/* ─────────────────────────────────────────────────────────────────────────
   Golden Pi — modern additions (additive layer)
   Loaded AFTER extra.css (mkdocs.yml → extra_css).

   Rules of engagement for this file:
   · every rule is scoped to the homepage hero (.gp-hero) or to a motion
     preference, so nothing elsewhere on the site shifts;
   · px first, then a clamp() upgrade inside @supports, so older engines
     still get a sane size;
   · ships its own reduced-motion guard for the custom animation, which
     Material's own guard does not cover.
   ───────────────────────────────────────────────────────────────────────── */

/* ── Fluid type for the hero (px fallback, then clamp) ── */
.md-typeset .gp-hero h1 {
  font-size: 2.2rem;
}

@supports (font-size: clamp(1rem, 1vw, 2rem)) {
  .md-typeset .gp-hero h1 {
    font-size: clamp(1.85rem, 6.4vw, 2.8rem);
    letter-spacing: -0.5px;
  }

  .md-typeset .gp-hero .gp-hero-formula {
    font-size: clamp(1.25rem, 5.4vw, 2.2rem);
    letter-spacing: 0.5px;
    margin: 14px 0;
  }

  .md-typeset .gp-hero .gp-hero-subtitle {
    font-size: clamp(0.95rem, 2.6vw, 1.1rem);
  }

  .md-typeset .gp-hero .gp-hero-tagline {
    font-size: clamp(1rem, 2.8vw, 1.15rem);
  }
}

/* ── CTA row: comfortable tap targets that wrap without overflowing ── */
.md-typeset .gp-hero .md-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  margin: 6px 4px 0;
  box-sizing: border-box;
}

.md-typeset .gp-hero .md-button svg {
  height: 1.1em;
  width: 1.1em;
}

/* ── Phone widths: stack the CTAs, tighten the hero, shrink the Φ watermark ── */
@media screen and (max-width: 40em) {
  .md-typeset .gp-hero {
    padding: 26px 14px 22px;
    border-radius: 14px;
    margin-bottom: 26px;
  }

  .md-typeset .gp-hero::before {
    font-size: 150px;
    top: -26px;
    right: -14px;
  }

  .md-typeset .gp-hero .gp-hero-icon {
    font-size: 2.2rem;
    margin-bottom: 6px;
  }

  .md-typeset .gp-hero .md-button {
    display: flex;
    width: 100%;
    margin: 8px 0 0;
    justify-content: center;
    text-align: center;
  }
}

/* ── Motion: honour the OS preference, including the custom pulse ── */
@media (prefers-reduced-motion: reduce) {
  .md-typeset .gp-hero .gp-hero-formula span,
  .md-typeset .gp-hero::before,
  .md-typeset .gp-hero .gp-hero-icon,
  .md-typeset .gp-hero .gp-hero-icon .twemoji {
    animation: none !important;
    filter: none !important;
  }

  .md-typeset .gp-hero .md-button,
  .md-typeset .gp-hero .md-button:hover {
    transition: none !important;
    transform: none !important;
    box-shadow: none !important;
  }
}