/* SyncGallery shared site styles.
 * Loaded by all template-rendered pages except cloud guides (which keep their
 * own light-theme palette) and the legal pages (third-party content).
 * Design tokens mirror index.html.
 */

:root {
  --bg: #0a0d12;
  --bg-alt: #13181f;
  --bg-elevated: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-bright: #cbd5e1;
  --text-strong: #fff;
  --accent: #64748b;
  --accent-hover: #475569;
  --accent-soft: #cbd5e1;
  --border: #1f2937;
  --link: #60a5fa;
  --link-hover: #93c5fd;
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.30);
  --shadow-md: 0 8px 28px rgba(0,0,0,0.40);
}

* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ----- HEADER ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 18, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: 0 2px 24px rgba(0,0,0,0.40); }
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-strong);
}
.nav-brand:hover { text-decoration: none; color: var(--text-strong); }
.nav-brand img { width: 36px; height: 36px; border-radius: 8px; }
.nav-brand span { font-weight: 700; font-size: 1.05rem; }
.nav-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  color: var(--accent-soft);
  text-decoration: none;
  transition: color 0.15s, opacity 0.15s;
}
.nav-icon-link:hover { color: var(--text-strong); text-decoration: none; }
.nav-icon-link svg { width: 22px; height: 22px; }

/* ----- PAGE HERO (solid dark) ----- */
.page-hero {
  padding: 80px 24px 48px;
  background: var(--bg);
  text-align: center;
  color: var(--text-strong);
}
.page-hero-inner { max-width: 760px; margin: 0 auto; }
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--text-bright); text-decoration: none; }
.breadcrumb a:hover { color: var(--text-strong); text-decoration: underline; }
.breadcrumb .sep { margin: 0 8px; opacity: 0.5; }
.page-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  color: var(--text-strong);
}
.page-hero p {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-bright);
  max-width: 600px;
  margin: 0 auto;
}

/* ----- ARTICLE ----- */
.article { padding: 48px 24px 72px; background: var(--bg); }
.article-inner { max-width: 760px; margin: 0 auto; }
.article h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  font-weight: 700;
  color: var(--text-strong);
  margin: 40px 0 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.article h2:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
.article h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-strong);
  margin: 28px 0 10px;
}
.article p {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 16px;
}
.article p.lede { font-size: 1.1rem; color: var(--text-bright); }
.article ul { margin: 0 0 20px 24px; color: var(--text); }
.article ul li { margin-bottom: 8px; }
.article strong { color: var(--text-strong); font-weight: 700; }
.article em { color: var(--text-bright); }
.article .callout {
  background: var(--bg-alt);
  border-left: 4px solid var(--accent);
  padding: 16px 20px;
  border-radius: 8px;
  margin: 20px 0;
}
.article .callout p { margin-bottom: 0; font-size: 0.95rem; color: var(--text); }
.article .callout.big p {
  font-size: 1.15rem;
  text-align: center;
  font-weight: 600;
  color: var(--text-strong);
}
.article hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}
.article .disclaimer {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
}

/* ----- FAQ ----- */
.faq-item { margin-bottom: 20px; }
.faq-q {
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 6px;
}
.faq-a { color: var(--text); }

/* ----- INLINE CTA (matches index .final block) ----- */
.cta-inline {
  background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg) 100%);
  border: 1px solid var(--border);
  color: var(--text-strong);
  border-radius: 18px;
  padding: 32px 24px;
  text-align: center;
  margin: 32px 0;
}
.cta-inline h3 {
  color: var(--text-strong);
  margin: 0 0 8px;
  font-size: 1.25rem;
}
.cta-inline p {
  color: var(--text-muted);
  margin: 0 0 22px;
  font-size: 0.98rem;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: var(--text-strong);
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--text-strong);
  text-decoration: none;
}
.btn-primary:active { transform: scale(0.98); }
.btn-primary svg { width: 20px; height: 20px; }

/* ----- STORY DIAGRAM ----- */
.story-diagram {
  margin: 40px auto;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.story-diagram svg { width: 100%; height: auto; display: block; }
.story-diagram figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ----- SHARED FOOTER (sg-footer-*) ----- */
.sg-footer {
  background: var(--bg);
  color: var(--text-muted);
  padding: 48px 0 32px;
  font-size: 14px;
  line-height: 1.6;
  border-top: 1px solid var(--border);
}
.sg-footer * { box-sizing: border-box; }
.sg-footer-container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.sg-footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.sg-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--text-strong);
  text-decoration: none;
}
.sg-brand:hover { color: var(--text-strong); text-decoration: none; }
.sg-brand-icon { width: 24px; height: 24px; border-radius: 6px; display: inline-block; }
.sg-footer-tagline {
  font-size: 14px;
  color: var(--text-muted);
  margin: 10px 0 0;
}
.sg-footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin: 0 0 12px;
}
.sg-footer-col ul { list-style: none; padding: 0; margin: 0; }
.sg-footer-col li { padding: 4px 0; margin: 0; }
.sg-footer-col a {
  color: var(--text-bright);
  text-decoration: none;
  font-size: 14px;
}
.sg-footer-col a:hover { color: var(--text-strong); text-decoration: underline; }

/* ----- RESPONSIVE ----- */
@media (min-width: 600px) {
  .page-hero { padding: 96px 24px 56px; }
  .sg-footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 32px;
  }
}
@media (min-width: 900px) {
  .page-hero { padding: 120px 24px 72px; }
  .article { padding: 64px 24px 96px; }
  .cta-inline { padding: 40px 36px; }
  .sg-footer { padding: 64px 0 40px; }
  .sg-footer-grid {
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
  }
}
@media (max-width: 600px) {
  .article { padding: 32px 20px 56px; }
  .page-hero { padding: 64px 20px 36px; }
}