/* Shared public storefront primitives for issue #838.
 * Keep this file static and dependency-free: public pages must remain useful
 * without JavaScript and must not wait on runtime component rendering. */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

.sf-page {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body), sans-serif;
  line-height: 1.6;
}

.sf-page :where(h1, h2, h3, h4, p, figure) {
  margin-top: 0;
}

.sf-page a {
  color: var(--cyan);
  overflow-wrap: anywhere;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.sf-page :where(a, button, summary):focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.sf-shell {
  width: min(100% - 3rem, 1080px);
  margin-inline: auto;
}

.sf-shell--narrow {
  max-width: 760px;
}

.sf-topbar {
  position: sticky;
  z-index: 100;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 52px;
  padding: 0.35rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(4, 8, 15, 0.96);
  backdrop-filter: blur(12px);
}

.sf-brand,
.sf-topbar__links a {
  font-family: var(--font-display), sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sf-brand {
  flex: 0 0 auto;
  color: #fff !important;
  font-size: 0.95rem;
  text-decoration: none;
}

.sf-brand__accent {
  color: var(--cyan);
}

.sf-topbar__links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.1rem;
}

.sf-topbar__links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.78rem;
  text-decoration: none;
}

.sf-topbar__links a:hover {
  color: var(--cyan);
}

.sf-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(3.25rem, 8vw, 5.5rem) 1.5rem clamp(3rem, 7vw, 4.5rem);
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(circle at 50% 0%, rgba(0, 212, 255, 0.12), transparent 42%),
    linear-gradient(165deg, #04080f 0%, var(--bg2) 52%, rgba(0, 212, 255, 0.05) 100%);
  text-align: center;
}

.sf-eyebrow,
.sf-section__label {
  margin-bottom: 0.65rem;
  color: var(--cyan);
  font-family: var(--font-display), sans-serif;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.sf-hero h1,
.sf-section__title {
  color: var(--text);
  font-family: var(--font-display), sans-serif;
  font-weight: 900;
  letter-spacing: 0.025em;
  line-height: 1.04;
  text-transform: uppercase;
}

.sf-hero h1 {
  max-width: 860px;
  margin: 0 auto 1rem;
  font-size: clamp(2.35rem, 7vw, 4.5rem);
}

.sf-hero h1 span,
.sf-section__title span {
  color: var(--cyan);
}

.sf-hero__deck,
.sf-section__lead {
  color: var(--muted);
}

.sf-hero__deck {
  max-width: 680px;
  margin: 0 auto 2rem;
  font-size: clamp(1rem, 2.2vw, 1.15rem);
}

.sf-hero__fine {
  margin: 1.25rem 0 0;
  color: var(--muted2);
  font-size: 0.8rem;
}

.sf-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
}

.sf-actions--start {
  justify-content: flex-start;
}

.sf-page .fhq-marketing-banner {
  min-height: 44px;
}

.sf-page [data-fhq-marketing-cta][data-fhq-style="banner"] {
  min-height: 44px;
  display: flex;
  justify-content: center;
  margin-block: 1rem;
}

.sf-button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--r-lg, 10px);
  font-family: var(--font-display), sans-serif;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition: filter 150ms ease, border-color 150ms ease, color 150ms ease,
    transform 150ms ease;
}

.sf-button--primary {
  background: var(--cyan);
  color: #04080f !important;
}

.sf-button--secondary {
  border-color: var(--border);
  background: transparent;
  color: var(--text) !important;
}

.sf-button:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.sf-button--secondary:hover {
  border-color: var(--cyan);
  color: var(--cyan) !important;
}

.sf-section {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.sf-section--band {
  border-block: 1px solid var(--border);
  background: var(--bg2);
}

.sf-section--center {
  text-align: center;
}

.sf-section__title {
  margin-bottom: 0.65rem;
  font-size: clamp(1.65rem, 4vw, 2.5rem);
}

.sf-section__lead {
  max-width: 680px;
  margin-bottom: 1.75rem;
  font-size: 0.96rem;
}

.sf-section--center .sf-section__lead {
  margin-inline: auto;
}

.sf-card-grid,
.sf-proof-grid {
  display: grid;
  gap: 1rem;
}

.sf-card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sf-card {
  padding: 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--r-xl, 14px);
  background: var(--card);
}

.sf-card__icon {
  display: block;
  margin-bottom: 0.6rem;
  color: var(--cyan);
  font-size: 1.45rem;
}

.sf-card h3,
.sf-step h3,
.sf-step h4 {
  margin-bottom: 0.45rem;
  font-family: var(--font-display), sans-serif;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.sf-card p,
.sf-step p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.sf-step {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  align-items: start;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
}

.sf-step:last-child {
  border-bottom: 0;
}

.sf-step__number {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0, 212, 255, 0.35);
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.1);
  color: var(--cyan);
  font-family: var(--font-display), sans-serif;
  font-weight: 800;
}

.sf-proof-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  text-align: left;
}

.sf-proof {
  min-width: 0;
  overflow: hidden;
  margin: 0;
  border: 1px solid rgba(0, 212, 255, 0.32);
  border-radius: var(--r-xl, 14px);
  background: linear-gradient(145deg, rgba(0, 212, 255, 0.08), var(--card));
}

.sf-proof__frame {
  aspect-ratio: 16 / 9;
  display: grid;
  place-content: center;
  gap: 0.55rem;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  background: repeating-linear-gradient(
    135deg,
    transparent 0 18px,
    rgba(255, 255, 255, 0.018) 18px 36px
  );
  text-align: center;
}

.sf-proof__label {
  color: var(--cyan);
  font-family: var(--font-display), sans-serif;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.sf-proof__frame strong {
  font-family: var(--font-display), sans-serif;
  font-size: 1.1rem;
  text-transform: uppercase;
}

.sf-proof__frame span:last-child,
.sf-proof figcaption {
  color: var(--muted);
  font-size: 0.86rem;
}

.sf-proof figcaption {
  padding: 1rem;
  line-height: 1.55;
}

.sf-proof code {
  color: var(--text);
  font-size: 0.78rem;
}

.sf-objection {
  max-width: 720px;
  margin-inline: auto;
  padding: 1.15rem 1.3rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--cyan);
  border-radius: var(--r-lg, 10px);
  background: var(--card);
  color: var(--muted);
  text-align: left;
}

.sf-objection strong {
  color: var(--text);
}

.sf-faq {
  display: grid;
  gap: 0.7rem;
}

.sf-faq details {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--r-lg, 10px);
  background: var(--card);
}

.sf-faq details[open] {
  border-color: rgba(0, 212, 255, 0.4);
}

.sf-faq summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  cursor: pointer;
  color: var(--text);
  font-weight: 700;
  list-style: none;
}

.sf-faq summary::-webkit-details-marker {
  display: none;
}

.sf-faq summary::after {
  content: "+";
  color: var(--cyan);
  font-family: var(--font-display), sans-serif;
  font-size: 1.25rem;
}

.sf-faq details[open] summary::after {
  content: "−";
}

.sf-faq__answer {
  padding: 0 1.1rem 1.1rem;
  color: var(--muted);
}

.sf-conversion {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--r-xl, 14px);
  background: linear-gradient(145deg, rgba(0, 212, 255, 0.09), var(--card));
  text-align: center;
}

.sf-conversion .sf-section__lead {
  margin-inline: auto;
}

.sf-footer {
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted2);
  font-size: 0.82rem;
  text-align: center;
}

.sf-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
  margin-top: 0.9rem;
}

.sf-footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
}

.sf-footer a:hover {
  color: var(--cyan);
}

@media (max-width: 720px) {
  .sf-shell {
    width: min(100% - 2rem, 1080px);
  }

  .sf-topbar {
    align-items: flex-start;
    padding-inline: 1rem;
  }

  .sf-topbar__links {
    max-width: 70vw;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }

  .sf-card-grid,
  .sf-proof-grid {
    grid-template-columns: 1fr;
  }

  .sf-actions .sf-button {
    width: min(100%, 420px);
  }
}

@media (max-width: 420px) {
  .sf-brand {
    font-size: 0;
  }

  .sf-brand::before {
    content: "FHQ";
    color: #fff;
    font-size: 0.82rem;
  }

  .sf-topbar__links {
    gap: 0.7rem;
  }

  .sf-topbar__links a {
    font-size: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .sf-button {
    transition: none;
  }

  .sf-button:hover {
    transform: none;
  }
}