/* ───────────────────────────────────────────────────────────────────────
   route.css — Navetta "Route Diagram" design system (shared foundation)
   The single source of truth for grounds, type, buttons, nav/footer and
   browser surfaces across the public site. Page-specific layout lives in
   each template's own <style>. Mirrors DESIGN.md.
   Load order (in <head>): fonts.css → route.css → page <style>.
   ─────────────────────────────────────────────────────────────────────── */

:root{
  /* dark world (nav, footer, dark bands) */
  --ink:#0b1020; --ink-2:#121a30; --ink-3:#0e1526;
  --line-d:rgba(173,186,220,.16); --line-d2:rgba(173,186,220,.28);
  --on-ink:#f3f1ea; --on-ink-mut:#a6b0c8; --on-ink-dim:#8893ae;
  /* route colors (luminous on dark) */
  --route-a:#8b7bff; --route-b:#ff6a3d; --route-c:#2fd4b0; --violet:#7c5cff;
  /* warm world (reading) */
  --paper:#f4ede1; --paper-2:#ece3d3; --paper-3:#fbf7ef;
  --warm-ink:#1a1813; --warm-mut:#6d655a; --warm-dim:#685f50;
  --line-w:#ddd2c0; --line-w2:#cabfa9;
  --accent-w:#4c1d95; --accent-wh:#5b21b6; --coral-w:#b23a1e; --teal-ws:#157561;
  /* type */
  --display:'Archivo',system-ui,sans-serif;
  --mono:'Overpass Mono',ui-monospace,monospace;
  --serif:'Instrument Serif',Georgia,serif;
  --maxw:1120px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--warm-ink);
  font-family:var(--display);font-weight:400;font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
::selection{background:var(--route-b);color:#fff}
:focus-visible{outline:2px solid var(--accent-w);outline-offset:3px;border-radius:3px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* scrollbar (warm default) */
*{scrollbar-width:thin;scrollbar-color:#c3b7a1 var(--paper)}
*::-webkit-scrollbar{width:11px;height:11px}
*::-webkit-scrollbar-track{background:var(--paper)}
*::-webkit-scrollbar-thumb{background:#c3b7a1;border-radius:6px;border:2px solid var(--paper)}
*::-webkit-scrollbar-thumb:hover{background:#ad9f86}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 2.5rem}
@media(max-width:640px){.wrap{padding:0 1.25rem}}

/* ───────────── station button ───────────── */
.station{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--mono);font-weight:600;
  font-size:.76rem;letter-spacing:.04em;text-transform:uppercase;padding:.6rem 1.05rem;border-radius:999px;
  background:var(--accent-w);color:#fff;cursor:pointer;border:none;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,background .18s;
  box-shadow:0 8px 22px -12px rgba(30,16,60,.6)}
.station .dot{width:7px;height:7px;border-radius:50%;background:#fff}
.station:hover{transform:translateY(-1px);box-shadow:0 13px 28px -12px rgba(30,16,60,.7);background:var(--accent-wh)}
.station.lg{font-size:.82rem;padding:.8rem 1.4rem}
.station.ghost{background:transparent;color:var(--warm-ink);box-shadow:none;border:1px solid var(--line-w2)}
.station.ghost .dot{background:var(--accent-w)}
.station.ghost:hover{background:var(--paper-2);transform:translateY(-1px)}
/* on-dark variant (nav/footer/dark bands) */
.on-dark .station,.station.on-dark{background:var(--route-a);color:#140f2e;box-shadow:0 8px 22px -12px rgba(4,6,16,.85)}
.on-dark .station .dot,.station.on-dark .dot{background:#140f2e}
.on-dark .station:hover,.station.on-dark:hover{background:#9d8cff;box-shadow:0 13px 28px -12px rgba(4,6,16,.95)}
.on-dark .station.ghost,.station.ghost.on-dark{background:transparent;color:var(--on-ink);border:1px solid var(--line-d2)}
.on-dark .station.ghost .dot{background:var(--route-a)}
.on-dark .station.ghost:hover{background:rgba(173,186,220,.08)}

/* ───────────── nav (dark) ───────────── */
.nav{position:sticky;top:0;z-index:100;background:rgba(11,16,32,.82);
  backdrop-filter:blur(14px) saturate(1.3);border-bottom:1px solid var(--line-d)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:.95rem 2.5rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem}
@media(max-width:640px){.nav-in{padding:.85rem 1.25rem}}
.logo{display:inline-flex;align-items:center;gap:.5rem;flex-shrink:0;color:var(--on-ink)}
.logo-mark{display:block;color:var(--route-a)}
.logo-name{font-family:var(--display);font-weight:700;font-size:1.12rem;letter-spacing:-.02em}
.logo-name .e{color:var(--on-ink-mut)}
.nav-links{display:flex;align-items:center;gap:.15rem}
.nav-link{font-family:var(--mono);font-size:.74rem;letter-spacing:.03em;text-transform:uppercase;
  color:var(--on-ink-mut);padding:.5rem .7rem;border-radius:6px;transition:color .15s,background .15s}
.nav-link:hover,.nav-link.active{color:var(--on-ink);background:rgba(173,186,220,.08)}
.nav-sep{width:1px;height:16px;background:var(--line-d2);margin:0 .5rem}
.nav-ghost{font-family:var(--mono);font-size:.74rem;letter-spacing:.03em;text-transform:uppercase;
  color:var(--on-ink-mut);padding:.5rem .7rem;transition:color .15s}
.nav-ghost:hover{color:var(--on-ink)}
.nav-user{display:flex;align-items:center;gap:.7rem}
.nav-user-name{font-family:var(--mono);font-size:.72rem;letter-spacing:.02em;color:var(--on-ink-dim);text-transform:uppercase}
.hamb{display:none;flex-direction:column;gap:5px;width:40px;height:40px;align-items:center;justify-content:center;
  background:none;border:1px solid var(--line-d2);border-radius:8px;cursor:pointer}
.hamb span{width:18px;height:2px;background:var(--on-ink-mut);border-radius:2px}
@media(max-width:900px){.nav-links{display:none}.hamb{display:flex}}

/* mobile drawer */
.drawer-ov{display:none;position:fixed;inset:0;z-index:200;background:rgba(5,8,16,.6)}
.drawer-ov.open{display:block}
.drawer{position:absolute;top:0;right:0;bottom:0;width:300px;max-width:84vw;background:var(--ink-2);
  border-left:1px solid var(--line-d);display:flex;flex-direction:column;padding:1.25rem 1.3rem;gap:.2rem;
  transform:translateX(100%);transition:transform .28s cubic-bezier(.3,.8,.3,1)}
.drawer-ov.open .drawer{transform:translateX(0)}
.drawer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;color:var(--on-ink)}
.drawer-x{background:none;border:none;color:var(--on-ink-mut);cursor:pointer;line-height:0;padding:4px;display:inline-flex;border-radius:6px}
.drawer-x:hover{color:var(--on-ink);background:rgba(173,186,220,.08)}
.drawer a.nav-link{font-size:.82rem;padding:.7rem .6rem}
.drawer .station{margin-top:.6rem;justify-content:center}
.drawer-rule{height:1px;background:var(--line-d);margin:.7rem 0}

/* ───────────── reading type ───────────── */
.page-head{padding:clamp(3rem,7vh,5rem) 0 clamp(1.5rem,3vh,2.5rem)}
.page-h{font-family:var(--display);font-weight:900;font-size:clamp(2.3rem,5vw,3.9rem);
  line-height:1.02;letter-spacing:-.035em;margin:0 0 1.1rem;text-wrap:balance;max-width:16ch}
.page-h .ser{font-family:var(--serif);font-weight:400;font-style:italic;color:var(--accent-w);letter-spacing:-.01em}
.page-sub{font-size:1.15rem;line-height:1.55;color:var(--warm-mut);max-width:54ch;margin:0}
.lede{font-family:var(--display);font-weight:800;font-size:clamp(1.85rem,3.9vw,2.9rem);
  line-height:1.06;letter-spacing:-.03em;margin:0 0 1.1rem;max-width:18ch;text-wrap:balance}
h2.sec-h{font-family:var(--display);font-weight:800;font-size:clamp(1.6rem,3.4vw,2.4rem);
  line-height:1.08;letter-spacing:-.03em;margin:0 0 1rem}
h3.sub-h{font-family:var(--display);font-weight:700;font-size:1.3rem;letter-spacing:-.02em;margin:0 0 .5rem;line-height:1.25}
.body{font-size:1.08rem;line-height:1.66;color:var(--warm-mut);max-width:65ch}
.body strong{color:var(--warm-ink);font-weight:600}
.kicker{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--warm-dim)}

/* prose (legal / long-form) */
.prose{max-width:68ch;color:var(--warm-mut);font-size:1.04rem;line-height:1.72}
.prose h2{font-family:var(--display);font-weight:700;font-size:1.35rem;letter-spacing:-.02em;color:var(--warm-ink);margin:2.4rem 0 .7rem}
.prose h3{font-family:var(--display);font-weight:600;font-size:1.08rem;color:var(--warm-ink);margin:1.6rem 0 .5rem}
.prose p{margin:0 0 1.1rem}
.prose strong{color:var(--warm-ink);font-weight:600}
.prose a{color:var(--accent-w);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
.prose ul{margin:0 0 1.1rem;padding-left:1.2rem}
.prose li{margin:0 0 .5rem}
.prose .meta{font-family:var(--mono);font-size:.74rem;letter-spacing:.03em;text-transform:uppercase;color:var(--warm-dim)}

/* soft-rect card */
.card{background:var(--paper-3);border:1px solid var(--line-w);border-radius:14px;
  box-shadow:0 1px 0 var(--line-w),0 24px 50px -34px rgba(40,30,15,.38)}

/* dark band (for closers / intros that want the night ground) */
.band-dark{background:var(--ink);color:var(--on-ink)}
.band-dark .body{color:var(--on-ink-mut)}

/* ───────────── footer (dark) ───────────── */
.foot{background:var(--ink-3);border-top:1px solid var(--line-d);padding:2.5rem 0;color:var(--on-ink)}
.foot-in{max-width:var(--maxw);margin:0 auto;padding:0 2.5rem;display:flex;align-items:center;
  justify-content:space-between;flex-wrap:wrap;gap:1.2rem}
@media(max-width:640px){.foot-in{padding:0 1.25rem}}
.foot .logo{color:var(--on-ink)}
.foot-links{display:flex;gap:1.5rem;flex-wrap:wrap}
.foot-links a{font-family:var(--mono);font-size:.74rem;letter-spacing:.03em;text-transform:uppercase;color:var(--on-ink-dim);transition:color .15s}
.foot-links a:hover{color:var(--on-ink-mut)}
.foot-copy{max-width:var(--maxw);margin:1.4rem auto 0;padding:1.4rem 2.5rem 0;border-top:1px solid var(--line-d);
  font-family:var(--mono);font-size:.72rem;color:var(--on-ink-dim);text-align:center;letter-spacing:.02em}
.foot-copy a{color:var(--on-ink-mut)}
@media(max-width:640px){.foot-copy{padding-left:1.25rem;padding-right:1.25rem}}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}