/* ─── TradeNote Blog — Editorial Financial Journal style ─────────
   Dark navy canvas · Cormorant Garamond display · IBM Plex Sans Thai body
   Cyan accent matching brand (#58d5fb) · Generous typography
   --------------------------------------------------------------- */

:root {
  --bg: #0a0e13;
  --bg-elev: #0f141c;
  --bg-card: rgba(255, 255, 255, 0.025);
  --surface-line: rgba(255, 255, 255, 0.08);
  --ink: #f2f4fb;
  --ink-muted: rgba(242, 244, 251, 0.72);
  --ink-dim: rgba(242, 244, 251, 0.48);
  --accent: #58d5fb;
  --accent-warm: #fbbf24;
  --accent-crit: #f87171;
  --accent-good: #34d399;
  --rule: rgba(255, 255, 255, 0.08);

  --serif: "Cormorant Garamond", "Bai Jamjuree", Georgia, serif;
  --sans-display: "Manrope", "IBM Plex Sans Thai", system-ui, sans-serif;
  --sans-body: "Inter", "IBM Plex Sans Thai", system-ui, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans-body);
  font-size: 17px;
  line-height: 1.75;
  min-height: 100vh;
  /* Subtle noise texture for editorial depth */
  background-image:
    radial-gradient(at 20% 0%, rgba(88, 213, 251, 0.06) 0%, transparent 40%),
    radial-gradient(at 80% 100%, rgba(251, 191, 36, 0.04) 0%, transparent 40%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: #a5eafd; }

/* ─── Nav bar ────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  background: rgba(10, 14, 19, 0.78);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.nav-brand img { width: 28px; height: 28px; border-radius: 6px; }
.nav-brand .kicker {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  color: var(--ink-dim);
  font-size: 14px;
  letter-spacing: 0.02em;
}
.nav-cta {
  font-family: var(--sans-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  padding: 8px 16px;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 16px -4px rgba(88, 213, 251, 0.4);
}
.nav-cta:hover {
  color: var(--bg);
  transform: translateY(-1px);
  box-shadow: 0 8px 22px -6px rgba(88, 213, 251, 0.6);
}

/* ─── Layout shell ───────────────────────────────────────── */
.shell {
  max-width: 44rem;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
.shell--wide { max-width: 64rem; }

/* ─── Article header ─────────────────────────────────────── */
.hero {
  margin-bottom: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--rule);
}
.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero .eyebrow::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 24px;
  text-wrap: balance;
}
.hero .dek {
  font-family: var(--sans-body);
  font-size: 19px;
  line-height: 1.6;
  color: var(--ink-muted);
  max-width: 36rem;
  text-wrap: pretty;
}
.hero .meta {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 28px;
  font-family: var(--sans-body);
  font-size: 13px;
  color: var(--ink-dim);
}
.hero .meta .dot { color: var(--ink-dim); }
.hero .meta time { font-variant-numeric: tabular-nums; }

/* ─── Prose — article body ───────────────────────────────── */
.prose h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-top: 64px;
  margin-bottom: 20px;
  text-wrap: balance;
}
.prose h2::before {
  content: "§";
  display: inline-block;
  margin-right: 12px;
  color: var(--accent);
  font-style: italic;
  opacity: 0.7;
}
.prose h3 {
  font-family: var(--sans-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.35;
  color: var(--ink);
  margin-top: 40px;
  margin-bottom: 12px;
  letter-spacing: -0.005em;
}
.prose p {
  margin-bottom: 22px;
  color: var(--ink-muted);
  text-wrap: pretty;
}
.prose p strong { color: var(--ink); font-weight: 600; }
.prose p em { color: var(--ink); font-style: italic; }
.prose ul, .prose ol {
  margin: 0 0 28px 0;
  padding-left: 0;
  list-style: none;
}
.prose ul li, .prose ol li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  color: var(--ink-muted);
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}
.prose ol {
  counter-reset: li-counter;
}
.prose ol li {
  counter-increment: li-counter;
}
.prose ol li::before {
  content: counter(li-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
}
.prose blockquote {
  margin: 40px -12px;
  padding: 28px 36px;
  border-left: 3px solid var(--accent);
  background: linear-gradient(90deg, rgba(88, 213, 251, 0.04), transparent 80%);
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink);
  text-wrap: pretty;
}
.prose blockquote cite {
  display: block;
  margin-top: 12px;
  font-family: var(--sans-display);
  font-style: normal;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: rgba(88, 213, 251, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  color: #a5eafd;
  border: 1px solid rgba(88, 213, 251, 0.12);
}
.prose figure {
  margin: 40px 0;
}
.prose figure img {
  border-radius: 12px;
  border: 1px solid var(--rule);
  box-shadow: 0 20px 48px -20px rgba(0, 0, 0, 0.6);
}
.prose figcaption {
  margin-top: 12px;
  font-family: var(--sans-body);
  font-size: 13px;
  color: var(--ink-dim);
  text-align: center;
  font-style: italic;
}

/* ─── Specialty cards — metric, callout ──────────────────── */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 36px 0;
}
.metric {
  padding: 20px;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--rule);
}
.metric .k {
  font-family: var(--sans-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 10px;
}
.metric .v {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.metric .sub {
  font-family: var(--sans-body);
  font-size: 12px;
  color: var(--ink-dim);
  margin-top: 4px;
}
.metric--warn .v { color: var(--accent-warm); }
.metric--crit .v { color: var(--accent-crit); }
.metric--good .v { color: var(--accent-good); }

.callout {
  margin: 36px 0;
  padding: 24px 28px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(88, 213, 251, 0.06), rgba(88, 213, 251, 0.02));
  border: 1px solid rgba(88, 213, 251, 0.2);
  position: relative;
}
.callout .label {
  display: inline-block;
  font-family: var(--sans-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.callout p {
  margin: 0;
  font-size: 16px;
  color: var(--ink);
}

/* ─── Final CTA section ──────────────────────────────────── */
.final-cta {
  margin-top: 96px;
  padding: 48px 40px;
  border-radius: 20px;
  background:
    radial-gradient(at 20% 0%, rgba(88, 213, 251, 0.12) 0%, transparent 60%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.005));
  border: 1px solid var(--rule);
  text-align: center;
}
.final-cta h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 32px;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--ink);
}
.final-cta p {
  max-width: 32rem;
  margin: 0 auto 28px;
  color: var(--ink-muted);
  font-size: 16px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--bg);
  background: var(--accent);
  padding: 14px 28px;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 8px 24px -6px rgba(88, 213, 251, 0.5);
}
.btn-primary:hover {
  color: var(--bg);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -8px rgba(88, 213, 251, 0.7);
}
.btn-primary::after {
  content: "→";
  font-family: var(--serif);
  font-weight: 500;
  font-size: 18px;
}

/* ─── Related / read next ────────────────────────────────── */
.related {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--rule);
}
.related h4 {
  font-family: var(--sans-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 20px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.related-card {
  display: block;
  padding: 20px 22px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.related-card:hover {
  transform: translateY(-3px);
  border-color: rgba(88, 213, 251, 0.25);
  background: rgba(88, 213, 251, 0.04);
}
.related-card .num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}
.related-card .t {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.3;
  color: var(--ink);
  text-wrap: balance;
}

/* ─── Footer ─────────────────────────────────────────────── */
.foot {
  margin-top: 80px;
  padding: 32px 24px 40px;
  border-top: 1px solid var(--rule);
  text-align: center;
  font-family: var(--sans-body);
  font-size: 13px;
  color: var(--ink-dim);
}
.foot a { color: var(--ink-muted); margin: 0 10px; }

/* ─── Blog hub / index ───────────────────────────────────── */
.hub-hero {
  text-align: center;
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 56px;
}
.hub-hero .tag {
  display: inline-block;
  font-family: var(--sans-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hub-hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-style: italic;
  font-size: clamp(44px, 8vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 20px;
}
.hub-hero p {
  max-width: 34rem;
  margin: 0 auto;
  font-size: 18px;
  color: var(--ink-muted);
}

.post-list { display: flex; flex-direction: column; gap: 0; }
.post-item {
  display: block;
  padding: 36px 0;
  border-bottom: 1px solid var(--rule);
  transition: padding-left 0.3s ease;
}
.post-item:hover {
  padding-left: 12px;
}
.post-item .row {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 14px;
}
.post-item .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.14em;
  min-width: 48px;
}
.post-item .cat {
  font-family: var(--sans-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.post-item h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 10px;
  text-wrap: balance;
  transition: color 0.2s ease;
}
.post-item:hover h2 { color: var(--accent); }
.post-item p {
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-muted);
  max-width: 40rem;
}
.post-item .readtime {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--sans-body);
  font-size: 12px;
  color: var(--ink-dim);
}

/* ─── Small screens ──────────────────────────────────────── */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .shell { padding: 40px 20px 64px; }
  .hero { margin-bottom: 40px; padding-bottom: 28px; }
  .prose h2 { margin-top: 48px; }
  .prose blockquote { margin: 32px 0; padding: 22px 24px; font-size: 19px; }
  .final-cta { padding: 36px 24px; }
  .final-cta h3 { font-size: 26px; }
  .nav-cta { padding: 7px 14px; font-size: 11px; }
  .post-item { padding: 28px 0; }
  .post-item .row { gap: 14px; flex-wrap: wrap; }
}

/* ─── Prefers reduced motion ─────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}