/* Shared styles for the frontend pages: the CSS vars, page scaffolding, and
   the top nav bar. Load before the page's own <style> block so pages can
   override (e.g. the welcome page narrows main). Page-specific styles (tables,
   forms, badges) stay inline in each page. */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --row-hover: #f3f4f6;
  --card: #f9fafb;
  --accent: #2563eb;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
  /* brand — the cyan/pink highlights of graphics/bubble-logo.jpeg */
  --brand-cyan: #5fe6f2;
  --brand-pink: #f076d6;
  --nav-bg: #0b0b10;      /* always dark: the logo jpeg sits on solid black */
  --nav-border: #23232e;
  --nav-fg: #9ca3af;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --fg: #e5e7eb;
    --muted: #9ca3af;
    --border: #262a33;
    --row-hover: #1a1d24;
    --card: #171a21;
    --accent: #60a5fa;
    --danger: #f87171;
    --ok: #4ade80;
    --warn: #fbbf24;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

/* Top nav bar — markup injected into <header id="topnav"> by js/nav.js.
   Permanently dark in both themes so the logo's black background blends in. */
#topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.55rem 1.25rem;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  overflow-x: auto;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-right: 1.5rem;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-brand img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: block;
}
.nav-brand span {
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
#topnav .nav-link {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--nav-fg);
  text-decoration: none;
  white-space: nowrap;
}
#topnav .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
}
#topnav .nav-link.active {
  color: var(--nav-bg);
  font-weight: 600;
  background: linear-gradient(90deg, var(--brand-cyan), var(--brand-pink));
}
/* push-center + push-right each open a nav group with an auto margin; the
   two auto margins share the leftover space, centering the middle group */
#topnav .nav-link.push-center { margin-left: auto; }
#topnav .nav-link.push-right { margin-left: auto; }
/* signed-in chip (email + Sign out), injected by js/nav.js when a stored
   sign-in exists */
#topnav .nav-user {
  color: var(--nav-fg);
  font-size: 0.75rem;
  white-space: nowrap;
  margin-left: 0.6rem;
}
@media (max-width: 700px) {
  #topnav { padding: 0.5rem 0.9rem; }
  .nav-brand { margin-right: 0.75rem; }
  .nav-brand span { display: none; }
  #topnav .nav-link.push-center { margin-left: 0; }
  #topnav .nav-link.push-right { margin-left: 0; }
  #topnav .nav-user { display: none; }
}

/* sign-in gate card on the app pages (browse/jobs/bubbles), injected by
   js/auth.js's bubbleAuthGate when nobody is signed in */
.auth-gate {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  padding: 2.25rem 1.5rem;
  margin: 1.5rem 0;
}
.auth-gate p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

main {
  flex: 1;
  width: 100%;
  min-width: 0;
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}
h1 {
  font-size: 1.375rem;
  margin: 0 0 0.25rem;
}
.subtitle {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0 0 1.5rem;
}
#status {
  color: var(--muted);
  font-size: 0.875rem;
  padding: 1rem 0;
}
#status.error {
  color: var(--danger);
  white-space: pre-wrap;
}
footer {
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.75rem;
}

/* Notes block under a rendered bubble (bubbles.html's inspection view). */
.bubble-notes {
  margin: 0.875rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.5;
}
/* Video grid — YouTube-front-page-style cards (thumb, title, meta; no
   reasons), markup from videoCardHtml in js/common.js. Shared by browse.html
   (the feed) and bubbles.html (the selected bubble's picks).
   hqdefault.jpg is 4:3 with letterbox bars; the 16:9 cover crop removes them. */
.browse-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem 1rem;
}
.browse-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--fg);
}
.browse-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 10px;
  background: var(--card);
  display: block;
}
.browse-title {
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.browse-card:hover .browse-title { color: var(--accent); }
.browse-meta { color: var(--muted); font-size: 0.8125rem; }
.empty-note { color: var(--muted); font-size: 0.875rem; }