/* ============================================================
   RTS PUBLIC SITE — section styles. Mobile-first.
   Brand values come exclusively from tokens.css.
   ============================================================ */

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.7rem;
}
.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}
/* Source logo SVG is baked white-fill (dark-theme asset) — invert on paper.
   TODO: replace with an ink-fill export when real logo files land. */
.logo-ink { filter: invert(1) brightness(0.9); }
.site-header__wordmark {
  font-weight: 800;
  font-size: var(--text-small);
  letter-spacing: 0.14em;
  white-space: nowrap;
}
.site-header__nav {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}
.site-header__link {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--track-label);
  text-decoration: none;
  color: var(--ink-dim);
}
.site-header__link:hover { color: var(--accent-deep); }
.site-header__cta {
  padding: 0.55em 0.7em;
  font-size: var(--text-tiny);
  white-space: nowrap;
}
/* Secondary CTA collapses to an icon-only pill under 480px —
   two full-text buttons plus the wordmark don't fit a 375px header. */
.site-header__cta--dashboard .site-header__cta-full { display: none; }

@media (min-width: 480px) {
  .site-header__cta { padding: 0.6em 1.1em; font-size: var(--text-small); }
  .site-header__cta--dashboard .site-header__cta-full { display: inline; }
  .site-header__cta--dashboard .site-header__cta-short { display: none; }
}
@media (min-width: 768px) {
  .site-header__link { display: inline; }
  .site-header__nav { gap: var(--space-4); }
}

/* ---- Hero ---- */
.hero { padding-block: clamp(3rem, 9vh, 7rem) 0; }
.hero__title { margin-top: var(--space-3); }
.hero__sub {
  margin-top: var(--space-4);
  max-width: 34rem;
  font-size: var(--text-h3);
  line-height: 1.45;
}
.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block: var(--space-5);
}
.hero__ticker { margin-top: var(--space-5); }

/* ---- Concept ---- */
.concept {
  display: grid;
  gap: var(--space-5);
}
.concept__body {
  display: grid;
  gap: var(--space-3);
  max-width: 36rem;
  align-content: start;
}
@media (min-width: 768px) {
  .concept { grid-template-columns: 1fr 1.1fr; align-items: start; }
}

.rhythm {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.rhythm__card { padding: var(--space-4); }
.rhythm__day {
  font-weight: 800;
  font-size: var(--text-tiny);
  letter-spacing: var(--track-label);
  color: var(--accent-deep);
  border: 1.5px solid var(--accent-deep);
  border-radius: 99px;
  display: inline-block;
  padding: 0.25em 0.9em;
  margin-bottom: var(--space-3);
}
.rhythm__card h3 { margin-bottom: var(--space-2); }
@media (min-width: 768px) {
  .rhythm { grid-template-columns: repeat(3, 1fr); }
}

/* ---- Tiers ---- */
.tiers {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.tier {
  position: relative;
  padding: var(--space-5) var(--space-4) var(--space-4);
  background: var(--bg);
  overflow: hidden;
}
.tier__emoji {
  position: absolute;
  top: -0.15em;
  right: 0.05em;
  font-size: 4.6rem;
  line-height: 1;
  opacity: 0.9;
  pointer-events: none;
}
.tier__km {
  font-size: var(--text-h1);
  font-weight: 800;
  line-height: 1;
}
.tier h3 {
  margin-block: var(--space-1) var(--space-2);
  background: linear-gradient(104deg, transparent 0.4%, var(--accent) 1.8%, var(--accent) 98%, transparent 99.5%);
  display: inline-block;
  padding: 0.02em 0.15em;
}
.tier:hover { border-color: var(--accent-deep); }
@media (min-width: 768px) {
  .tiers { grid-template-columns: repeat(3, 1fr); }
}

/* ---- Stats (dark panel) ---- */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5) var(--space-4);
  margin-top: var(--space-6);
}
.stats__label {
  font-family: var(--font-mono);
  font-size: var(--text-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--track-label);
  color: var(--on-dark-dim);
  margin-bottom: var(--space-2);
}
.stats__value {
  font-size: clamp(2.6rem, 9vw, 5.2rem);
  font-weight: 800;
  line-height: 1;
}
.stats__note { margin-top: var(--space-6); font-size: var(--text-tiny); }
@media (min-width: 768px) {
  .stats { grid-template-columns: repeat(4, 1fr); }
}

/* ---- Gallery ---- */
.gallery {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
  grid-template-columns: repeat(2, 1fr);
}
.gallery__tile {
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-md);
  border: 1px dashed var(--line-strong);
  background:
    repeating-linear-gradient(45deg,
      var(--surface) 0 14px,
      var(--surface-2) 14px 28px);
  display: grid;
  place-items: center;
  text-align: center;
}
.gallery__tile--wide {
  grid-column: span 2;
  aspect-ratio: 16 / 9;
}
.gallery__tile span {
  font-size: var(--text-tiny);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  line-height: 1.8;
}
@media (min-width: 768px) {
  .gallery { grid-template-columns: repeat(4, 1fr); }
  .gallery__tile--wide { grid-column: span 2; aspect-ratio: auto; }
}

/* ---- Sponsors ---- */
.sponsor-hero {
  margin-top: var(--space-5);
  padding: var(--space-5);
  background: var(--bg);
  border-left: 6px solid var(--accent);
}
.sponsor-hero__badge {
  font-size: var(--text-tiny);
  font-weight: 700;
  letter-spacing: var(--track-label);
  color: var(--accent-deep);
  margin-bottom: var(--space-2);
}
.sponsor-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  margin-top: var(--space-5);
}
.sponsor-row li {
  font-weight: 800;
  font-size: var(--text-h3);
  letter-spacing: 0.12em;
  color: var(--ink-faint);
}
.sponsor-note { margin-top: var(--space-4); font-size: var(--text-tiny); }

/* ---- Join ---- */
.steps {
  list-style: none;
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
  counter-reset: none;
}
.steps__item {
  border-top: 2px solid var(--ink);
  padding-top: var(--space-3);
}
.steps__num {
  font-weight: 800;
  font-size: var(--text-small);
  color: var(--accent-deep);
}
.steps__item h3 { margin-block: var(--space-1) var(--space-2); }
.join__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.join__members { margin-top: var(--space-4); color: var(--ink-dim); }
.join__members-link { font-weight: 700; }
@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

/* ---- Footer ---- */
.site-footer { margin-top: var(--space-6); }
.site-footer__grid {
  display: grid;
  gap: var(--space-5);
  padding-block: var(--space-6);
}
.site-footer__brand { display: grid; gap: var(--space-3); }
.site-footer__col p { margin-top: var(--space-2); }
.site-footer__link {
  text-decoration: none;
  color: var(--on-dark);
}
.site-footer__link:hover { color: var(--on-dark-accent); }
.site-footer__legal {
  border-top: 1px solid var(--dark-line);
  padding-block: var(--space-4);
  font-size: var(--text-tiny);
}
@media (min-width: 768px) {
  .site-footer__grid { grid-template-columns: 2fr 1fr 1fr; }
}