/* ============================================================
   The Paper Trail — Shared Design System
   Used across: index.html, how-we-think.html, about.html,
                methodology.html, search.html, state.html
   ============================================================ */

:root {
  --bg: #F9F7F4;
  --bg2: #F2EFE9;
  --surf: #FFFFFF;
  --surf2: #EDE9E2;
  --amber: #C8900A;
  --amber-bright: #E8A800;
  --amber-dim: rgba(200,144,10,0.07);
  --amber-mid: rgba(200,144,10,0.22);
  --red: #B03020;
  --red-dim: rgba(176,48,32,0.07);
  --red-mid: rgba(176,48,32,0.25);
  --ink: #1A1510;
  --ink-2: #5C4F3D;
  --ink-3: #9C8B74;
  --ink-4: #C5B9A8;
  --border: #DDD8CF;
  --border-2: #E8E3DA;
  --font-head: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

/* 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(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 60px;
  padding: 0 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(249,247,244,0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 1px;
  text-decoration: none;
}
.nav-logo-top {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: .2em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.nav-logo-bottom {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .01em;
}
.nav-logo-bottom span { color: var(--amber); }
.nav-tag {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .16em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-link {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-2);
  text-decoration: none;
  transition: color .2s;
}
.nav-link:hover { color: var(--amber); }
.nav-cta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--surf);
  background: var(--ink);
  padding: 8px 18px;
  text-decoration: none;
  font-weight: 600;
  transition: background .2s;
}
.nav-cta:hover { background: var(--amber); }

/* FOOTER */
footer {
  padding: 36px 48px;
  border-top: 2px solid var(--ink);
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.foot-logo {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--bg);
}
.foot-logo span { color: var(--amber-bright); }
.foot-sub {
  font-family: var(--mono);
  font-size: 9px;
  color: rgba(249,247,244,0.35);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-top: 2px;
}
.foot-links { display: flex; gap: 24px; flex-wrap: wrap; }
.foot-links a {
  font-family: var(--mono);
  font-size: 10px;
  color: rgba(249,247,244,0.4);
  text-decoration: none;
  letter-spacing: .06em;
  text-transform: uppercase;
  transition: color .2s;
}
.foot-links a:hover { color: var(--amber-bright); }

/* SHARED BUTTONS */
.btn-primary {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--surf);
  background: var(--ink);
  padding: 13px 26px;
  text-decoration: none;
  font-weight: 600;
  transition: background .2s;
  display: inline-block;
}
.btn-primary:hover { background: var(--amber); }
.btn-ghost {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid var(--border);
  background: transparent;
  padding: 13px 26px;
  text-decoration: none;
  transition: all .2s;
  display: inline-block;
}
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

/* SHARED MOBILE — nav + footer */
@media(max-width:768px){
  nav { padding: 0 20px; }
  .nav-tag { display: none; }
  .nav-links { gap: 16px; }
  footer { padding: 28px 20px; flex-direction: column; align-items: flex-start; }
}