/* ELK Engineering LLC — site styles (plain CSS, no frameworks) */

:root {
  --ink: #1a2332;
  --muted: #5a6575;
  --line: #d8dee8;
  --bg: #ffffff;
  --bg-alt: #f4f6f9;
  --accent: #1B4D3E;
  --accent-hover: #14382c;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(26, 35, 50, 0.08);
  --max: 960px;
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

/* Background watermark logo */
body {
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("assets/elk-logo.png") center 42% / min(72vw, 560px) no-repeat;
  opacity: 0.11;
}

.site-header,
main,
.site-footer {
  position: relative;
  z-index: 1;
}


a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

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

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.wrap.narrow {
  width: min(100% - 2rem, 640px);
}


/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}

.brand-logo {
  display: block;
  height: 52px;
  width: auto;
  max-width: min(240px, 55vw);
  object-fit: contain;
}

.brand:hover .brand-logo {
  opacity: 0.92;
}

nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

/* Hero */
.hero {
  padding: 3.5rem 0 3rem;
  background: linear-gradient(180deg, rgba(244, 246, 249, 0.72) 0%, rgba(255, 255, 255, 0.55) 100%);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.tagline {
  font-style: italic;
  margin: -0.35rem 0 1rem;
  color: var(--accent);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.lede {
  margin: 0 0 1.75rem;
  color: var(--muted);
  max-width: 42rem;
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 0;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.2rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  text-decoration: none;
  border: 2px solid var(--accent);
}

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

.btn-ghost {
  background: transparent;
  color: var(--accent);
}

.btn-ghost:hover {
  background: var(--bg-alt);
  color: var(--accent-hover);
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section-alt {
  background: rgba(244, 246, 249, 0.78);
  border-block: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}

.section-intro {
  margin: 0 0 1.75rem;
  color: var(--muted);
  max-width: 36rem;
}

.section-alt p {
  color: var(--muted);
}

.section-alt strong {
  color: var(--ink);
}

.mono {
  font-family: ui-monospace, "Cascadia Code", "Segoe UI Mono", Menlo, Consolas, monospace;
  font-size: 0.95em;
}

/* Services grid */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}

.service-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--ink);
}

.service-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

/* Contact */
.contact-block {
  font-style: normal;
  margin: 0;
  padding: 1.5rem;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.contact-name {
  margin: 0 0 0.15rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.contact-block > p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.contact-list .label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.1rem;
}

.contact-list a {
  font-weight: 500;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer p {
  margin: 0 0 0.35rem;
}


@media (max-width: 520px) {
  .hero {
    padding: 2.5rem 0 2rem;
  }

  .section {
    padding: 2.25rem 0;
  }
}