/* ==========================================================================
   base.css — design tokens and shared primitives
   Snowflake palette, reset, typography, site chrome, status tags.
   Every page loads this first.
   ========================================================================== */

:root {
  --sf-blue: #29B5E8;
  --sf-blue-deep: #11567F;
  --sf-blue-darker: #0A3D5A;
  --sf-cyan: #71D3DC;
  --sf-blue-pale: #E8F6FC;
  --bg: #FFFFFF;
  --bg-alt: #F7F9FB;
  --bg-code: #F5F7FA;
  --text: #1E1E1E;
  --text-muted: #5A6872;
  --border: #E5EAF0;
  --border-strong: #CFD7E0;
  --success: #2E7D32;
  --warning: #E65100;
  --warning-pale: #FFF7ED;
  --error: #C62828;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 2px rgba(17, 86, 127, 0.06);
  --shadow-md: 0 4px 12px rgba(17, 86, 127, 0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Menlo, Consolas, "Courier New", monospace;
}

/* --- reset ---------------------------------------------------------------- */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* --- layout -------------------------------------------------------------- */

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* --- typography ---------------------------------------------------------- */

h1 { font-size: 2.25rem; font-weight: 700; color: var(--sf-blue-deep); margin: 0 0 0.5rem; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; font-weight: 600; color: var(--sf-blue-deep); margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--border); }
h3 { font-size: 1.15rem; font-weight: 600; color: var(--text); margin: 1.75rem 0 0.75rem; }
h4 { font-size: 1rem; font-weight: 600; margin: 1rem 0 0.5rem; color: var(--text); }
h2 .tag, h3 .tag, h4 .tag { margin-left: 0.5rem; }
.lead { font-size: 1.125rem; color: var(--text-muted); margin: 0 0 2rem; max-width: 68ch; }
p { margin: 0.75rem 0; }
ul, ol { margin: 0.75rem 0; padding-left: 1.35rem; }
li { margin-bottom: 0.4rem; }
code { font-family: var(--font-mono); font-size: 0.875em; background: var(--bg-code); padding: 0.15em 0.4em; border-radius: 3px; color: var(--sf-blue-darker); border: 1px solid var(--border); }
.muted { color: var(--text-muted); }

/* --- site chrome --------------------------------------------------------- */

.site-header {
  background: linear-gradient(135deg, var(--sf-blue-deep) 0%, var(--sf-blue-darker) 100%);
  color: white;
  padding: 1.5rem 0;
  border-bottom: 3px solid var(--sf-blue);
}
/* Back link to the site index. Sits above the brand on every doc page.
   Solid cyan chip so it reads clearly against the dark header gradient. */
.home-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 1rem;
  padding: 0.42rem 0.95rem 0.42rem 0.8rem;
  border: 1px solid var(--sf-cyan);
  border-radius: 999px;
  background: var(--sf-cyan);
  color: var(--sf-blue-darker);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.18);
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.home-link:hover {
  background: #fff;
  border-color: #fff;
  color: var(--sf-blue-darker);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.26);
}
.home-link:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.home-link .home-arrow { font-size: 1rem; line-height: 1; transition: transform 0.15s ease; }
.home-link:hover .home-arrow { transform: translateX(-3px); }

.brand { display: flex; align-items: center; gap: 0.5rem; font-size: 1.25rem; font-weight: 600; margin-bottom: 0.75rem; }
.brand-mark { font-size: 1.5rem; color: var(--sf-blue); }
.brand-text .divider { color: var(--sf-cyan); margin: 0 0.5rem; font-weight: 300; }
.meta { display: flex; flex-wrap: wrap; gap: 0.25rem 2rem; font-size: 0.875rem; color: rgba(255, 255, 255, 0.85); }
.meta-label { color: var(--sf-cyan); font-weight: 600; margin-right: 0.5rem; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.05em; }

.site-footer { background: var(--sf-blue-darker); color: rgba(255, 255, 255, 0.75); padding: 1.25rem 0; margin-top: 4rem; font-size: 0.875rem; text-align: center; }
.site-footer strong { color: var(--sf-cyan); }
.site-footer a { color: var(--sf-cyan); }

/* --- status tags ---------------------------------------------------------
   Label any capability that is not generally available with its real status.
   ------------------------------------------------------------------------- */

.tag { display: inline-block; font-size: 0.7rem; font-weight: 700; padding: 0.15em 0.5em; border-radius: 4px; text-transform: uppercase; letter-spacing: 0.04em; vertical-align: middle; }
.tag-new { background: var(--sf-blue-pale); color: var(--sf-blue-deep); border: 1px solid var(--sf-blue); }
.tag-oob { background: #F1F8F4; color: var(--success); border: 1px solid #A5D6A7; }
.tag-custom { background: #FFF7ED; color: var(--warning); border: 1px solid #FBBF24; }
.tag-confirm { background: #FEF2F2; color: var(--error); border: 1px solid #FCA5A5; }
.tag-soon { background: #EEF1F4; color: #5A6872; border: 1px solid var(--border-strong); }
.tag-research { background: #F3E8FF; color: #6B21A8; border: 1px solid #D8B4FE; }

/* --- cards ---------------------------------------------------------------
   Shared card grid used by the landing page and by doc hub pages.
   Two content styles are supported: `h2` + `p` (landing), or
   `.card-title` + `.card-desc` (deck hubs).
   ------------------------------------------------------------------------- */

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover {
  border-color: var(--sf-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 9px;
  background: var(--sf-blue-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.card h2 {
  margin: 0 0 8px;
  padding: 0;
  border: none;
  font-size: 1.125rem;
  font-weight: 640;
  letter-spacing: -0.01em;
  color: var(--sf-blue-deep);
}
.card p { margin: 0 0 18px; font-size: 0.9375rem; color: var(--text-muted); }
.card-title { font-size: 1.12rem; font-weight: 700; color: var(--sf-blue-deep); margin-bottom: 0.4rem; }
.card-desc { font-size: 0.9rem; color: var(--text-muted); flex-grow: 1; }
.card-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.card-cta { margin-top: 1rem; font-size: 0.85rem; font-weight: 600; color: var(--sf-blue-deep); }
.card-cta span { transition: margin-left 0.15s ease; margin-left: 4px; }
.card:hover .card-cta span { margin-left: 8px; }
.card-cta .arrow { display: inline-block; margin-left: 0; transition: transform 0.15s ease; }
.card:hover .card-cta .arrow { transform: translateX(4px); }
.card.is-link:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-left-color: var(--sf-blue-deep); }

/* --- inline emphasis link ------------------------------------------------ */

a.inline { color: var(--sf-blue-deep); font-weight: 600; }

/* --- responsive ---------------------------------------------------------- */

@media (max-width: 900px) { h1 { font-size: 1.75rem; } }
@media (max-width: 720px) { .card-grid.cols-2 { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .container { padding: 0 1rem; } }
@media print { body { font-size: 12px; } .home-link { display: none; } }