/* vyxworks base stylesheet — shared across all product sites. */

:root {
  --color-bg: #FFFFFF;
  --color-fg: #1A1A1A;
  --color-muted: #6B7280;
  --color-accent: #04C98A;
  --color-accent-fg: #FFFFFF;
  --color-border: #E5E7EB;
  --color-surface: #F7F7F8;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Noto Sans", "Noto Sans JP", "Noto Sans SC", sans-serif;
  --max-width: 720px;
  --nav-height: 56px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0B1426;
    --color-fg: #F5F6F8;
    --color-muted: #9CA3AF;
    --color-border: #1E293B;
    --color-surface: #111C2F;
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-fg);
  background: var(--color-bg);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

a:hover { border-bottom-color: var(--color-accent); }

img, svg { display: block; max-width: 100%; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Sticky navigation ────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--nav-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-fg);
  font-weight: 600;
  letter-spacing: -0.01em;
  border-bottom: none;
}

.site-nav-brand svg { width: 22px; height: 22px; }

.site-nav-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
}

.site-nav-links a {
  color: var(--color-muted);
  border-bottom: none;
}

.site-nav-links a:hover { color: var(--color-fg); }

/* ── Site footer ──────────────────────────── */
.site-footer {
  margin-top: 80px;
  padding: 40px 0 48px;
  border-top: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-muted);
}

.site-footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.site-footer-links a {
  color: var(--color-muted);
  border-bottom: none;
}

.site-footer-links a:hover { color: var(--color-fg); }

.site-footer-meta {
  font-size: 13px;
  line-height: 1.6;
}

.site-footer-meta-en {
  color: var(--color-muted);
  opacity: 0.7;
  font-size: 12px;
}

/* ── Buttons ──────────────────────────────── */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border-bottom: none;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-accent-fg);
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: #03B57B;
}

.btn-ghost {
  background: transparent;
  color: var(--color-fg);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover { background: var(--color-surface); }

/* ── Responsive ───────────────────────────── */
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .site-nav-inner { padding: 0 20px; }
  .site-nav-links { gap: 16px; font-size: 13px; }
  .site-footer-inner { padding: 0 20px; }
}