/* Tight Spiral project page. Loads after /css/site.css and reuses its tokens. */

/* NAV: static on this page, and keep both links visible on phones ----- */
.sp-nav { position: relative; inset: auto; }
.sp-nav .nav__links a { display: inline; }

/* HERO ---------------------------------------------------------------- */
.sp-hero {
  padding: clamp(48px, 9vw, 140px) 0 clamp(48px, 6vw, 88px);
  background: radial-gradient(ellipse 60% 70% at 30% 40%, #f3f3f1 0%, rgba(243, 243, 241, 0) 70%), var(--bg);
}
.sp-hero__eyebrow { color: var(--ink-2); }
.sp-hero__title {
  margin-top: 18px;
  font: 400 clamp(76px, 17vw, 260px)/.84 var(--display);
  text-transform: uppercase; letter-spacing: .005em;
  overflow-wrap: break-word;
}
.sp-hero__sub {
  margin-top: clamp(20px, 2.6vw, 34px); max-width: 28ch;
  font-size: clamp(21px, 2.2vw, 30px); line-height: 1.25; letter-spacing: -.01em;
}
.sp-tags {
  list-style: none; margin: 26px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.sp-tags li {
  font: 500 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em;
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-2);
}
.sp-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.sp-btn--ink { border-color: var(--ink); color: var(--ink); }
.sp-btn--ink:hover { border-color: var(--ink); background: var(--ink); color: var(--dark-ink); }
.sp-floor { height: 7px; background: var(--accent); }

/* VIDEO --------------------------------------------------------------- */
.sp-video { padding-top: clamp(40px, 6vw, 88px); }
.sp-video__frame {
  position: relative; max-width: 1100px; margin: 0 auto;
  aspect-ratio: 16 / 9; border-radius: 4px; overflow: hidden; background: var(--dark);
}
.sp-video__frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.sp-video__credit { max-width: 1100px; margin: 10px auto 0; font-size: 13px; color: var(--muted); }

/* SECTIONS ------------------------------------------------------------ */
.sp-sec {
  display: grid; grid-template-columns: minmax(80px, 2fr) 10fr; gap: clamp(20px, 4vw, 64px);
  padding-top: clamp(56px, 8vw, 110px);
}
.sp-sec__num { color: var(--muted); padding-top: 14px; border-top: 1px solid var(--line); }
.sp-sec__body { border-top: 1px solid var(--line); padding-top: 14px; min-width: 0; }
.sp-h2 {
  font: 400 clamp(40px, 5.4vw, 80px)/.94 var(--display);
  text-transform: uppercase; letter-spacing: .005em;
  margin: 10px 0 clamp(20px, 2.6vw, 34px);
}
.sp-lead { font-size: clamp(19px, 1.7vw, 24px); line-height: 1.38; max-width: 34em; }

/* Definition lists (metrics + setup) */
.sp-defs { margin: 26px 0 0; border-top: 1px solid var(--line); }
.sp-defs div {
  display: grid; grid-template-columns: minmax(120px, 2fr) 7fr; gap: 24px;
  padding: 16px 0; border-bottom: 1px solid var(--line);
}
.sp-defs dt { font: 500 12px/1.9 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink); }
.sp-defs dd { margin: 0; color: var(--ink-2); }
.sp-defs--setup { margin-top: 0; }
.sp-defs--setup dd { color: var(--ink); font-size: 18px; }

/* Why it's hard */
.sp-points { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.sp-points li {
  position: relative; padding: 18px 0 18px 30px; border-bottom: 1px solid var(--line);
  color: var(--ink-2); max-width: 52em;
}
.sp-points li::before {
  content: ''; position: absolute; left: 2px; top: 27px; width: 9px; height: 9px;
  border-radius: 50%; background: var(--accent);
}
.sp-points strong { color: var(--ink); }

/* Pipeline */
.sp-steps { list-style: none; margin: 0; padding: 0; border-top: 3px solid var(--accent); }
.sp-steps li {
  display: grid; grid-template-columns: 72px 1fr; gap: 20px;
  padding: 22px 0; border-bottom: 1px solid var(--line);
}
.sp-steps__n { font: 400 clamp(40px, 4vw, 56px)/.9 var(--display); color: var(--ink); }
.sp-steps h3 { font-size: 19px; font-weight: 700; }
.sp-steps p { margin-top: 4px; color: var(--ink-2); max-width: 46em; }

/* Results */
.sp-stats li { grid-template-columns: minmax(150px, 5fr) 6fr; }
.sp-stats b { white-space: nowrap; }
.sp-compare {
  margin-top: 26px; max-width: 46em; font-size: clamp(17px, 1.4vw, 19px); color: var(--ink-2);
  padding-left: 16px; border-left: 3px solid var(--accent);
}
.sp-compare .eyebrow { display: block; margin-bottom: 6px; color: var(--ink); font-size: 12px; }

/* Citation */
.sp-cite {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 18px 20px; background: var(--bg-2); border-radius: 4px; border: 1px solid var(--line);
}
.sp-cite__text { flex: 1; min-width: 0; font: 400 14px/1.65 var(--mono); color: var(--ink); overflow-wrap: anywhere; user-select: all; }
.sp-cite__copy {
  flex: none; font: 500 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em;
  padding: 9px 12px; border-radius: 999px; cursor: pointer;
  background: transparent; color: var(--ink); border: 1px solid var(--ink);
}
.sp-cite__copy:hover { background: var(--ink); color: var(--dark-ink); }

/* CTA */
.sp-cta { margin-top: clamp(80px, 10vw, 140px); }
.sp-cta .cta__actions { margin-top: 34px; }

/* RESPONSIVE ---------------------------------------------------------- */
@media (max-width: 720px) {
  .sp-sec { grid-template-columns: 1fr; gap: 0; }
  .sp-sec__num { border-top: 1px solid var(--line); padding-bottom: 0; }
  .sp-sec__body { border-top: 0; padding-top: 0; }
  .sp-defs div { grid-template-columns: 1fr; gap: 4px; }
  .sp-steps li { grid-template-columns: 44px 1fr; gap: 12px; }
  .sp-stats b { white-space: normal; }
  .sp-cite { flex-direction: column; gap: 12px; }
}