/* Base + layout */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-text);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: var(--fs-bodyL);
  line-height: var(--lh-bodyL);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); line-height: var(--lh-h1); }
h2 { font-size: var(--fs-h2); line-height: var(--lh-h2); }
h3 { font-size: var(--fs-h3); line-height: var(--lh-h3); }
h4 { font-size: var(--fs-h4); line-height: var(--lh-h4); }
p { margin: 0; text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img, svg { display: block; max-width: 100%; }

:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.tabular { font-variant-numeric: tabular-nums; }

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 64px;
}
@media (max-width: 1024px) { .container { padding: 0 32px; } }
@media (max-width: 768px)  { .container { padding: 0 16px; } }

/* Prototype shell */
.proto-root {
  min-height: 100vh;
  background: var(--c-bg);
  color: var(--c-text);
  display: flex;
  flex-direction: column;
}

/* Prototype shell — site fills the real viewport */
.viewport-frame {
  background: var(--c-bg);
  width: 100%;
  min-height: 100vh;
  position: relative;
}

/* Scrollbar tidy */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--c-border-strong); border-radius: 999px; }
::-webkit-scrollbar-track { background: transparent; }

/* Top app bar (prototype chrome) */
.app-bar {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in oklab, var(--c-bg) 92%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border);
}
.app-bar-inner {
  max-width: 1600px; margin: 0 auto;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 24px;
}
.app-bar h1 { font-size: 14px; line-height: 20px; margin: 0; font-weight: 600; letter-spacing: 0; }
.app-bar .crumbs {
  font-family: var(--font-mono);
  font-size: 12px; color: var(--c-text-3);
  margin-left: 4px;
}
.app-bar .spacer { flex: 1; }

.seg {
  display: inline-flex; padding: 3px; gap: 2px;
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--r-md);
}
.seg button {
  appearance: none; border: 0; background: transparent;
  padding: 6px 12px;
  font-size: 12px; font-weight: 500;
  color: var(--c-text-2);
  border-radius: 6px;
  display: inline-flex; align-items: center; gap: 6px;
}
.seg button[aria-pressed="true"] {
  background: var(--c-surface-2); color: var(--c-text);
  box-shadow: var(--shadow-1);
}

/* Nav rail (page switcher) */
.page-nav { display: flex; flex-wrap: wrap; gap: 6px; }
.page-nav .seg button.active { background: var(--c-primary); color: var(--c-primary-ink); }
.page-nav .seg button.active:hover { background: var(--c-primary-hover); }

/* Helpers */
.muted { color: var(--c-text-2); }
.tiny  { font-size: var(--fs-caption); line-height: var(--lh-caption); }
.row { display: flex; align-items: center; gap: var(--s-3); }
.col { display: flex; flex-direction: column; }
.between { justify-content: space-between; }
.divider { height: 1px; background: var(--c-border); border: 0; margin: 0; }

/* Star sky background (used in hero, empty states) */
.sky {
  background:
    radial-gradient(1.5px 1.5px at 12% 22%, #fff, transparent 60%),
    radial-gradient(1px 1px at 28% 68%, #fff, transparent 60%),
    radial-gradient(2px 2px at 64% 18%, #fff, transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 52%, #ffe9b3, transparent 60%),
    radial-gradient(1px 1px at 44% 88%, #fff, transparent 60%),
    radial-gradient(1.5px 1.5px at 92% 30%, #ffe9b3, transparent 60%),
    radial-gradient(1px 1px at 8% 78%, #fff, transparent 60%),
    radial-gradient(1.5px 1.5px at 58% 70%, #fff, transparent 60%),
    linear-gradient(180deg, var(--c-night) 0%, var(--c-night-2) 100%);
}

/* Ornamental divider (subtle) */
.ornament {
  display: flex; align-items: center; gap: 12px;
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase;
}
.ornament::before, .ornament::after {
  content: ""; flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
  opacity: 0.5;
}

/* Tweaks panel container override */
.tweaks-host { position: fixed; right: 16px; bottom: 16px; z-index: 9000; }