/* ARV Technology — shared stylesheet */

:root {
  --bg: #0b0c0e;
  --bg-alt: #131518;
  --text: #f4f4f2;
  --text-muted: #9ea1a8;
  --accent: #2f6feb;
  --accent-soft: #8fb4f7;
  --border: #2a2d32;
  --max: 1160px;
}

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

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

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

/* Header */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 14, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}
.logo span { color: var(--accent); }

nav.main ul { list-style: none; display: flex; gap: 32px; }
nav.main a { font-size: 0.9rem; font-weight: 500; color: var(--text-muted); transition: color 0.2s ease; }
nav.main a:hover, nav.main a.active { color: var(--text); }

.header-actions { display: flex; align-items: center; gap: 20px; }

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #f4f4f2; }
.btn-primary:hover { background: #4a84f0; }
.btn-outline { border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* Hero */
.hero { padding: 120px 0 90px; border-bottom: 1px solid var(--border); }
.hero .eyebrow {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.1;
  max-width: 820px;
  margin-bottom: 24px;
}
.hero p.lead { font-size: 1.15rem; color: var(--text-muted); max-width: 640px; margin-bottom: 36px; }
.hero .cta-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* Sections */
section { padding: 90px 0; }
section.alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head .eyebrow {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-head h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 16px;
}
.section-head p { color: var(--text-muted); font-size: 1.05rem; }

/* Services grid */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card .num { font-family: 'Space Grotesk', sans-serif; color: var(--accent); font-weight: 700; font-size: 0.9rem; margin-bottom: 16px; }
.card h3 { font-family: 'Space Grotesk', sans-serif; font-size: 1.2rem; margin-bottom: 12px; }
.card p { color: var(--text-muted); font-size: 0.95rem; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats .stat strong { display: block; font-family: 'Space Grotesk', sans-serif; font-size: 2.4rem; color: var(--accent); font-weight: 700; }
.stats .stat span { color: var(--text-muted); font-size: 0.85rem; letter-spacing: 0.04em; text-transform: uppercase; }

/* CTA band */
.cta-band { text-align: center; padding: 90px 0; }
.cta-band h2 { font-family: 'Space Grotesk', sans-serif; font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 20px; }
.cta-band p { color: var(--text-muted); max-width: 560px; margin: 0 auto 32px; }

/* Footer */
footer.site { border-top: 1px solid var(--border); padding: 56px 0 32px; background: var(--bg-alt); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-grid h4 { font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 16px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 10px; font-size: 0.95rem; }
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* About page */
.about-hero { padding: 100px 0 60px; }
.values-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.value-item { padding: 24px 0; border-top: 1px solid var(--border); }
.value-item h3 { font-family: 'Space Grotesk', sans-serif; font-size: 1.1rem; margin-bottom: 8px; color: var(--accent-soft); }
.value-item p { color: var(--text-muted); font-size: 0.95rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }

/* Contact page */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-info-item { padding: 20px 0; border-top: 1px solid var(--border); }
.contact-info-item h4 { font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 8px; }
.contact-info-item p, .contact-info-item a { font-size: 1.05rem; }

form.contact-form label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 8px; color: var(--text-muted); }
form.contact-form .field { margin-bottom: 22px; }
form.contact-form input, form.contact-form textarea {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 14px 16px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}
form.contact-form input:focus, form.contact-form textarea:focus { outline: none; border-color: var(--accent); }
form.contact-form textarea { resize: vertical; min-height: 140px; }
.form-note { font-size: 0.85rem; color: var(--text-muted); margin-top: 14px; }

/* Hero / section background photography */
.hero-image {
  position: relative;
  background-size: cover;
  background-position: center;
  isolation: isolate;
}
.hero-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,12,14,0.90) 0%, rgba(11,12,14,0.72) 55%, rgba(11,12,14,0.94) 100%);
  z-index: 0;
}
.hero-image .wrap { position: relative; z-index: 1; }

/* Image showcase grid */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.showcase-item figure { margin: 0; }
.showcase-item img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
}
.showcase-item figcaption {
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.showcase-item figcaption strong {
  display: block;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  margin-bottom: 4px;
}

/* About page feature photo */
.about-photo {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  object-fit: cover;
  max-height: 420px;
}

/* Contact page decorative photo */
.contact-photo {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  object-fit: cover;
  height: 240px;
  filter: grayscale(15%) contrast(1.05);
}

@media (max-width: 860px) {
  .showcase-grid { grid-template-columns: 1fr; }

  .grid-3 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  nav.main { display: none; }
}