/* ==============================================================
   PROTEVIA · Insights — shared article stylesheet
   Matches the design tokens of index.html (time-based light/dark).
   Used by every article page in /insights/.
   ============================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* ── TOKENS — DARK (default) ── */
:root {
  --navy:        #0B1218;
  --graphite:    #111820;
  --surface:     #17232B;
  --blue:        #0A74A6;
  --teal:        #23A6A6;
  --steel:       #6F7D85;
  --muted:       #C8D1D6;
  --ice:         #F4F7F8;
  --border:      rgba(244,247,248,0.08);
  --border-teal: rgba(35,166,166,0.28);
  --max:         1140px;
  --gutter:      clamp(24px,5vw,72px);
  --nav-bg:      rgba(11,18,24,0.92);
  --nav-overlay: #0B1218;
  --serif:       "Source Serif 4", Georgia, serif;
}

/* ── TOKENS — LIGHT (07:00 – 18:00) ── */
[data-theme="light"] {
  --navy:        #F5F8FA;
  --graphite:    #EBF0F3;
  --surface:     #DFE7EC;
  --blue:        #0A74A6;
  --teal:        #1A9292;
  --steel:       #526070;
  --muted:       #1E2D3A;
  --ice:         #111820;
  --border:      rgba(15,26,36,0.11);
  --border-teal: rgba(26,146,146,0.38);
  --nav-bg:      rgba(245,248,250,0.93);
  --nav-overlay: #F5F8FA;
}

body, #nav, .data-tile, .data-callout, .toc-wrap, .cta-card,
.vignette, .next-episode, .pull-quote {
  transition: background-color 0.6s ease, border-color 0.4s ease;
}
a, p, h1, h2, h3, span, li, label, div {
  transition: color 0.4s ease;
}

body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--graphite);
  color: var(--ice);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
a { color: var(--teal); text-decoration: none; }

/* ── UTILITY ── */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.rule-teal { display: flex; align-items: center; gap: 12px; }
.rule-teal::before {
  content: ""; display: block; width: 28px; height: 1px;
  background: var(--teal); flex-shrink: 0;
}
.label {
  color: var(--teal); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
}

/* ── NAV ── */
#nav {
  position: fixed; inset: 0 0 auto 0; z-index: 200;
  background: var(--nav-bg);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max); margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-symbol { width: 30px; height: 30px; flex-shrink: 0; }
.nav-wordmark { display: flex; flex-direction: column; line-height: 1; }
.nav-name {
  font-size: 1.05rem; font-weight: 700; color: var(--ice);
  letter-spacing: 0.04em;
}
.nav-descriptor {
  font-size: 0.62rem; font-weight: 600; color: var(--teal);
  letter-spacing: 0.18em; text-transform: uppercase; margin-top: 3px;
}
.nav-links { list-style: none; display: flex; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 0.85rem; font-weight: 500; }
.nav-links a:hover { color: var(--ice); }
.nav-cta {
  padding: 10px 18px;
  border: 1px solid var(--teal);
  color: var(--teal); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.nav-cta:hover { background: var(--teal); color: var(--navy); }
@media (max-width: 880px) { .nav-links, .nav-cta { display: none; } }

/* ── HERO ── */
#hero {
  padding-top: clamp(140px, 18vw, 200px);
  padding-bottom: clamp(50px, 6vw, 90px);
  border-bottom: 1px solid var(--border);
}
.hero-inner { max-width: 820px; }
.hero-kicker { margin-bottom: 24px; }
.hero-eyebrow {
  display: flex; flex-wrap: wrap; gap: 18px 28px;
  font-size: 0.72rem; color: var(--steel);
  letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500;
  margin-bottom: 32px;
}
.hero-eyebrow .sep { color: var(--border-teal); }
h1.article-title {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  font-weight: 500; letter-spacing: -0.015em;
  line-height: 1.12; color: var(--ice); margin-bottom: 28px;
}
.article-deck {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-style: italic;
  color: var(--muted); line-height: 1.55; max-width: 720px;
}
.hero-rule { width: 56px; height: 2px; background: var(--teal); margin: 36px 0 0 0; }

/* ── ARTICLE LAYOUT ── */
#article { padding-top: clamp(50px, 6vw, 90px); padding-bottom: clamp(80px, 10vw, 140px); }
.article-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(36px, 5vw, 84px);
  align-items: start;
}
@media (max-width: 960px) {
  .article-grid { grid-template-columns: 1fr; }
  .toc-wrap { display: none; }
}

/* ── TOC ── */
.toc-wrap {
  position: sticky; top: 120px;
  border-left: 1px solid var(--border);
  padding: 6px 0 6px 20px;
}
.toc-label {
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 16px;
}
.toc-wrap ol { list-style: none; counter-reset: toc; display: flex; flex-direction: column; gap: 11px; }
.toc-wrap li { counter-increment: toc; }
.toc-wrap a { color: var(--muted); font-size: 0.82rem; line-height: 1.45; display: block; }
.toc-wrap a:hover { color: var(--ice); }
.toc-wrap a::before {
  content: "0" counter(toc) "  ";
  color: var(--steel); font-weight: 500;
}

/* ── BODY TYPOGRAPHY ── */
.article-body {
  max-width: 700px;
  font-family: var(--serif);
  font-size: 1.08rem; line-height: 1.78;
  color: var(--muted);
}
.article-body h2 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.3vw, 1.75rem);
  font-weight: 500; color: var(--ice);
  letter-spacing: -0.01em; line-height: 1.18;
  margin-top: 56px; margin-bottom: 22px;
}
.article-body h3 {
  font-family: "Inter", sans-serif;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--teal);
  margin-top: 36px; margin-bottom: 14px;
}
.article-body p { margin-bottom: 22px; }
.article-body strong { color: var(--ice); font-weight: 500; }
.article-body em { color: var(--muted); }
.article-body ul, .article-body ol { margin: 8px 0 28px 0; padding-left: 24px; }
.article-body li { margin-bottom: 10px; }
.article-body ul li::marker { color: var(--teal); }
.article-body ol li::marker { color: var(--teal); font-weight: 600; }

/* ── PULL QUOTE ── */
.pull-quote {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.1vw, 1.6rem);
  line-height: 1.35; color: var(--ice);
  border-left: 2px solid var(--teal);
  padding: 4px 0 4px 24px;
  margin: 44px 0;
  font-style: italic; letter-spacing: -0.005em;
}
.pull-quote cite {
  display: block; margin-top: 14px;
  font-family: "Inter", sans-serif; font-style: normal;
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--steel);
}

/* ── DATA STRIP ── */
.data-strip {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0; border: 1px solid var(--border); margin: 40px 0;
}
.data-tile { padding: 24px 22px; border-right: 1px solid var(--border); }
.data-tile:last-child { border-right: 0; }
@media (max-width: 700px) {
  .data-strip { grid-template-columns: 1fr; }
  .data-tile { border-right: 0; border-bottom: 1px solid var(--border); }
  .data-tile:last-child { border-bottom: 0; }
}
.data-num {
  font-family: "Inter", sans-serif;
  font-size: 1.7rem; font-weight: 500;
  color: var(--teal); letter-spacing: -0.02em;
  line-height: 1.05; margin-bottom: 10px;
}
.data-desc {
  font-family: "Inter", sans-serif;
  font-size: 0.78rem; color: var(--steel);
  line-height: 1.65; letter-spacing: 0.01em;
}

/* ── VIGNETTES ── */
.vignette-stack { display: flex; flex-direction: column; gap: 18px; margin: 28px 0 8px 0; }
.vignette { border: 1px solid var(--border); padding: 22px 24px; }
.vignette-label {
  font-family: "Inter", sans-serif;
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 10px;
}
.vignette-title {
  font-family: var(--serif);
  font-size: 1.15rem; font-weight: 500;
  color: var(--ice); margin-bottom: 12px;
  letter-spacing: -0.005em;
}
.vignette-body {
  font-family: var(--serif);
  font-size: 1rem; line-height: 1.7; color: var(--muted);
}

/* ── CTA CARDS ── */
.cta-card {
  border: 1px solid var(--border-teal);
  padding: 32px 30px; margin: 48px 0;
  display: grid; grid-template-columns: 1fr auto;
  gap: 24px; align-items: center;
}
@media (max-width: 700px) { .cta-card { grid-template-columns: 1fr; } }
.cta-card-eyebrow {
  font-family: "Inter", sans-serif;
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 12px;
}
.cta-card h3 {
  font-family: var(--serif);
  font-size: 1.4rem; font-weight: 500;
  color: var(--ice); margin: 0 0 8px 0;
  letter-spacing: -0.005em; text-transform: none;
}
.cta-card p {
  font-family: "Inter", sans-serif;
  font-size: 0.92rem; color: var(--muted);
  line-height: 1.55; margin: 0; max-width: 540px;
}
.cta-card-btn {
  padding: 14px 22px; background: var(--teal); color: var(--navy);
  font-family: "Inter", sans-serif;
  font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  border: 0; cursor: pointer; white-space: nowrap;
}
.cta-card-btn:hover { background: var(--blue); color: var(--ice); }
.cta-card-btn.ghost {
  background: transparent;
  border: 1px solid var(--teal); color: var(--teal);
}
.cta-card-btn.ghost:hover { background: var(--teal); color: var(--navy); }

/* ── NEXT EPISODE ── */
.next-episode {
  border-top: 1px solid var(--border);
  margin-top: 56px; padding-top: 36px;
  display: flex; justify-content: space-between;
  align-items: flex-end; gap: 24px; flex-wrap: wrap;
}
.next-episode-text { font-family: var(--serif); max-width: 520px; }
.next-episode-label {
  font-family: "Inter", sans-serif;
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 10px;
}
.next-episode-title {
  font-size: 1.4rem; color: var(--ice);
  font-weight: 500; line-height: 1.25;
  letter-spacing: -0.005em;
}
.next-episode-meta {
  font-family: "Inter", sans-serif;
  font-size: 0.78rem; color: var(--steel); margin-top: 8px;
}
.next-episode a {
  font-family: "Inter", sans-serif;
  font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--teal);
}

/* ── ARTICLE FOOT ── */
.article-foot {
  border-top: 1px solid var(--border);
  margin-top: 56px; padding-top: 28px;
  font-family: "Inter", sans-serif;
  font-size: 0.78rem; color: var(--steel); line-height: 1.6;
}
.article-foot p + p { margin-top: 14px; }

/* ── FOOTER ── */
#footer {
  background: var(--navy);
  border-top: 1px solid var(--border);
  padding-top: 60px; padding-bottom: 36px;
}
.footer-inner { display: flex; flex-direction: column; gap: 40px; }
.footer-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-logo svg { width: 240px; height: auto; }
.footer-nav { display: flex; gap: 60px; flex-wrap: wrap; }
.footer-nav-col { display: flex; flex-direction: column; gap: 9px; }
.footer-nav-heading {
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 6px;
}
.footer-nav-col a { font-size: 0.83rem; color: var(--muted); }
.footer-nav-col a:hover { color: var(--ice); }
.footer-bottom {
  display: flex; justify-content: space-between;
  align-items: center; gap: 18px; flex-wrap: wrap;
  padding-top: 24px; border-top: 1px solid var(--border);
  font-size: 0.76rem; color: var(--steel);
}
.footer-legal { display: flex; gap: 22px; }
.footer-legal a { color: var(--steel); }
.footer-legal a:hover { color: var(--ice); }

/* ── HUB INDEX (used only on /insights/index.html) ── */
.episode-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 0; border: 1px solid var(--border); margin-top: 32px;
}
@media (max-width: 760px) { .episode-grid { grid-template-columns: 1fr; } }
.episode-card {
  padding: 28px 28px 32px 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: background-color 0.3s ease;
}
.episode-card:nth-child(2n) { border-right: 0; }
.episode-card:hover { background: var(--surface); }
.ep-tag {
  font-family: "Inter", sans-serif;
  font-size: 0.66rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 14px;
}
.ep-status {
  font-family: "Inter", sans-serif;
  font-size: 0.62rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--steel); margin-left: 12px;
}
.ep-status.live { color: var(--teal); }
.ep-title {
  font-family: var(--serif);
  font-size: 1.25rem; font-weight: 500;
  color: var(--ice); line-height: 1.3;
  letter-spacing: -0.005em; margin-bottom: 10px;
}
.ep-title a { color: var(--ice); }
.ep-deck {
  font-family: var(--serif);
  font-size: 0.95rem; color: var(--muted);
  line-height: 1.55; margin-bottom: 16px; flex-grow: 1;
}
.ep-meta {
  font-family: "Inter", sans-serif;
  font-size: 0.72rem; color: var(--steel);
  display: flex; gap: 14px; flex-wrap: wrap;
}
.ep-meta .sep { color: var(--border-teal); }