/* ============================================================
   Thornfield SIM — stylesheet
   System fonts only. No external font/CDN dependencies.
   ============================================================ */

:root{
  --ink:        #142433;   /* deep slate navy - text/dark surfaces */
  --ink-soft:   #3E5468;   /* secondary text on light */
  --paper:      #F6F4EF;   /* warm paper background */
  --paper-2:    #ECE8DE;   /* card / section tint */
  --signal:     #E8622C;   /* signal orange - primary accent */
  --signal-dim: #C94F1F;   /* hover state */
  --line:       #D9D3C4;   /* hairline borders */
  --good:       #2F7A4F;   /* confirmation green, used sparingly */

  --font-display: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  --font-body:    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:    "Courier New", Courier, monospace;

  --radius: 3px;
  --max: 1120px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img{ max-width: 100%; display: block; }
a{ color: var(--signal-dim); text-decoration: none; }
a:hover{ text-decoration: underline; }
a:focus-visible, button:focus-visible, .btn:focus-visible{
  outline: 3px solid var(--signal);
  outline-offset: 2px;
}
h1,h2,h3,h4{
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.15;
  margin: 0 0 0.5em;
  font-weight: 700;
}
p{ margin: 0 0 1em; }
.wrap{ max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.visually-hidden{
  position:absolute; width:1px; height:1px; overflow:hidden;
  clip:rect(0 0 0 0); white-space:nowrap; border:0; padding:0; margin:-1px;
}

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute; left:-999px; top:0; background:var(--ink); color:#fff;
  padding:10px 16px; z-index:200;
}
.skip-link:focus{ left:12px; top:12px; }

/* ---------- Top call bar ---------- */
.callbar{
  background: var(--ink);
  color: #EDEAE0;
  font-size: 0.85rem;
}
.callbar .wrap{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:8px; padding-bottom:8px; gap:12px; flex-wrap:wrap;
}
.callbar a{ color:#fff; font-weight:600; }
.callbar .callbar-note{ color:#B9C0C6; }

/* ---------- Header ---------- */
header.site{
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky; top:0; z-index: 100;
}
header.site .wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding-top:16px; padding-bottom:16px; gap:16px; flex-wrap:wrap;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand svg{ width:34px; height:34px; flex-shrink:0; }
.brand-text{ display:flex; flex-direction:column; line-height:1.1; }
.brand-name{ font-family: var(--font-display); font-weight:700; font-size:1.35rem; color:var(--ink); }
.brand-tag{ font-size:0.7rem; letter-spacing:0.06em; text-transform:uppercase; color: var(--ink-soft); }

nav.primary ul{
  list-style:none; display:flex; gap:22px; margin:0; padding:0; flex-wrap:wrap;
}
nav.primary a{
  color: var(--ink); font-weight:600; font-size:0.95rem;
}
nav.primary a:hover{ color: var(--signal-dim); }

.header-call{
  display:flex; align-items:center; gap:10px;
  background: var(--signal); color:#fff; padding:10px 18px;
  border-radius: var(--radius); font-weight:700; white-space:nowrap;
}
.header-call:hover{ background: var(--signal-dim); text-decoration:none; color:#fff; }
.header-call svg{ width:18px; height:18px; }
.header-call small{ display:block; font-weight:400; font-size:0.68rem; opacity:0.9; }

/* ---------- Hero ---------- */
.hero{
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--line);
}
.hero-grid{
  display:grid; grid-template-columns: 1.15fr 0.85fr; gap:40px; align-items:center;
}
.eyebrow{
  display:inline-block; font-size:0.75rem; letter-spacing:0.08em; text-transform:uppercase;
  color: var(--signal-dim); font-weight:700; margin-bottom:14px;
}
.hero h1{ font-size: clamp(2rem, 4vw, 2.9rem); max-width: 16ch; }
.hero .lede{ font-size:1.08rem; color: var(--ink-soft); max-width: 46ch; }
.hero-ctas{ display:flex; gap:14px; margin-top:22px; flex-wrap:wrap; }

.btn{
  display:inline-flex; align-items:center; gap:9px;
  padding: 13px 24px; border-radius: var(--radius);
  font-weight:700; font-size:0.98rem; border:2px solid transparent; cursor:pointer;
}
.btn-primary{ background: var(--signal); color:#fff; }
.btn-primary:hover{ background: var(--signal-dim); text-decoration:none; color:#fff; }
.btn-outline{ background:transparent; border-color: var(--ink); color: var(--ink); }
.btn-outline:hover{ background: var(--ink); color:#fff; text-decoration:none; }
.btn svg{ width:18px; height:18px; }

.hero-panel{
  background:#fff; border:1px solid var(--line); border-radius: 4px; padding: 22px;
}
.hero-panel h2{ font-size:1.05rem; margin-bottom:14px; }
.hero-stat{ display:flex; justify-content:space-between; padding:10px 0; border-bottom:1px dashed var(--line); font-size:0.92rem; }
.hero-stat:last-child{ border-bottom:none; }
.hero-stat strong{ color: var(--ink); }

/* ---------- Sections ---------- */
section{ padding: 56px 0; }
.section-head{ max-width: 62ch; margin-bottom: 34px; }
.section-head .eyebrow{ margin-bottom:8px; }
.section-head p{ color: var(--ink-soft); }
.alt{ background: var(--paper-2); }

/* ---------- Deal cards ---------- */
.deal-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap:22px;
}
.deal-card{
  background:#fff; border:1px solid var(--line); border-radius:4px;
  padding:24px; display:flex; flex-direction:column; gap:12px;
  position:relative;
}
.deal-card.featured{ border-color: var(--signal); box-shadow: 0 0 0 1px var(--signal); }
.deal-badge{
  position:absolute; top:-12px; right:20px; background: var(--signal); color:#fff;
  font-size:0.7rem; font-weight:700; text-transform:uppercase; letter-spacing:0.05em;
  padding:5px 10px; border-radius:2px;
}
.deal-name{ font-family: var(--font-display); font-size:1.15rem; font-weight:700; }
.deal-price{ font-size:2.1rem; font-weight:700; color: var(--ink); font-family: var(--font-display); }
.deal-price span{ font-size:0.95rem; font-weight:400; color: var(--ink-soft); }
.deal-specs{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:8px; }
.deal-specs li{ display:flex; gap:8px; align-items:flex-start; font-size:0.92rem; color: var(--ink-soft); }
.deal-specs svg{ width:16px; height:16px; flex-shrink:0; margin-top:3px; color: var(--good); }
.deal-note{ font-size:0.78rem; color: var(--ink-soft); border-top:1px solid var(--line); padding-top:10px; margin-top:auto; }
.deal-card .btn{ justify-content:center; margin-top:6px; }

/* ---------- Steps ---------- */
.steps{ display:grid; grid-template-columns: repeat(3,1fr); gap:26px; counter-reset: step; }
.step{ background:#fff; border:1px solid var(--line); border-radius:4px; padding:22px; }
.step .num{
  display:inline-flex; align-items:center; justify-content:center;
  width:34px; height:34px; border-radius:50%; background: var(--ink); color:#fff;
  font-weight:700; margin-bottom:14px; font-family: var(--font-display);
}
.step h3{ font-size:1.05rem; }
.step p{ color: var(--ink-soft); font-size:0.93rem; margin-bottom:0; }

/* ---------- Comparison / info table ---------- */
.info-table{ width:100%; border-collapse:collapse; background:#fff; border:1px solid var(--line); }
.info-table th, .info-table td{ text-align:left; padding:12px 16px; border-bottom:1px solid var(--line); font-size:0.92rem; }
.info-table th{ background: var(--paper-2); font-family: var(--font-display); }
.info-table tr:last-child td{ border-bottom:none; }

/* ---------- Network chips (generic, non-branded) ---------- */
.chip-row{ display:flex; flex-wrap:wrap; gap:10px; }
.chip{
  border:1px solid var(--line); background:#fff; padding:8px 14px; border-radius: 999px;
  font-size:0.85rem; color: var(--ink-soft);
}

/* ---------- FAQ ---------- */
.faq details{
  background:#fff; border:1px solid var(--line); border-radius:4px; padding:16px 18px; margin-bottom:12px;
}
.faq summary{
  cursor:pointer; font-weight:700; font-family: var(--font-display); font-size:1.02rem;
  list-style:none; display:flex; justify-content:space-between; align-items:center; gap:12px;
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after{ content:"+"; font-size:1.4rem; color: var(--signal-dim); flex-shrink:0; }
.faq details[open] summary::after{ content:"–"; }
.faq p{ color: var(--ink-soft); margin-top:10px; margin-bottom:0; font-size:0.93rem; }

/* ---------- Trust strip ---------- */
.trust-strip{
  display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  padding: 26px 0;
}
.trust-item{ display:flex; align-items:center; gap:10px; font-size:0.9rem; color: var(--ink-soft); max-width:26ch; }
.trust-item svg{ width:26px; height:26px; color: var(--signal-dim); flex-shrink:0; }

/* ---------- CTA band ---------- */
.cta-band{
  background: var(--ink); color:#fff; text-align:center; padding: 52px 0;
}
.cta-band h2{ color:#fff; }
.cta-band p{ color:#C9CDD1; max-width:52ch; margin:0 auto 22px; }
.cta-band .btn-primary{ font-size:1.1rem; padding:16px 30px; }

/* ---------- Footer ---------- */
footer.site{ background: var(--ink); color:#B9C0C6; padding-top:44px; }
footer.site .wrap{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap:30px; padding-bottom:30px; }
footer.site h4{ color:#fff; font-size:0.9rem; text-transform:uppercase; letter-spacing:0.05em; margin-bottom:14px; font-family: var(--font-body); }
footer.site ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px; }
footer.site a{ color:#B9C0C6; font-size:0.9rem; }
footer.site a:hover{ color:#fff; }
footer.site p{ color:#8F979D; font-size:0.85rem; }
.footer-bottom{
  border-top:1px solid #2A3B4A; padding: 18px 0 26px; font-size:0.8rem; color:#8F979D;
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
}
.footer-bottom a{ color:#8F979D; }

/* ---------- Legal / content pages ---------- */
.legal-page main .wrap{ max-width: 820px; }
.legal-page h2{ margin-top:2em; font-size:1.3rem; }
.legal-page h3{ margin-top:1.3em; font-size:1.05rem; }
.legal-page ul, .legal-page ol{ color: var(--ink-soft); }
.legal-page p{ color: var(--ink-soft); }
.updated-note{
  background: var(--paper-2); border:1px solid var(--line); padding:12px 16px; border-radius:4px;
  font-size:0.88rem; color: var(--ink-soft); margin-bottom: 30px;
}
.page-header{ padding: 44px 0 8px; border-bottom:1px solid var(--line); background: var(--paper-2); }
.page-header .eyebrow{ margin-bottom:6px; }
.page-header h1{ font-size:2.1rem; }
.page-header p{ color: var(--ink-soft); max-width:60ch; }

/* ---------- Contact page ---------- */
.contact-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:34px; }
.contact-card{ background:#fff; border:1px solid var(--line); border-radius:4px; padding:26px; }
.contact-card h3{ font-size:1.05rem; }
.contact-method{ display:flex; gap:12px; align-items:flex-start; margin-bottom:18px; }
.contact-method svg{ width:22px; height:22px; color: var(--signal-dim); flex-shrink:0; margin-top:2px; }
.contact-method h4{ margin:0 0 3px; font-size:0.95rem; font-family: var(--font-body); }
.contact-method p{ margin:0; font-size:0.88rem; color: var(--ink-soft); }

/* ---------- 404 ---------- */
.error-page{ text-align:center; padding: 100px 0; }
.error-page h1{ font-size:4rem; color: var(--signal); }

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .hero-grid{ grid-template-columns:1fr; }
  .deal-grid{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns:1fr; }
  footer.site .wrap{ grid-template-columns: 1fr 1fr; }
  .contact-grid{ grid-template-columns:1fr; }
  nav.primary{ order:3; width:100%; }
  nav.primary ul{ justify-content:flex-start; }
}
@media (max-width: 560px){
  footer.site .wrap{ grid-template-columns: 1fr; }
  .callbar .wrap{ flex-direction:column; align-items:flex-start; gap:4px; }
  .trust-strip{ flex-direction:column; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.01ms !important; transition-duration:0.01ms !important; }
}