/* ═══════════════════════════════════════════
   PLAIN SIGHT — Global Styles
   Mobile-first, single-column layout
   ═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400&family=Source+Sans+3:wght@300;400;500;600;700&display=swap');

:root {
  --navy: #0B1F3A;
  --navy-deep: #061425;
  --navy-mid: #132D4F;
  --teal: #2A9D8F;
  --teal-dark: #1F7A6F;
  --teal-light: #40B4A6;
  --slate: #8B9DAF;
  --warm: #E07A4F;
  --cream: #F8F6F1;
  --white: #FFFFFF;
  --ink: #1A1A1A;
  --ink-light: #4A4A4A;
  --border: #D8D2C8;
  --bg-exhibit: #F8FAFC;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Source Sans 3', Georgia, serif;
  background: var(--cream);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* ─── HEADER ─── */
.site-header {
  background: var(--navy-deep);
  border-bottom: 3px solid var(--teal);
  padding: 20px 20px 16px;
}

.site-header a { text-decoration: none; }

.masthead {
  font-family: 'Playfair Display', serif;
  font-size: 26px;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.5px;
}

.masthead span { color: var(--teal-light); }

.header-tagline {
  font-size: 12px;
  color: var(--slate);
  margin-top: 4px;
  letter-spacing: 0.2px;
}

.header-nav {
  display: flex;
  gap: 20px;
  margin-top: 14px;
}

.header-nav a {
  color: var(--slate);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.header-nav a:hover { color: var(--white); }

/* ─── MAIN CONTENT COLUMN ─── */
.content {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ─── HOME PAGE ─── */
.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--teal);
  margin-top: 40px;
  margin-bottom: 16px;
}

.post-card {
  background: var(--white);
  border: 1px solid var(--border);
  margin-bottom: 28px;
  overflow: hidden;
}

.post-card:hover {
  box-shadow: 0 4px 20px rgba(11, 31, 58, 0.08);
}

.post-card-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--navy-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.post-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-card-cover .placeholder {
  color: var(--slate);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.post-card-body {
  padding: 20px;
}

.post-number {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 6px;
}

.post-card-body h2,
.post-card-body h3 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.25;
  margin-bottom: 10px;
}

.post-card-body h2 { font-size: 24px; }
.post-card-body h3 { font-size: 20px; }

.post-card-body h2 a,
.post-card-body h3 a {
  color: inherit;
  text-decoration: none;
}

.post-card-body h2 a:hover,
.post-card-body h3 a:hover { color: var(--teal); }

.post-card-body .deck {
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-light);
  margin-bottom: 12px;
}

.post-card-body .meta {
  font-size: 12px;
  color: var(--slate);
  font-weight: 500;
}

/* ─── ABOUT STRIP ─── */
.about-strip {
  background: var(--navy-deep);
  padding: 36px 24px;
  margin-top: 48px;
}

.about-strip h3 {
  font-family: 'Playfair Display', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.about-strip p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--slate);
  margin-bottom: 16px;
}

.about-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.about-links a {
  color: var(--teal-light);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.about-links a:hover { color: var(--white); }

/* ─── FOOTER ─── */
.site-footer {
  padding: 28px 20px;
  font-size: 11px;
  color: var(--slate);
  border-top: 1px solid var(--border);
  margin-top: 48px;
  text-align: center;
  line-height: 1.8;
}

.site-footer a { color: var(--teal); text-decoration: none; }

/* ═══════════════════════════════════════════
   POST PAGE STYLES
   ═══════════════════════════════════════════ */

.post-header {
  padding-top: 36px;
  margin-bottom: 32px;
}

.post-header .post-number {
  margin-bottom: 10px;
}

.post-header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 30px;
  font-weight: 900;
  color: var(--navy);
  line-height: 1.2;
  margin-bottom: 10px;
}

.post-header .subtitle {
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  font-weight: 400;
  font-style: italic;
  color: var(--ink-light);
  line-height: 1.4;
  margin-bottom: 12px;
}

.post-header .meta {
  font-size: 13px;
  color: var(--slate);
  font-weight: 500;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 36px 0;
}

.post-body h2 {
  font-family: 'Playfair Display', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.3;
  margin-top: 40px;
  margin-bottom: 16px;
}

.post-body p {
  font-size: 16px;
  line-height: 1.72;
  color: var(--ink);
  margin-bottom: 18px;
}

.post-body p.lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink-light);
}

.post-body strong { font-weight: 700; }
.post-body em { font-style: italic; }

.post-body blockquote {
  border-left: 3px solid var(--teal);
  padding: 12px 20px;
  margin: 28px 0;
  background: rgba(42, 157, 143, 0.04);
}

.post-body blockquote p {
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  font-style: italic;
  line-height: 1.55;
  color: var(--navy);
  margin-bottom: 0;
}

/* ─── EXHIBITS ─── */
.exhibit {
  background: var(--bg-exhibit);
  border: 1px solid #E2E8F0;
  border-radius: 4px;
  padding: 20px 16px 16px;
  margin: 28px -4px;
}

.exhibit-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-dark);
  margin-bottom: 4px;
}

.exhibit-title {
  font-family: 'Playfair Display', serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.3;
  margin-bottom: 4px;
}

.exhibit-subtitle {
  font-size: 12px;
  color: var(--slate);
  margin-bottom: 12px;
}

.exhibit-insight {
  background: var(--navy);
  color: var(--white);
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
  border-radius: 3px;
  margin-bottom: 16px;
}

.exhibit-chart {
  width: 100%;
  min-height: 280px;
}

.exhibit-source {
  font-size: 10px;
  color: var(--slate);
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
}

/* ─── PREDICTION CARD ─── */
.prediction-card {
  background: var(--navy-deep);
  color: var(--white);
  padding: 24px 20px;
  margin: 36px 0;
  border-left: 4px solid var(--warm);
}

.prediction-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--white);
}

.prediction-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--slate);
  margin-bottom: 8px;
}

.prediction-card strong { color: var(--white); }

/* ─── POST FOOTER ─── */
.post-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.post-footer p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
  margin-bottom: 8px;
}

.post-footer a { color: var(--teal); text-decoration: none; }

/* ─── DESKTOP ENHANCEMENTS ─── */
@media (min-width: 768px) {
  .site-header {
    padding: 24px 32px 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
  }

  .header-nav { margin-top: 0; }

  .masthead { font-size: 30px; }

  .content { padding: 0 24px; }

  .post-header h1 { font-size: 36px; }

  .post-body p { font-size: 17px; }

  .exhibit {
    padding: 24px 20px 18px;
    margin: 32px 0;
  }
}