/* EmailServeres marketing site. Self-contained, no framework.
   Palette: deep navy + slate + warm amber on a cool off-white.
   Contrast pairs are chosen to meet WCAG AA. */
:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #eaeef4;
  --ink: #10233b;
  --muted: #51617a;
  --border: #d6dde7;
  --navy: #123a63;
  --navy-dark: #0d2c4c;
  --navy-soft: #e6edf5;
  --amber: #b45309;
  --amber-accent: #d97706;
  --amber-500: #f59e0b;
  --amber-soft: #fdf1de;
  --on-navy: #ffffff;
  --on-navy-muted: #cad8e9;
  --shadow: 0 1px 2px rgba(16,35,59,.06), 0 10px 30px rgba(16,35,59,.08);
  --radius: 14px;
  --maxw: 1120px;
  --font: "Inter", "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 .5rem; }
h1 { font-size: clamp(2.1rem, 5vw, 3.3rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); }
h3 { font-size: 1.15rem; letter-spacing: -0.01em; }
p { margin: 0 0 1rem; }
a { color: var(--navy-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--muted); }

/* accessibility */
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--navy); color: #fff;
  padding: .6rem 1rem; border-radius: 0 0 8px 0; z-index: 100;
}
.skip-link:focus { left: 0; }
a:focus-visible, button:focus-visible, .btn:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--amber-accent); outline-offset: 2px; border-radius: 6px;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .09em; font-size: .8rem;
  font-weight: 700; color: var(--amber); margin: 0 0 .65rem;
}
.band--dark .eyebrow { color: var(--amber-500); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .7rem 1.2rem; border-radius: 10px; border: 1px solid transparent;
  font: inherit; font-weight: 600; cursor: pointer;
  transition: background .12s ease, border-color .12s ease, transform .02s ease, color .12s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-dark); }
.btn-ghost { background: transparent; color: var(--navy-dark); border-color: var(--border); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-lg { padding: .85rem 1.5rem; font-size: 1.05rem; }
.band--dark .btn-ghost { color: #fff; border-color: rgba(255,255,255,.4); }
.band--dark .btn-ghost:hover { background: rgba(255,255,255,.1); }

/* ---- header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244,246,250,.9); backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 1rem; padding: .85rem 0; }
.brand { display: inline-flex; align-items: center; gap: .55rem; font-weight: 800; font-size: 1.15rem; color: var(--navy); letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand svg { width: 30px; height: 30px; display: block; }
.nav-links { display: flex; align-items: center; gap: 1.35rem; margin-left: 1rem; }
.nav-links a { color: var(--ink); font-weight: 500; }
.nav-spacer { flex: 1; }
.nav-cta { display: flex; align-items: center; gap: .75rem; }
.nav-cta .signin { font-weight: 600; color: var(--navy-dark); }
.nav-toggle { display: none; }

/* ---- sections ---- */
section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.band--soft { background: var(--surface); border-block: 1px solid var(--border); }
.band--dark { background: var(--navy); color: var(--on-navy); }
.band--dark h2, .band--dark h3 { color: #fff; }
.band--dark p { color: var(--on-navy-muted); }
.section-head { max-width: 640px; margin-bottom: 2.25rem; }
.section-head.center { margin-inline: auto; text-align: center; }

/* hero */
.hero { padding-top: clamp(3rem, 6vw, 5rem); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero p.lede { font-size: 1.2rem; color: var(--muted); max-width: 34rem; }
.hero-cta { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.5rem; }
.hero-note { margin-top: 1rem; font-size: .92rem; color: var(--muted); }
.hero-art { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow); padding: 1.1rem; border-top: 4px solid var(--amber-accent); }
.hero-art svg { display: block; width: 100%; height: auto; border-radius: 10px; }

/* feature grid + cards */
.grid { display: grid; gap: 1.15rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.4rem; box-shadow: var(--shadow);
}
.card .ic {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 11px; margin-bottom: .85rem;
  background: var(--navy-soft); color: var(--navy);
}
.card .ic svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: .3rem; }
.card p { margin: 0; color: var(--muted); }
.band--dark .card { background: #16416e; border-color: #245489; }
.band--dark .card p { color: var(--on-navy-muted); }
.band--dark .card .ic { background: rgba(245,158,11,.18); color: var(--amber-500); }

/* checklist */
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: .7rem; }
.checks li { display: flex; gap: .6rem; align-items: flex-start; }
.checks svg { flex: none; width: 22px; height: 22px; color: var(--amber-accent); margin-top: .15rem; }

/* steps */
.steps { counter-reset: step; display: grid; gap: 1.15rem; grid-template-columns: repeat(3, 1fr); }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.4rem; }
.step .num {
  counter-increment: step; display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%; font-weight: 800;
  background: var(--amber-soft); color: var(--amber); margin-bottom: .7rem;
}
.step .num::before { content: counter(step); }

/* pricing */
.price-grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(3, 1fr); align-items: start; }
.plan { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.plan.featured { border-color: var(--navy); border-top: 4px solid var(--amber-accent); }
.plan .tag { align-self: flex-start; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--amber); background: var(--amber-soft); padding: .2rem .55rem; border-radius: 999px; margin-bottom: .6rem; }
.plan h3 { font-size: 1.3rem; }
.price { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.03em; margin: .4rem 0 .1rem; }
.price span { font-size: .95rem; font-weight: 500; color: var(--muted); }
.plan ul { list-style: none; padding: 0; margin: 1rem 0 1.4rem; display: grid; gap: .55rem; }
.plan ul li { display: flex; gap: .5rem; align-items: flex-start; color: var(--muted); }
.plan ul svg { flex: none; width: 20px; height: 20px; color: var(--amber-accent); margin-top: .2rem; }
.plan .btn { margin-top: auto; }

/* CTA band */
.cta-band { text-align: center; }
.cta-band .hero-cta { justify-content: center; }

/* prose (legal / about) */
.prose { max-width: 760px; }
.prose h2 { margin-top: 2.2rem; }
.prose h3 { margin-top: 1.6rem; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin-bottom: .4rem; }
.prose .updated { color: var(--muted); font-size: .92rem; }

/* contact form */
.form { display: grid; gap: 1rem; max-width: 560px; }
.form label { display: flex; flex-direction: column; gap: .35rem; font-weight: 600; font-size: .92rem; }
.form input, .form textarea, .form select {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; padding: .65rem .75rem; width: 100%;
}
.form textarea { resize: vertical; min-height: 130px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4rem); align-items: start; }

/* footer */
.site-footer { background: var(--surface); border-top: 1px solid var(--border); padding: 3rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; }
.footer-grid h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 .8rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.footer-grid a { color: var(--ink); }
.footer-brand p { color: var(--muted); max-width: 26rem; margin-top: .6rem; }
.new-badge { display: inline-block; font-size: .74rem; font-weight: 700; color: var(--amber); background: var(--amber-soft); border: 1px solid #f6d9a8; padding: .15rem .5rem; border-radius: 999px; margin-top: .8rem; }
.footer-bottom { border-top: 1px solid var(--border); margin-top: 2rem; padding-top: 1.5rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--muted); font-size: .9rem; }

/* responsive */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; }
  .grid-3, .steps, .price-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links, .nav-cta .signin { display: none; }
  .grid-3, .grid-2, .steps, .price-grid, .footer-grid, .form .row { grid-template-columns: 1fr; }
  .plan.featured { order: -1; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}