/* tyedavis.co — clean, modern, single-file stylesheet */
:root{
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --line:#e2e8f0;
  --accent:#0e7490;
  --accent-dark:#155e75;
  --accent-soft:#ecfeff;
  --radius:14px;
  --max:1120px;
  --shadow:0 6px 24px rgba(15,23,42,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{font-weight:800;font-size:1.15rem;letter-spacing:-.02em;color:var(--ink)}
.brand span{color:var(--accent)}
.nav-links{display:flex;gap:26px;list-style:none;flex-wrap:wrap}
.nav-links a{color:var(--ink-2);font-size:.95rem;font-weight:500}
.nav-links a:hover{color:var(--accent-dark);text-decoration:none}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:6px 12px;font-size:1rem;cursor:pointer}

/* ---------- hero ---------- */
.hero{padding:88px 0 72px;background:linear-gradient(180deg,var(--accent-soft),#fff 78%)}
.hero h1{font-size:clamp(2.2rem,5.2vw,3.6rem);line-height:1.08;letter-spacing:-.03em;font-weight:800;max-width:20ch}
.hero .sub{margin-top:22px;font-size:1.2rem;color:var(--ink-2);max-width:56ch}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.btn{
  display:inline-block;padding:12px 24px;border-radius:999px;font-weight:600;font-size:.98rem;
  border:1px solid var(--accent);transition:all .15s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{background:#fff;color:var(--accent-dark)}
.btn-ghost:hover{background:var(--accent-soft)}

/* ---------- sections ---------- */
section{padding:72px 0}
section.alt{background:var(--bg-soft)}
.section-head{max-width:64ch;margin-bottom:40px}
.section-head h2{font-size:clamp(1.7rem,3.4vw,2.3rem);letter-spacing:-.02em;line-height:1.15}
.section-head p{margin-top:12px;color:var(--ink-2)}
.kicker{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:var(--accent);margin-bottom:10px}

/* ---------- cards & grids ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.card h3{font-size:1.12rem;margin-bottom:6px}
.card p{color:var(--ink-2);font-size:.97rem}
.card .role{font-weight:600;color:var(--accent-dark);font-size:.92rem;margin-bottom:8px}
.card .logo{height:34px;width:auto;object-fit:contain;margin-bottom:16px}
.badge{
  display:inline-block;background:var(--accent-soft);color:var(--accent-dark);
  font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 10px;border-radius:999px;margin-bottom:12px;
}

/* ---------- GTM list ---------- */
.check-list{list-style:none;display:grid;gap:14px}
.check-list li{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 22px 18px 52px;position:relative;box-shadow:var(--shadow);font-size:1rem;color:var(--ink-2)
}
.check-list li::before{
  content:"✓";position:absolute;left:20px;top:16px;color:var(--accent);font-weight:800;
}
.callout{
  margin-top:28px;background:var(--ink);color:#e2e8f0;border-radius:var(--radius);padding:30px;
}
.callout h3{color:#fff;margin-bottom:8px}
.callout p{color:#cbd5e1}

/* ---------- work examples ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.filter-btn{
  border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 18px;
  font-size:.9rem;font-weight:600;color:var(--ink-2);cursor:pointer;
}
.filter-btn:hover{border-color:var(--accent)}
.filter-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}
.work-card{display:flex;flex-direction:column;gap:6px}
.work-card .meta{display:flex;gap:8px;align-items:center;font-size:.8rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.work-card h3{font-size:1.05rem;line-height:1.35}
.work-card h3 a{color:var(--ink)}
.work-card h3 a:hover{color:var(--accent-dark)}
.work-card .host{margin-top:auto;padding-top:10px;font-size:.85rem;color:var(--muted)}
.work-card.hidden{display:none}

/* ---------- story ---------- */
.story p{max-width:68ch;color:var(--ink-2);margin-bottom:18px;font-size:1.05rem}
.story .signoff{font-size:1.25rem;font-weight:700;color:var(--ink);margin-top:26px}

/* ---------- contact / footer ---------- */
.contact-box{text-align:center;max-width:640px;margin:0 auto}
.contact-box h2{font-size:2rem;letter-spacing:-.02em}
.contact-box p{color:var(--ink-2);margin:14px 0 26px}
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:.9rem}
.footer-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- case studies ---------- */
.cs-hero{padding:56px 0 8px}
.cs-hero img.hero-img{width:100%;max-height:440px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.cs-hero .cs-logo{height:44px;width:auto;object-fit:contain;margin:26px 0 6px}
.cs-hero h1{font-size:clamp(1.9rem,4vw,2.7rem);letter-spacing:-.02em;line-height:1.15}
.cs-hero .tagline{font-size:1.15rem;color:var(--ink-2);margin-top:10px;max-width:60ch}
.back-link{display:inline-block;margin-bottom:22px;font-weight:600;font-size:.95rem}
.cs-section{padding:34px 0 6px}
.cs-section h2{font-size:1.5rem;letter-spacing:-.01em;margin-bottom:14px}
.cs-section h3{font-size:1.08rem;margin:22px 0 6px}
.cs-section p{color:var(--ink-2);max-width:70ch;margin-bottom:12px}
.cs-section ul{margin:6px 0 14px 22px;color:var(--ink-2)}
.cs-section li{margin-bottom:6px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px;margin:10px 0 8px}
.stat{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center}
.stat .num{font-size:1.7rem;font-weight:800;color:var(--accent-dark);letter-spacing:-.02em}
.stat .lbl{color:var(--ink-2);font-size:.92rem;margin-top:4px}
.cs-nav{border-top:1px solid var(--line);margin-top:48px;padding:28px 0 56px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .grid-2,.grid-3{grid-template-columns:1fr}
  .nav-links{display:none;flex-direction:column;gap:14px;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:18px 24px}
  .nav-links.open{display:flex}
  .nav-toggle{display:block}
  .hero{padding:56px 0 48px}
  section{padding:52px 0}
}