/* ─────────────────────────────────────────────────────
   power-explained — shared design system
   ───────────────────────────────────────────────────── */

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400;1,600&family=DM+Mono:wght@400;500&family=Lora:ital,wght@0,400;0,500;1,400&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design tokens ── */
:root {
  --ink:        #1a1714;
  --ink-rgb:    26,23,20;
  --paper:      #f2ece0;
  --paper-mid:  #e8dfc8;
  --paper-dark: #ddd3b8;
  --paper-rgb:  242,236,224;
  --red:        #a0291c;
  --red-rgb:    160,41,28;
  --red-dim:    #7a2015;
  --red-warm:   #d4a088;
  --rule:       rgba(var(--ink-rgb),0.18);
  --rule-strong: rgba(var(--ink-rgb),0.45);

  --display: 'Cormorant Garamond', Georgia, serif;
  --body:    'Lora', Georgia, serif;
  --mono:    'DM Mono', monospace;

  --max:    680px;
  --gutter: clamp(1.5rem, 5vw, 4rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:        #f0e8d8;
    --ink-rgb:    240,232,216;
    --paper:      #1e1b17;
    --paper-mid:  #28231d;
    --paper-dark: #242019;
    --paper-rgb:  30,27,23;
    --red:        #d4604f;
    --red-rgb:    212,96,79;
    --red-dim:    #b84d3d;
    --red-warm:   #c47a60;
    --rule:       rgba(var(--ink-rgb),0.12);
    --rule-strong: rgba(var(--ink-rgb),0.3);
  }
}

/* ── Base ── */
html { font-size: 18px; scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ── Masthead ── */
header {
  border-bottom: 2px solid var(--ink);
  padding: 1.25rem var(--gutter) 1rem;
}

header .inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-name {
  font-family: var(--display);
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}
.site-name:hover { color: var(--red); }

.series-tag {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(var(--ink-rgb),0.4);
  white-space: nowrap;
}

/* ── Article layout ── */
.article-wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ── Kicker ── */
.kicker {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: clamp(2rem, 5vw, 3.5rem) 0 1.5rem;
}

.kicker-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
}

.kicker-rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.kicker-num {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: rgba(var(--ink-rgb),0.35);
}

/* ── Headline + dek ── */
h1 {
  font-family: var(--display);
  font-size: clamp(2.6rem, 8vw, 4.8rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}

.dek {
  font-family: var(--display);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-style: italic;
  font-weight: 400;
  line-height: 1.5;
  color: rgba(var(--ink-rgb),0.75);
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2rem;
}

/* ── Body text ── */
.body-text {
  padding-top: clamp(2rem, 5vw, 3.5rem);
}

.body-text p {
  margin-bottom: 1.3rem;
  font-size: 1rem;
  line-height: 1.8;
}

.body-text strong { font-weight: 700; color: var(--ink); }
.body-text em     { font-style: italic; }

.body-text h2 {
  font-family: var(--display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 3rem 0 1rem;
  scroll-margin-top: 2rem;
}

/* ── Pull quote ── */
.pull {
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding: 1.75rem 0;
  margin: 3rem 0;
  text-align: center;
}

.pull p {
  font-family: var(--display);
  font-size: clamp(1.3rem, 3.5vw, 1.9rem);
  font-style: italic;
  line-height: 1.3;
}

.pull p strong { font-style: normal; font-weight: 700; }

/* ── Callout box ── */
.callout {
  background: var(--paper-mid);
  border-left: 3px solid var(--paper-dark);
  padding: 1.5rem 1.75rem;
  margin: 2.5rem 0;
}

.callout-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(var(--ink-rgb),0.45);
  display: block;
  margin-bottom: 0.75rem;
}

.callout p {
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 0.75rem;
  color: rgba(var(--ink-rgb),0.85);
}

.callout p:last-child { margin-bottom: 0; }

/* ── Inline links ── */
.xl {
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid rgba(var(--red-rgb),0.28);
  transition: border-color 0.15s;
}
.xl:hover { border-bottom-color: var(--red); }

/* ── Article footer ── */
.article-footer {
  border-top: 1px solid var(--rule);
  margin-top: 4rem;
  padding: 2rem 0 3rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.back-link {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.back-link::before { content: '←'; }
.back-link:hover { color: var(--red); }

.next-link {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--red);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.next-link::after { content: '→'; }
.next-link:hover { text-decoration: underline; }

.series-note {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(var(--ink-rgb),0.4);
}

/* ── Section kicker (thinker pages) ── */
.section-kicker {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
  margin-top: 3.5rem;
}

.section-num {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
}

.section-rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ── Footnotes ── */
.footnotes {
  border-top: 1px solid var(--rule);
  margin-top: 4rem;
  padding-top: 2rem;
}

.footnotes-label {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(var(--ink-rgb),0.4);
  margin-bottom: 1.5rem;
  display: block;
}

.footnotes ol {
  list-style: decimal;
  padding-left: 1.5rem;
}

.footnotes li {
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(var(--ink-rgb),0.7);
  margin-bottom: 1rem;
}

.footnotes li a {
  color: var(--red);
  text-decoration: none;
}

sup a {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--red);
  text-decoration: none;
  vertical-align: super;
}

/* ── Image captions ── */
.case-image { margin: 2rem 0 2.5rem; }
.case-image img { width: 100%; display: block; border: 1px solid var(--rule); }
.case-image figcaption {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(var(--ink-rgb),0.45);
  padding: 0.6rem 0 0;
  line-height: 1.5;
}
.case-image figcaption a { color: inherit; text-decoration: underline; }

/* ── Entrance animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.kicker    { animation: fadeUp 0.5s ease both; animation-delay: 0.1s; }
h1         { animation: fadeUp 0.6s ease both; animation-delay: 0.2s; }
.dek       { animation: fadeUp 0.6s ease both; animation-delay: 0.35s; }
.body-text { animation: fadeUp 0.6s ease both; animation-delay: 0.45s; }