/* Cairn Automation — site styles */
:root {
  --ink: #22272e;
  --slate: #3d4753;
  --stone: #75808b;
  --line: #e3e7eb;
  --bg: #ffffff;
  --bg-soft: #f6f8f9;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --accent-soft: #e6f2f0;
  --amber: #b45309;
  --amber-soft: #fdf3e7;
  --radius: 10px;
  --max: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.95);
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(8px);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; max-width: var(--max); margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand svg { display: block; }
.brand-name { font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand-name span { color: var(--accent); }

nav ul { display: flex; gap: 26px; list-style: none; align-items: center; }
nav a { text-decoration: none; color: var(--slate); font-size: 0.95rem; font-weight: 500; }
nav a:hover, nav a.active { color: var(--accent-dark); }
nav a.btn { color: #fff; }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }
.menu-toggle svg { display: block; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 11px 22px; border-radius: 8px; text-decoration: none;
  font-weight: 600; font-size: 0.95rem; border: 1px solid var(--accent);
  transition: background 0.15s ease;
}
.btn:hover { background: var(--accent-dark); }
.btn.ghost { background: transparent; color: var(--accent-dark); border-color: var(--accent); }
.btn.ghost:hover { background: var(--accent-soft); }
.btn.big { padding: 14px 28px; font-size: 1.02rem; }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 72px; }
.hero .kicker {
  color: var(--accent-dark); font-weight: 700; text-transform: uppercase;
  font-size: 0.8rem; letter-spacing: 0.08em; margin-bottom: 14px;
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem); line-height: 1.15;
  letter-spacing: -0.02em; max-width: 780px; margin-bottom: 20px;
}
.hero p.lede { font-size: 1.2rem; color: var(--slate); max-width: 640px; margin-bottom: 32px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero .note { margin-top: 18px; font-size: 0.9rem; color: var(--stone); }

/* ---------- Sections ---------- */
section { padding: 64px 0; }
section.soft { background: var(--bg-soft); }
.section-head { max-width: 680px; margin-bottom: 40px; }
.section-head h2 { font-size: 1.8rem; letter-spacing: -0.01em; margin-bottom: 10px; }
.section-head p { color: var(--slate); }

.grid { display: grid; gap: 22px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
}
.card h3 { font-size: 1.12rem; margin-bottom: 8px; }
.card p { color: var(--slate); font-size: 0.96rem; }
.card .icon { margin-bottom: 14px; color: var(--accent); }

/* steps */
.step-num {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent-dark);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; margin-bottom: 14px; font-size: 0.95rem;
}

/* ---------- Pricing ---------- */
.price-card { display: flex; flex-direction: column; }
.price-card .tier { font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent-dark); margin-bottom: 6px; }
.price-card .price { font-size: 1.9rem; font-weight: 750; letter-spacing: -0.02em; margin-bottom: 2px; }
.price-card .per { color: var(--stone); font-size: 0.9rem; margin-bottom: 16px; }
.price-card ul { list-style: none; margin: 0 0 22px; }
.price-card li { padding: 6px 0 6px 26px; position: relative; color: var(--slate); font-size: 0.95rem; }
.price-card li::before {
  content: ""; position: absolute; left: 0; top: 12px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent-soft);
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%230f766e" stroke-width="3.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"/></svg>');
  background-size: 9px; background-position: center; background-repeat: no-repeat;
}
.price-card .btn { margin-top: auto; text-align: center; }
.price-card.featured { border-color: var(--accent); border-width: 2px; position: relative; }
.badge {
  position: absolute; top: -13px; left: 22px; background: var(--accent); color: #fff;
  font-size: 0.75rem; font-weight: 700; padding: 3px 12px; border-radius: 20px;
  letter-spacing: 0.03em;
}

/* ---------- Callouts / bands ---------- */
.cta-band { background: var(--ink); color: #fff; border-radius: 14px; padding: 48px; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-band h2 { font-size: 1.6rem; letter-spacing: -0.01em; margin-bottom: 6px; }
.cta-band p { color: #b8c0c9; max-width: 520px; }

.callout {
  border-left: 4px solid var(--accent); background: var(--accent-soft);
  padding: 18px 22px; border-radius: 0 8px 8px 0; margin: 26px 0;
  color: var(--slate); font-size: 0.98rem;
}
.callout.amber { border-color: var(--amber); background: var(--amber-soft); }
.callout strong { color: var(--ink); }

/* ---------- Prose / tables ---------- */
.prose { max-width: 720px; }
.prose h2 { font-size: 1.5rem; margin: 40px 0 12px; letter-spacing: -0.01em; }
.prose h3 { font-size: 1.15rem; margin: 28px 0 8px; }
.prose p { margin-bottom: 14px; color: var(--slate); }
.prose ul { margin: 0 0 14px 22px; color: var(--slate); }
.prose li { margin-bottom: 6px; }

table.compare { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin: 20px 0; }
table.compare th, table.compare td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); }
table.compare th { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--stone); }
table.compare td:first-child { font-weight: 600; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 40px; }
.foot { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: center; }
.foot .small { color: var(--stone); font-size: 0.88rem; }
.foot nav ul { gap: 18px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  nav ul {
    display: none; position: absolute; top: 60px; right: 16px;
    background: #fff; border: 1px solid var(--line); border-radius: 10px;
    flex-direction: column; padding: 16px 22px; gap: 14px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  nav ul.open { display: flex; }
  .menu-toggle { display: block; }
  .hero { padding: 56px 0 48px; }
  .cta-band { padding: 32px; }
}