/*
 * main.css
 * Base layout, navigation, footer, and page styles for the GlassCue site.
 * Product-specific brand styles live in glasscue.css.
 */

:root {
  --color-text: #1a1b1f;
  --color-text-muted: #515768;
  --color-bg: #faf9fe;
  --color-surface: #ffffff;
  --color-border: #e8eaf0;
  --color-primary: #0058bc;
  --color-primary-hover: #0070eb;
  --max-width: 1100px;
  --radius: 12px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { color: var(--color-primary-hover); }

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  padding: 8px 16px;
  background: var(--color-primary);
  color: #fff;
  z-index: 100;
}
.skip-link:focus { top: 0; }

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 249, 254, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}
.site-nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--color-text);
}
.site-logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.site-logo-mark svg { width: 14px; height: 14px; }
.site-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav-links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 15px;
  transition: color 0.15s ease;
}
.site-nav-links a:hover,
.site-nav-links a.active {
  color: var(--color-text);
}
.site-nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.site-nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px 0;
  background: var(--color-text);
  border-radius: 2px;
}

@media (max-width: 720px) {
  .site-nav-toggle { display: block; }
  .site-nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .site-nav-links.open { max-height: 320px; }
  .site-nav-links li { width: 100%; }
  .site-nav-links a {
    display: block;
    padding: 14px 24px;
    border-top: 1px solid var(--color-border);
  }
}

/* Page layout */
.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.page-wrapper {
  max-width: 760px;
  margin: 0 auto;
}
.page-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}
.page-header h1 {
  margin: 0 0 8px;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.page-subtitle {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 17px;
}

.page-entry {
  font-size: 17px;
  line-height: 1.75;
}
.page-entry h1 { font-size: 32px; margin-top: 48px; margin-bottom: 16px; }
.page-entry h2 { font-size: 26px; margin-top: 40px; margin-bottom: 14px; letter-spacing: -0.01em; }
.page-entry h3 { font-size: 21px; margin-top: 32px; margin-bottom: 12px; }
.page-entry h1:first-child,
.page-entry h2:first-child,
.page-entry h3:first-child { margin-top: 0; }

.page-entry p { margin: 0 0 1.25em; }

.page-entry ul,
.page-entry ol {
  padding-left: 1.5em;
  margin: 0 0 1.25em;
}
.page-entry li { margin-bottom: 0.4em; }

.page-entry hr {
  margin: 36px 0;
  border: 0;
  border-top: 1px solid var(--color-border);
}

.page-entry blockquote {
  margin: 1.5em 0;
  padding: 12px 20px;
  border-left: 3px solid var(--color-primary);
  background: rgba(0, 88, 188, 0.04);
  color: var(--color-text-muted);
}

.page-entry code {
  background: rgba(0, 0, 0, 0.05);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.92em;
  font-family: 'SF Mono', Menlo, Monaco, Consolas, monospace;
}

.page-entry pre {
  background: #0c1220;
  color: #e6e9f2;
  padding: 18px 20px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1.5em 0;
}
.page-entry pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.page-entry table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 15px;
}
.page-entry th,
.page-entry td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.page-entry th {
  background: var(--color-surface);
  font-weight: 600;
}

/* Footer */
.site-footer {
  margin-top: 64px;
  padding: 48px 24px 24px;
  background: #0c1220;
  color: #c8cdda;
}
.site-footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
}
.site-footer-brand {
  max-width: 380px;
}
.site-footer-brand strong {
  display: block;
  color: #fff;
  font-size: 18px;
  margin-bottom: 6px;
}
.site-footer-brand p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: #8d96ad;
}
.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: center;
}
.site-footer-links a {
  color: #c8cdda;
  font-size: 14px;
  font-weight: 500;
}
.site-footer-links a:hover { color: #fff; }

.site-footer-bottom {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: #6e768a;
}
.site-footer-bottom p { margin: 0; }