/* ============================================================
   recodeai.css — shared design tokens + components
   Extracted verbatim from index.html so /news/ and /explain/
   pages match the existing site with zero design drift.
   Existing pages keep their inline styles; new pages link this.
   ============================================================ */

:root {
  /* Headspace-inspired warm palette (from index.html) */
  --bg: #FDF7EE;
  --bg-elevated: #F7EFE1;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FDF7EE;
  --bg-dark: #1C2B2B;
  --bg-dark-elevated: #243535;

  --text: #1C2B2B;
  --text-muted: #6B6B6B;
  --text-dim: #A8A8A8;
  --text-on-dark: #F7EFE1;
  --text-muted-on-dark: rgba(247,239,225,0.65);

  --accent: #E8603C;          /* coral-orange */
  --accent-hover: #D4502E;
  --accent-warm: #F2A04A;     /* saffron */
  --accent-warm-dim: rgba(242,160,74,0.15);
  --accent-dim: rgba(232,96,60,0.1);
  --accent-glow: rgba(232,96,60,0.06);

  --border: rgba(28,43,43,0.08);
  --border-hover: rgba(28,43,43,0.16);
  --border-accent: rgba(232,96,60,0.2);
  --border-dark: rgba(247,239,225,0.1);

  /* Priority colors (from firehose) */
  --breaking: #E63946;
  --notable: #D4890A;
  --interesting: #E8603C;

  --serif: 'Instrument Serif', Georgia, serif;
  --sans: 'Inter', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --max-w: 1200px;
  --r: 16px;
  --r-sm: 8px;
  --r-pill: 100px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a, button { -webkit-tap-highlight-color: transparent; }
::selection { background: var(--accent); color: #fff; }
a { color: inherit; text-decoration: none; }

/* Subtle warm grain texture (from index.html) */
body::after {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.018'/%3E%3C/svg%3E");
}

/* ===================== NAV ===================== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 2rem; height: 64px;
  display: flex; justify-content: space-between; align-items: center;
  background: rgba(253,247,238,0.88);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid var(--border);
}
nav a, nav button { min-height: 44px; display: inline-flex; align-items: center; }
.nav-logo {
  font-family: var(--mono); font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.06em; color: var(--text);
  display: flex; align-items: center; gap: 0.6rem;
}
.nav-logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; }
.nav-back {
  font-family: var(--mono); font-size: 0.75rem; color: var(--text-muted);
  letter-spacing: 0.04em; transition: color 0.2s;
  padding: 0.4rem 0.9rem; border-radius: var(--r-pill);
  border: 1px solid var(--border);
}
.nav-back:hover { color: var(--accent); border-color: var(--border-accent); background: var(--accent-dim); }
.nav-subscribe {
  font-family: var(--sans); font-size: 0.78rem; font-weight: 500;
  padding: 0.5rem 1.2rem; border-radius: var(--r-pill);
  background: var(--accent); color: #fff;
  letter-spacing: 0.01em; transition: all 0.25s;
  box-shadow: 0 2px 12px rgba(232,96,60,0.28);
}
.nav-subscribe:hover { background: var(--accent-hover); box-shadow: 0 4px 20px rgba(232,96,60,0.4); transform: translateY(-1px); }

/* ===================== HERO / ARTICLE HEAD ===================== */
.article-hero {
  padding: 9rem 2rem 3.5rem;
  max-width: 760px; margin: 0 auto;
  position: relative;
}
.article-hero::before {
  content: ''; position: absolute;
  top: 0; right: -100px; width: 500px; height: 500px;
  background: radial-gradient(ellipse at center, rgba(242,160,74,0.15) 0%, transparent 65%);
  pointer-events: none;
}
.article-label {
  font-family: var(--mono); font-size: 0.63rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent);
  background: var(--accent-dim); border: 1px solid var(--border-accent);
  padding: 0.3rem 0.85rem; border-radius: var(--r-pill);
  display: inline-block; margin-bottom: 1.8rem;
}
.article-hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400; line-height: 1.08; margin-bottom: 1.5rem;
  color: var(--bg-dark);
}
.article-hero h1 em { font-style: italic; color: var(--accent); }
.article-subtitle {
  font-size: 1.15rem; color: var(--text-muted); line-height: 1.6;
  max-width: 620px; margin-bottom: 1.5rem;
}
.article-meta {
  display: flex; gap: 2rem; flex-wrap: wrap;
  font-size: 0.8rem; color: var(--text-dim); margin-bottom: 1rem;
  font-family: var(--mono); letter-spacing: 0.04em;
}
.article-tags { display: flex; gap: 0.5rem; margin-top: 1rem; flex-wrap: wrap; }
.article-tag {
  font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-muted);
  background: var(--bg-elevated); border: 1px solid var(--border);
  padding: 0.28rem 0.75rem; border-radius: var(--r-pill);
}
.hero-rule { max-width: 760px; margin: 0 auto; border: none; border-top: 1px solid var(--border); }

/* ===================== ARTICLE BODY ===================== */
.article-body { max-width: 680px; margin: 0 auto; padding: 3.5rem 2rem 6rem; }
.article-body p { margin-bottom: 1.6rem; color: var(--text-muted); font-size: 1.05rem; line-height: 1.9; }
.article-body h2 { font-family: var(--serif); font-size: 1.85rem; font-weight: 400; margin: 3.5rem 0 1.5rem; color: var(--bg-dark); }
.article-body h3 { font-family: var(--serif); font-size: 1.35rem; font-weight: 400; margin: 2.5rem 0 1rem; color: var(--bg-dark); }
.article-body ul, .article-body ol { margin: 0 0 1.6rem 1.2rem; color: var(--text-muted); font-size: 1.05rem; line-height: 1.9; }
.article-body li { margin-bottom: 0.5rem; }
.article-body strong { color: var(--text); font-weight: 600; }
.article-body a { color: var(--accent); border-bottom: 1px solid var(--border-accent); }
.article-body a:hover { border-bottom-color: var(--accent); }

/* Direct-answer block — the 40-word AEO answer */
.answer-box {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm); padding: 1.5rem 1.7rem; margin: 0 0 2.5rem;
}
.answer-box p { margin: 0; color: var(--text); font-size: 1.12rem; line-height: 1.7; }
.answer-box .answer-tag {
  font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 0.6rem;
}

.highlight-box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.5rem 1.7rem; margin: 0 0 1.2rem;
}
.highlight-box h4 { font-family: var(--serif); font-size: 1.15rem; font-weight: 400; margin-bottom: 0.4rem; color: var(--bg-dark); }
.highlight-box p { margin: 0; font-size: 0.98rem; }
.section-divider { max-width: 680px; margin: 1rem auto; border: none; border-top: 1px solid var(--border); }

/* ===================== SHARED SECTION HEADERS ===================== */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.section-label {
  font-family: var(--mono); font-size: 0.67rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
  background: var(--accent-dim); border: 1px solid var(--border-accent);
  padding: 0.45rem 1.1rem; border-radius: var(--r-pill);
  display: inline-block; margin-bottom: 1.4rem;
}
.section-title { font-family: var(--serif); font-size: clamp(1.9rem, 3.5vw, 3rem); font-weight: 400; line-height: 1.18; margin-bottom: 0.9rem; color: var(--bg-dark); }
.section-desc { font-size: 1rem; color: var(--text-muted); max-width: 560px; margin-bottom: 2.5rem; }

/* ===================== CARDS (news + explainers) ===================== */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.entry-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.5rem 1.4rem;
  transition: all 0.22s; display: flex; flex-direction: column; gap: 0.55rem;
}
.entry-card:hover { border-color: var(--border-hover); box-shadow: 0 4px 20px rgba(28,43,43,0.08); transform: translateY(-1px); }
.entry-card h4 { font-family: var(--serif); font-size: 1.22rem; font-weight: 400; line-height: 1.3; color: var(--bg-dark); }
.entry-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }
.entry-meta { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); margin-top: auto; }

/* Priority pills (match firehose exactly) */
.priority { font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.12em; text-transform: uppercase; }
.priority.breaking { color: var(--breaking); }
.priority.notable { color: var(--notable); }
.priority.interesting { color: var(--interesting); }

/* Filter pills */
.filter-bar { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 2rem; }
.filter-pill {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.45rem 1rem; border-radius: var(--r-pill);
  border: 1px solid var(--border); color: var(--text-muted);
  background: transparent; cursor: pointer; transition: all 0.2s;
}
.filter-pill:hover { border-color: var(--border-accent); color: var(--accent); }
.filter-pill.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Related links block */
.related { max-width: 680px; margin: 0 auto; padding: 0 2rem 4rem; }
.related h3 { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 1rem; }
.related-links { display: flex; flex-direction: column; gap: 0.6rem; }
.related-links a {
  font-family: var(--sans); font-size: 0.95rem; color: var(--text);
  padding: 0.7rem 1rem; border: 1px solid var(--border); border-radius: var(--r-sm);
  transition: all 0.2s; display: flex; align-items: center; gap: 0.6rem;
}
.related-links a:hover { border-color: var(--border-accent); background: var(--accent-dim); color: var(--accent); }
.related-links a::before { content: '→'; color: var(--accent); }

/* Sources block */
.sources { font-size: 0.85rem; color: var(--text-dim); }
.sources a { color: var(--accent); border-bottom: 1px solid var(--border-accent); }

/* ===================== CTA + FOOTER ===================== */
.article-cta { max-width: 680px; margin: 0 auto; padding: 2rem; text-align: center; }
.article-cta p { color: var(--text-muted); margin-bottom: 1.2rem; }
.cta-btn {
  display: inline-block; font-family: var(--sans); font-weight: 500; font-size: 0.9rem;
  padding: 0.75rem 1.8rem; border-radius: var(--r-pill); background: var(--accent); color: #fff;
  box-shadow: 0 2px 12px rgba(232,96,60,0.28); transition: all 0.25s;
}
.cta-btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(232,96,60,0.4); }

footer {
  border-top: 1px solid var(--border); padding: 2.5rem 2rem;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--text-dim);
  max-width: var(--max-w); margin: 0 auto;
}
.footer-links { display: flex; gap: 1.4rem; }
.footer-links a { color: var(--text-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 900px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) {
  nav { padding: 0 1.2rem; }
  .card-grid { grid-template-columns: 1fr; }
  .article-hero { padding: 7rem 1.4rem 2.5rem; }
  .article-body { padding: 2.5rem 1.4rem 4rem; }
  .section-title { font-size: clamp(1.6rem, 5.5vw, 2.2rem); }
}