/* AreaTrace — polished design system
   Palette: deep navy + electric teal, warm-neutral surface
   Type:    Inter / DM Sans (system fallback) for UI; serif accents for headlines
*/
:root{
  --navy-950:#061025;
  --navy-900:#0a1a36;
  --navy-800:#102347;
  --navy-700:#1a3266;
  --navy-600:#274786;
  --navy-500:#3a63a8;
  --teal-500:#0fb5ba;
  --teal-400:#22d3d8;
  --teal-300:#5eead4;
  --teal-50:#e8fbfb;
  --amber-400:#f5b13d;
  --rose-500:#e1525a;
  --paper:#fafaf7;
  --surface:#ffffff;
  --surface-2:#f4f3ee;
  --line:#e6e3da;
  --line-soft:#f0eee6;
  --ink:#0b1626;
  --ink-2:#2b3a52;
  --ink-3:#54637a;
  --ink-mute:#7a8699;
  --shadow-sm:0 1px 2px rgba(11,22,38,.05),0 1px 1px rgba(11,22,38,.04);
  --shadow:0 1px 2px rgba(11,22,38,.06),0 12px 32px rgba(11,22,38,.08);
  --shadow-lg:0 16px 48px rgba(10,26,54,.18);
  --r-xs:6px;
  --r-sm:10px;
  --r:14px;
  --r-lg:20px;
  --r-xl:28px;
  --grad-hero:linear-gradient(135deg,#061025 0%,#0a1a36 50%,#102347 100%);
  --grad-accent:linear-gradient(120deg,#0fb5ba 0%,#5eead4 100%);
}

@import url('https://rsms.me/inter/inter.css');

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Inter","DM Sans",-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;
  font-feature-settings:"cv02","cv03","cv04","cv11";
  background:var(--paper);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  font-size:16px;
}
@supports(font-variation-settings:normal){
  body{font-family:"Inter var","Inter","DM Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
}

h1,h2,h3,h4{color:var(--ink);margin:0 0 .5em;line-height:1.18;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(1.85rem,4vw,2.6rem);letter-spacing:-.025em}
h2{font-size:clamp(1.4rem,2.5vw,1.75rem);margin-top:2em}
h3{font-size:1.15rem;margin-top:1.5em;letter-spacing:-.015em}
h4{font-size:1rem;letter-spacing:0}
p{margin:0 0 1em;color:var(--ink-2)}
.prose p{font-size:1.025rem;color:var(--ink-2)}
.prose ul li, .prose ol li{margin:.35em 0;color:var(--ink-2)}
a{color:var(--navy-700);text-decoration:none;border-bottom:1px solid transparent;transition:color .15s, border-color .15s}
a:hover{color:var(--teal-500);border-bottom-color:currentColor}
small{color:var(--ink-3);font-size:.85rem}
code{background:var(--surface-2);padding:.1em .45em;border-radius:5px;font-size:.92em;font-family:"JetBrains Mono","SF Mono",Menlo,Consolas,monospace;color:var(--navy-800)}
strong{color:var(--ink);font-weight:600}

.container{max-width:1180px;margin:0 auto;padding:0 28px}

/* Header */
.site-header{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(180%) blur(8px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 28px;gap:24px}
.brand{display:flex;align-items:center;gap:14px;color:var(--ink);border-bottom:none}
.brand:hover{color:var(--ink);border-bottom:none}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:11px;
  background:var(--grad-hero);color:#fff;
  font-weight:800;font-size:1.05rem;letter-spacing:-.02em;
  box-shadow:0 4px 14px rgba(10,26,54,.18),inset 0 1px 0 rgba(255,255,255,.12);
  position:relative;
}
.brand-mark.small{width:32px;height:32px;font-size:.9rem;border-radius:9px}
.brand-dot{color:var(--teal-400);margin:0 1px}
.brand-name{font-weight:700;font-size:1.18rem;letter-spacing:-.02em;color:var(--ink)}
.brand-tag{font-size:.78rem;color:var(--ink-mute);font-weight:500;letter-spacing:.01em;display:none}
@media(min-width:640px){.brand-tag{display:inline}}
.nav{display:flex;align-items:center;gap:6px}
.nav a{
  color:var(--ink-2);font-weight:500;font-size:.95rem;
  padding:8px 14px;border-radius:8px;border-bottom:none;
  transition:background .15s, color .15s;
}
.nav a:hover{background:var(--surface-2);color:var(--navy-700);border-bottom:none}

/* Main + footer */
.site-main{padding:36px 0 80px;min-height:60vh}
.site-footer{background:var(--navy-950);color:#c5cfe1;padding:64px 0 32px;margin-top:64px}
.site-footer .container.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1.6fr;gap:48px}
@media(max-width:780px){.site-footer .container.footer-inner{grid-template-columns:1fr;gap:32px}}
.site-footer h4{color:#fff;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px}
.site-footer p{color:#94a4c2;font-size:.92rem;margin:0 0 .6em}
.site-footer ul{margin:0;padding:0;list-style:none}
.site-footer ul.two-col{columns:2;column-gap:24px}
.site-footer li{margin:0 0 8px}
.site-footer a{color:#c5cfe1;font-size:.92rem;border-bottom:none}
.site-footer a:hover{color:var(--teal-300);border-bottom:none}
.foot-base{margin-top:40px;padding-top:24px;border-top:1px solid #1a2c4d}
.foot-base p{color:#7d8aa3;font-size:.82rem;margin:0}
.foot-col p{max-width:34ch}

/* Hero */
.hero{
  display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;
  background:var(--grad-hero);
  color:#fff;
  border-radius:var(--r-xl);
  padding:64px 56px;
  margin:8px 0 48px;
  box-shadow:var(--shadow-lg);
  position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(800px 400px at 88% 20%, rgba(15,181,186,.32), transparent 60%),
    radial-gradient(600px 300px at 10% 80%, rgba(94,234,212,.18), transparent 60%);
  pointer-events:none;
}
.hero-text{position:relative;z-index:1}
.hero h1{color:#fff;font-size:clamp(2rem,3.6vw,3.05rem);line-height:1.1;letter-spacing:-.03em;margin-bottom:14px}
.hero h1 em{font-style:normal;background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lede{color:#c5d3ec;font-size:1.08rem;line-height:1.55;max-width:46ch;margin-bottom:28px}
.hero-img{position:relative;z-index:1;display:flex;justify-content:center}
.hero-img img{max-width:100%;height:auto;border-radius:var(--r-lg);box-shadow:0 24px 64px rgba(0,0,0,.32)}
@media(max-width:880px){
  .hero{grid-template-columns:1fr;padding:40px 28px;gap:32px}
  .hero-img{order:-1;max-width:360px;margin:0 auto}
}

/* Lookup form (hero) */
.lookup{background:rgba(255,255,255,.07);backdrop-filter:blur(6px);padding:18px;border-radius:var(--r);border:1px solid rgba(255,255,255,.1)}
.lookup label{display:block;color:#c5d3ec;font-size:.82rem;font-weight:500;margin-bottom:8px;letter-spacing:.02em}
.lookup-row{display:flex;gap:8px}
.lookup input[type=text]{
  flex:1;min-width:0;
  padding:14px 18px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);
  background:#fff;color:var(--ink);
  font-size:1.05rem;font-family:inherit;font-weight:500;
  outline:none;
  transition:border-color .15s, box-shadow .15s;
}
.lookup input[type=text]:focus{border-color:var(--teal-400);box-shadow:0 0 0 4px rgba(34,211,216,.28)}
.lookup button{
  padding:14px 26px;border-radius:var(--r-sm);
  border:0;cursor:pointer;
  background:var(--grad-accent);color:#06223e;
  font-size:1rem;font-weight:700;font-family:inherit;letter-spacing:-.005em;
  transition:transform .12s, box-shadow .12s, filter .12s;
  box-shadow:0 6px 18px rgba(15,181,186,.34);
}
.lookup button:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 10px 24px rgba(15,181,186,.42)}
.lookup .hint{margin:12px 0 0;color:#a9bbd9;font-size:.85rem}
.lookup .hint a{color:var(--teal-300);font-weight:600;border-bottom:1px dotted currentColor}
.lookup .hint a:hover{color:#fff;border-bottom-color:#fff}

/* Card grid (homepage stats) */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:32px 0}
.info-card{
  background:var(--surface);border:1px solid var(--line);
  padding:22px 24px;border-radius:var(--r);
  box-shadow:var(--shadow-sm);
  position:relative;overflow:hidden;
}
.info-card::before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:var(--grad-accent)}
.info-card h2{font-size:1.7rem;margin:0 0 6px;color:var(--navy-800);letter-spacing:-.025em}
.info-card p{margin:0;font-size:.92rem;color:var(--ink-3)}

/* Code grid (area-code tiles) */
.code-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px;margin:18px 0 8px}
.code-tile{
  display:flex;flex-direction:column;gap:4px;
  padding:18px 18px 16px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);
  color:var(--ink);border-bottom:1px solid var(--line);
  transition:border-color .15s, transform .15s, box-shadow .15s;
  text-decoration:none;
}
.code-tile:hover{border-color:var(--teal-500);border-bottom-color:var(--teal-500);transform:translateY(-2px);box-shadow:var(--shadow);color:var(--ink)}
.code-num{font-size:1.7rem;font-weight:800;color:var(--navy-800);letter-spacing:-.04em;line-height:1}
.code-region{font-size:.78rem;color:var(--teal-500);font-weight:700;letter-spacing:.05em;text-transform:uppercase;margin-top:2px}
.code-cities{font-size:.85rem;color:var(--ink-3);margin-top:2px;line-height:1.35}

/* Province grid */
.province-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:18px 0}
.province-tile{
  display:flex;flex-direction:column;gap:4px;
  padding:18px 20px;border-radius:var(--r-sm);
  background:var(--surface);border:1px solid var(--line);color:var(--ink);
  transition:border-color .15s, transform .15s, box-shadow .15s;
}
.province-tile:hover{border-color:var(--teal-500);transform:translateY(-2px);box-shadow:var(--shadow);color:var(--ink)}
.province-tile strong{font-size:1.05rem;color:var(--navy-800);font-weight:700}
.province-tile small{color:var(--ink-3)}

/* City grids and pills */
.city-quick{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.city-quick-tile{display:flex;flex-direction:column;gap:2px;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);color:var(--ink);transition:all .15s}
.city-quick-tile:hover{border-color:var(--teal-500);background:var(--teal-50);color:var(--ink)}
.city-quick-tile strong{font-weight:600}
.city-quick-tile span{color:var(--ink-3);font-size:.85rem}

.city-list,.carrier-list{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.city-pill{display:inline-flex;flex-direction:column;gap:1px;padding:10px 14px;background:var(--surface);border:1px solid var(--line);border-radius:999px;color:var(--ink);font-size:.92rem;transition:all .15s}
.city-pill:hover{border-color:var(--teal-500);background:var(--teal-50);color:var(--ink)}
.city-pill strong{font-weight:600}
.city-pill small{color:var(--ink-3);font-size:.78rem}
.carrier-pill{display:inline-flex;align-items:center;padding:8px 16px;background:var(--navy-800);color:#fff;border-radius:999px;font-size:.88rem;font-weight:500;border-bottom:none;transition:background .15s}
.carrier-pill:hover{background:var(--teal-500);color:var(--ink);border-bottom:none}

/* Crumbs */
.crumbs{font-size:.85rem;color:var(--ink-3);margin:0 0 18px}
.crumbs a{color:var(--ink-3);border-bottom:none}
.crumbs a:hover{color:var(--teal-500)}
.crumbs strong{color:var(--ink-2);font-weight:600}

/* Page head */
.page-head{display:flex;align-items:center;gap:24px;margin:8px 0 32px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.page-head h1{margin:0 0 6px}
.page-head .lede{color:var(--ink-3);font-size:1.05rem;margin:0;max-width:60ch}
.big-code{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:96px;height:96px;padding:0 20px;
  background:var(--grad-hero);color:#fff;
  font-size:2.4rem;font-weight:800;letter-spacing:-.04em;
  border-radius:var(--r-lg);
  box-shadow:0 12px 32px rgba(10,26,54,.18);
  position:relative;overflow:hidden;
}
.big-code::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 80% 0%,rgba(94,234,212,.32),transparent 60%);pointer-events:none}
.big-code.accent{background:var(--grad-accent);color:#06223e;text-shadow:none;box-shadow:0 12px 32px rgba(15,181,186,.32)}
.province-badge,.city-badge,.carrier-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:72px;height:72px;border-radius:18px;
  background:var(--grad-accent);color:#06223e;
  font-size:1.6rem;font-weight:800;letter-spacing:-.02em;
  box-shadow:0 8px 24px rgba(15,181,186,.28);
}
.city-badge{background:var(--grad-hero);color:#fff;box-shadow:0 8px 24px rgba(10,26,54,.22)}
.carrier-badge{background:var(--navy-800);color:#fff;box-shadow:0 8px 24px rgba(10,26,54,.22)}

/* Data grid (area-code "at a glance" + map) */
.data-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:22px;margin:24px 0}
@media(max-width:760px){.data-grid{grid-template-columns:1fr}}
.data-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.data-block h2{margin-top:0;font-size:1.05rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.kv{display:grid;grid-template-columns:max-content 1fr;gap:8px 18px;margin:8px 0 0}
.kv dt{color:var(--ink-3);font-size:.88rem;font-weight:500}
.kv dd{margin:0;color:var(--ink);font-size:.95rem;font-weight:500}

.map-frame{position:relative;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line)}
.map-frame img{display:block;width:100%;height:auto}
.map-cta{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);background:rgba(10,26,54,.92);color:#fff;padding:8px 14px;border-radius:999px;font-size:.82rem;font-weight:600;letter-spacing:.01em}

/* Related/overlay */
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin-top:14px}
.related-tile{display:flex;flex-direction:column;gap:2px;padding:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);color:var(--ink)}
.related-tile:hover{border-color:var(--teal-500);background:var(--teal-50);color:var(--ink)}
.related-tile .big{font-size:1.5rem;font-weight:800;color:var(--navy-800);letter-spacing:-.03em}
.related-tile small{color:var(--ink-3)}

/* Tables */
.codes-table{width:100%;border-collapse:collapse;margin:18px 0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-size:.94rem}
.codes-table th{background:var(--surface-2);text-align:left;padding:14px 18px;color:var(--ink-2);font-weight:600;font-size:.82rem;letter-spacing:.05em;text-transform:uppercase;border-bottom:1px solid var(--line)}
.codes-table td{padding:13px 18px;border-bottom:1px solid var(--line-soft);color:var(--ink-2)}
.codes-table tr:last-child td{border-bottom:0}
.codes-table tr:hover td{background:var(--surface-2)}
.codes-table.compare th:first-child{background:var(--navy-800);color:#fff}
.codes-table.compare td:first-child{font-weight:600;color:var(--ink);background:var(--surface-2)}

/* Prefix grid */
.prefix-grid{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 18px}
.prefix-pill{display:inline-flex;align-items:center;padding:6px 12px;background:var(--surface);border:1px solid var(--line);border-radius:8px;font-family:"JetBrains Mono","SF Mono",Menlo,Consolas,monospace;font-size:.86rem;color:var(--navy-800);font-weight:600;letter-spacing:-.01em}

/* Generic link list */
.link-list{margin:8px 0 0;padding:0 0 0 18px}
.link-list li{margin:.5em 0;color:var(--ink-2)}
.link-list li a{font-weight:500}

/* Sidebar ad placeholder */
.sidebar-ad{margin:32px 0;min-height:0;display:none}

/* Lookup page form */
.lookup-form{background:var(--surface);border:1px solid var(--line);padding:32px;border-radius:var(--r);box-shadow:var(--shadow-sm);max-width:560px;margin:24px 0}
.lookup-form label{display:block;font-weight:600;margin-bottom:10px;color:var(--ink-2)}
.lookup-form input[type=text]{width:100%;padding:14px 18px;border:1px solid var(--line);border-radius:var(--r-sm);font-size:1.05rem;font-family:inherit;outline:none;transition:border-color .15s, box-shadow .15s}
.lookup-form input[type=text]:focus{border-color:var(--teal-500);box-shadow:0 0 0 4px rgba(15,181,186,.18)}
.lookup-form button{margin-top:14px;padding:14px 26px;background:var(--navy-800);color:#fff;border:0;border-radius:var(--r-sm);font-weight:700;font-size:1rem;cursor:pointer;font-family:inherit;transition:background .15s, transform .12s}
.lookup-form button:hover{background:var(--navy-700);transform:translateY(-1px)}
.result-card{background:var(--teal-50);border:1px solid var(--teal-300);padding:24px;border-radius:var(--r);margin:24px 0}
.result-card h3{margin-top:0;color:var(--navy-800)}

/* Section headings inside long content */
section{margin:32px 0}
section.prose{max-width:78ch}
section.prose h2{margin-top:1.6em}
section.prose h3{margin-top:1.6em;color:var(--navy-800)}

/* Two-col extras */
.two-col{columns:2;column-gap:24px}

/* Print niceties */
@media print{
  .site-header,.site-footer,.lookup,.sidebar-ad{display:none}
  body{background:#fff;color:#000}
  a{color:#000;text-decoration:underline}
}