/* ==========================================================================
   SVS Tech Solutions LLC — site stylesheet
   No framework. Plain CSS, mobile-first, system font stack.
   ========================================================================== */

:root {
  --navy: #0C2C60;
  --blue-accent: #184480;
  --green: #488860;
  --bg: #F0F8F8;
  --surface: #FFFFFF;
  --text: #4A5568;
  --border: #E2E8F0;
  --max-width: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--blue-accent); }
a:hover { color: var(--navy); }

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

/* ---------- Header / Nav ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
}

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

.brand img {
  height: 44px;
  width: auto;
}

.brand {
  text-decoration: none;
}

nav.primary-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

nav.primary-nav a {
  color: var(--navy);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

nav.primary-nav a:hover,
nav.primary-nav a[aria-current="page"] {
  border-bottom: 2px solid var(--green);
}

/* ---------- Hero ---------- */

.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.hero h1 {
  color: var(--navy);
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  line-height: 1.2;
  margin: 0 0 20px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.hero p.lede {
  max-width: 640px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
}

.btn-primary {
  background: var(--navy);
  color: #fff;
}

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

/* ---------- Sections ---------- */

section {
  padding: 56px 0;
}

section.alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-heading {
  text-align: center;
  margin: 0 0 40px;
}

.section-heading h2 {
  color: var(--navy);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 12px;
}

.section-heading .accent-rule {
  width: 44px;
  height: 4px;
  background: var(--green);
  border-radius: 2px;
  margin: 0 auto;
}

/* ---------- Service cards (home page) ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 820px) {
  .card-grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 24px;
}

.card .accent-rule {
  width: 36px;
  height: 4px;
  background: var(--green);
  border-radius: 2px;
  margin-bottom: 16px;
}

.card h3 {
  color: var(--navy);
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  font-size: 0.97rem;
}

/* ---------- Platform sections (services page) ---------- */

.platform {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}

.platform:last-of-type {
  border-bottom: none;
}

.platform h2 {
  color: var(--navy);
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  margin: 0 0 8px;
}

.platform .accent-rule {
  width: 44px;
  height: 4px;
  background: var(--green);
  border-radius: 2px;
  margin: 0 0 24px;
}

.engagement-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

@media (max-width: 700px) {
  .engagement-grid { grid-template-columns: 1fr; }
}

.engagement-grid .item h4 {
  color: var(--navy);
  margin: 0 0 6px;
  font-size: 1.02rem;
}

.engagement-grid .item p {
  margin: 0;
  font-size: 0.95rem;
}

/* ---------- Contact page ---------- */

.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 40px 32px;
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.contact-box .email-link {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  text-decoration: none;
  margin: 16px 0 4px;
  word-break: break-word;
}

.contact-box .email-link:hover {
  color: var(--blue-accent);
}

/* ---------- CTA band ---------- */

.cta-band {
  text-align: center;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-band h2 {
  color: var(--navy);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  margin: 0 0 20px;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 32px 0 40px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--text);
}

.site-footer p {
  margin: 4px 0;
}

/* ---------- Utility ---------- */

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}