scrubber ------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(10, 10, 11, 0.6);
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  border-bottom: 1px solid transparent;
  transition: background var(--dur-med) var(--ease-standard), border-color var(--dur-med) var(--ease-standard);
}

.site-header.is-scrolled {
  background: rgba(10, 10, 11, 0.86);
  border-bottom-color: var(--c-steel);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: var(--ls-display);
  color: var(--c-bone);
  white-space: nowrap;
  text-decoration: none;
}

.brand-logo {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--c-steel);
}

.brand-mark {
  color: var(--c-ash);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-mono);
}

.nav-pills {
  display: flex;
  gap: var(--space-2xs);
  overflow-x: auto;
  scrollbar-width: none;
  max-width: 62vw;
}

.nav-pills::-webkit-scrollbar {
  display: none;
}

.scrubber {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
}

.scrubber-track {
  position: relative;
  height: 100%;
  background: var(--c-steel);
}

.scrubber-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: var(--c-bone);
  transition: width var(--dur-fast) linear;
}

.scrubber-ticks {
  position: absolute;
  inset: 0;
}

.scrubber-tick {
  position: absolute;
  top: -2px;
  width: 1px;
  height: 7px;
  background: var(--c-steel-soft);
  transform: translateX(-50%);
}

/* ---------- Section rhythm ---------------------------------------------- */

.section {
  position: relative;
  padding-block: var(--space-xl);
  background: var(--c-void);
  scroll-margin-top: var(--header-h);
}

.section--alt {
  background: var(--c-charcoal);
}

.section--hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: calc(var(--header-h) + var(--space-lg)) var(--space-lg);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  margin-bottom: var(--space-lg);
  max-width: 640px;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-display);
  color: var(--c-bone);
  text-transform: uppercase;
}

/* ---------- Hero ---------------------------------------------------------*/

.hero {
  position: relative;
  width: 100%;
  z-index: 1;
}

.hero-watermark {
  position: absolute;
  right: -6%;
  top: 58%;
  width: min(72vw, 900px);
  transform: translateY(-50%) rotate(-9deg);
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-handle {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  letter-spacing: var(--ls-mono);
  color: var(--c-ash);
  margin-top: var(--space-sm);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  line-height: 0.92;
  letter-spacing: var(--ls-display);
  color: var(--c-bone);
  text-transform: uppercase;
  margin-top: var(--space-xs);
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: var(--fs-lead);
  color: var(--c-fog);
  margin-top: var(--space-sm);
}

.hero-subtext {
  max-width: 52ch;
  font-size: var(--fs-body);
  color: var(--c-ash);
  margin-top: var(--space-xs);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.hero-scroll-cue {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-mono);
  color: var(--c-ash);
  text-transform: uppercase;
}

/* ---------- About --------------------------------------------------------*/

.about-grid {
  display: grid;
  grid-template-columns: minmax(220px, 320px) 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.profile-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  position: sticky;
  top: calc(var(--header-h) + var(--space-md));
}

.profile-frame {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-copy {
  max-width: 62ch;
}

.bio p {
  margin-bottom: var(--space-sm);
  color: var(--c-fog);
}

.bio p:first-child {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  letter-spacing: var(--ls-display);
  color: var(--c-bone);
  line-height: var(--lh-tight);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

/* ---------- Content pillars -----------------------------------------------*/

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-sm);
}

/* ---------- Videos ---------------------------------------------------------*/

.videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-sm);
}

.videos-footer {
  display: flex;
  justify-content: center;
  margin-top: var(--space-lg);
}

/* ---------- Join -----------------------------------------------------------*/

.join-panel {
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
}

.join-title {
  margin-top: var(--space-xs);
}

.join-text {
  max-width: 52ch;
  margin-inline: auto;
  margin-top: var(--space-sm);
  color: var(--c-ash);
}

.join-actions {
  display: flex;
  justify-content: center;
  margin-top: var(--space-md);
}

.socials {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

/* ---------- Footer -----------------------------------------------------------*/

.site-footer {
  border-top: var(--border-hair);
  padding-block: var(--space-lg);
  background: var(--c-void);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--c-ash);
  letter-spacing: var(--ls-mono);
}

.back-to-top {
  position: fixed;
  right: var(--space-md);
  bottom: var(--space-md);
  z-index: 400;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity var(--dur-med) var(--ease-standard), transform var(--dur-med) var(--ease-standard);
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ---------- Responsive ------------------------------------------------------*/

@media (max-width: 860px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .profile-col {
    position: static;
    max-width: 220px;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .nav-pills {
    max-width: 52vw;
  }
}

@media (max-width: 560px) {
  .nav-label {
    display: none;
  }

  .hero-watermark {
    display: none;
  }
}