/* ===== Tokens ===== */
:root {
  --ink: #142521;
  --ink-soft: #3d5751;
  --teal-deep: #1f4d45;
  --teal: #2d6e63;
  --teal-mid: #3f8a7c;
  --mint: #5fbfa9;
  --bg: #f5f7f6;
  --surface: #ffffff;
  --line: #dbe6e2;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--teal-deep);
  line-height: 1.15;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); font-weight: 600; }
h3 { font-size: 1.25rem; font-weight: 600; }

p { margin: 0 0 1em; max-width: 62ch; }

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-deep); }

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

.eyebrow {
  color: var(--mint);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 0.6em;
}

.lead { color: var(--ink-soft); font-size: 1.1rem; }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.85em 1.6em;
  border-radius: 4px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--teal-deep);
  color: #fff;
}
.btn-primary:hover { background: var(--teal); color: #fff; }

.btn-ghost {
  background: transparent;
  border-color: var(--teal-deep);
  color: var(--teal-deep);
}
.btn-ghost:hover { background: var(--teal-deep); color: #fff; }

/* ===== Header ===== */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--teal-deep);
}
.brand-mark { display: block; object-fit: contain; }
.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}
.brand-dash { color: var(--mint); }

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a.active,
.main-nav a:hover { color: var(--teal-deep); border-bottom-color: var(--mint); }

.main-nav a.nav-cta {
  background: var(--teal-deep);
  color: #fff;
  padding: 8px 16px;
  border-radius: 4px;
  border-bottom: none;
}
.main-nav a.nav-cta:hover { background: var(--teal); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--teal-deep);
  display: block;
}

/* ===== Hero ===== */
.hero { padding: 72px 0 88px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-actions { display: flex; gap: 14px; margin-top: 1.6em; flex-wrap: wrap; }

.hero-visual { color: var(--teal-mid); }
.circuit-svg { width: 100%; height: auto; }
.circuit-nodes circle { color: var(--mint); }

/* ===== Pillars ===== */
.pillars { padding: 72px 0; background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 32px;
  border-top: 1px solid var(--line);
}
.pillar {
  padding: 28px 28px 28px 0;
  border-right: 1px solid var(--line);
}
.pillar:last-child { border-right: none; padding-right: 0; }
.pillar:not(:first-child) { padding-left: 28px; }
.pillar h3 { color: var(--teal); }
.pillar p { color: var(--ink-soft); font-size: 0.98rem; }

/* ===== CTA band ===== */
.cta-band { padding: 64px 0; }
.cta-band-inner { text-align: left; max-width: 640px; }
.cta-band-inner .btn { margin-top: 1em; }

/* ===== Page header (inner pages) ===== */
.page-header { padding: 64px 0 32px; }

/* ===== Services list ===== */
.services-list { padding: 24px 0 72px; }
.service-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 24px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
}
.service-row:last-child { border-bottom: 1px solid var(--line); }
.service-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--mint);
}
.service-body ul { color: var(--ink-soft); padding-left: 1.2em; margin: 0.8em 0 0; }
.service-body li { margin-bottom: 0.3em; }

/* ===== About ===== */
.about-content { padding: 24px 0 72px; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.check-list { list-style: none; padding: 0; margin: 0; color: var(--ink-soft); }
.check-list li {
  padding: 10px 0 10px 26px;
  border-top: 1px solid var(--line);
  position: relative;
}
.check-list li:before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 8px;
  background: var(--mint);
}

/* ===== Contact ===== */
.contact-section { padding: 24px 0 80px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.contact-form label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--teal-deep);
  margin-top: 14px;
}
.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 10px 12px;
  border: 1.5px solid var(--line);
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--mint);
}
.contact-form button { margin-top: 20px; align-self: flex-start; }

.alert {
  padding: 12px 14px;
  border-radius: 4px;
  font-size: 0.95rem;
  margin-bottom: 8px;
}
.alert-success { background: #e4f4ef; color: var(--teal-deep); border: 1px solid var(--mint); }
.alert-error { background: #fbeaea; color: #8a2c2c; border: 1px solid #e3a0a0; }

.contact-info h2 { margin-bottom: 0.6em; }
.contact-info p { color: var(--ink-soft); }

/* ===== Error pages ===== */
.error-page { padding: 96px 0; text-align: left; }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); margin-top: 40px; }
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding: 40px 24px 24px;
  flex-wrap: wrap;
}
.footer-brand p { color: var(--ink-soft); max-width: 40ch; margin-top: 8px; font-size: 0.92rem; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--ink-soft); font-size: 0.92rem; }
.footer-bottom {
  padding: 16px 24px 28px;
  color: var(--ink-soft);
  font-size: 0.82rem;
  border-top: 1px solid var(--line);
  margin-top: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 320px; }
  .pillars-grid { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--line); padding: 24px 0; }
  .pillar:not(:first-child) { padding-left: 0; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; padding: 14px 24px; border-bottom: 1px solid var(--line); }
  .main-nav a.nav-cta { border-radius: 0; text-align: center; }
  .nav-toggle { display: flex; }
}