/* ============================================================
   salty-syntax.com — shared stylesheet v3
   Light professional editorial theme
   Palette: warm paper, ink-navy, slate-blue, burnt-orange
   Type: JetBrains Mono (headings/UI) + Inter (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;700&family=Inter:ital,wght@0,300;0,400;0,500;0,600;1,400&display=swap');

/* ── Design tokens ── */
:root {
  /* Surfaces */
  --bg:          #F5F3EE;
  --surface:     #FFFFFF;
  --surface2:    #F0EDE7;
  --surface3:    #EAE6DF;

  /* Ink */
  --ink:         #1C2B3A;
  --ink-mid:     #4A5568;
  --ink-dim:     #8A94A0;
  --ink-faint:   #B8BEC6;

  /* Accents */
  --blue:        #2563A8;
  --blue-dim:    #1E4F8A;
  --blue-pale:   #EBF2FB;
  --orange:      #E8440A;
  --orange-pale: #FDF0EB;

  /* Structure */
  --border:      #E2DDD6;
  --border-mid:  #CCC7BF;
  --rule:        #D6D1C9;

  /* Type */
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --sans: 'Inter', system-ui, sans-serif;

  /* Layout */
  --max-w:  720px;
  --nav-h:  58px;
}

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* ── Links — underline draws in from left ── */
a {
  color: var(--blue);
  text-decoration: none;
  background-image: linear-gradient(var(--blue), var(--blue));
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 0.22s ease, color 0.15s;
}
a:hover {
  color: var(--blue-dim);
  background-size: 100% 1px;
}

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

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(245,243,238,0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
}

.nav-inner {
  width: 100%;
  max-width: calc(var(--max-w) + 48px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  background: none;
}

.nav-logo:hover {
  color: var(--ink);
  background: none;
}

.nav-logo span.accent { color: var(--blue); }

/* Blinking cursor — kept, colour updated */
.cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--blue);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1.1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  background: none;
  padding-bottom: 3px;
  border-bottom: 1.5px solid transparent;
  transition: color 0.15s, border-color 0.2s;
}

.nav-links a:hover {
  color: var(--blue);
  border-bottom-color: var(--blue);
  background: none;
}

.nav-links a.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ── Page wrapper ── */
.page {
  max-width: calc(var(--max-w) + 48px);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 80px;
  padding: 32px 24px;
  background: var(--bg);
}

.footer-inner {
  max-width: calc(var(--max-w) + 48px);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
}

.footer-links { display: flex; gap: 20px; }

.footer-links a {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  background: none;
  border: none;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--blue);
  background: none;
  border: none;
}

/* ── Shared components ── */

/* Tag / pill */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.63rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-pale);
  border: 1px solid rgba(37,99,168,0.2);
  padding: 3px 9px;
  border-radius: 2px;
  background-image: none;
  transition: background 0.15s, color 0.15s;
}

.tag:hover { background: none; color: var(--blue); }

/* Divider */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 44px 0;
}

/* Section eyebrow */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 12px;
}

/* Stat block */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 36px 0;
}

.stat-cell {
  background: var(--surface);
  padding: 24px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle top-border accent appears on load via animation */
.stat-cell::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.stat-cell.visible::before {
  transform: scaleX(1);
}

.stat-number {
  display: block;
  font-family: var(--mono);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--sans);
  font-size: 0.72rem;
  color: var(--ink-mid);
  line-height: 1.45;
}

/* Visual wrapper */
.visual-wrap {
  margin: 40px 0;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
}

.visual-caption {
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 10px 16px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}

/* Data callout */
.data-callout {
  background: var(--blue-pale);
  border: 1px solid rgba(37,99,168,0.18);
  border-left: 3px solid var(--blue);
  padding: 20px 24px;
  margin: 32px 0;
  font-family: var(--sans);
  font-size: 0.9rem;
  color: var(--ink-mid);
  line-height: 1.7;
}

.data-callout strong { color: var(--ink); }

/* Reference list */
.refs {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 2px solid var(--ink);
}

.refs h3 {
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 16px;
}

.refs ul { list-style: none; }

.refs li {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--ink-mid);
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.55;
  display: flex;
  gap: 10px;
}

.refs li::before {
  content: '→';
  font-family: var(--mono);
  color: var(--ink-faint);
  flex-shrink: 0;
  font-size: 0.8rem;
  margin-top: 1px;
}

.refs li a {
  color: var(--ink-mid);
  background-image: linear-gradient(var(--ink-mid), var(--ink-mid));
  background-size: 0% 1px;
  transition: background-size 0.2s, color 0.15s;
}

.refs li a:hover {
  color: var(--blue);
  background-size: 100% 1px;
  background-image: linear-gradient(var(--blue), var(--blue));
}

/* Disclaimer */
.disclaimer {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-dim);
  font-style: italic;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  line-height: 1.65;
}

/* ── Scroll-reveal utility ── */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 0.63rem; letter-spacing: 0.07em; }
  .stat-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}