/* Swartz Solutions LLC — static site styles */

:root {
  --bg: #0b1220;
  --bg-alt: #111a2e;
  --surface: #162036;
  --text: #e8eef9;
  --muted: #9aacc8;
  --accent: #3b9eff;
  --accent-hover: #6bb6ff;
  --border: #24324d;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --max: 1100px;
  --narrow: 680px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

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

a:focus-visible,
.btn:focus-visible,
.logo:focus-visible,
.nav-list a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: var(--accent);
  color: #041018;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  z-index: 1000;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 18, 32, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.logo {
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  font-size: 1.05rem;
}

.logo:hover {
  color: var(--accent-hover);
}

.nav-list {
  display: flex;
  gap: 0.25rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

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

.nav-list a:hover {
  color: var(--text);
}

.hero {
  padding: 4.5rem 0 3.5rem;
  background:
    radial-gradient(ellipse 80% 60% at 15% 10%, rgba(59, 158, 255, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(56, 189, 248, 0.08), transparent 50%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: 42rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 4.5vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.tagline {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 1.125rem;
  max-width: 38rem;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #041018;
  font-weight: 700;
  text-decoration: none;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.btn:hover {
  background: var(--accent-hover);
  color: #041018;
}

.section {
  padding: 3.5rem 0;
}

.section-alt {
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 0 0 2rem;
  color: var(--muted);
  max-width: 40rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.contact-email {
  margin: 1.5rem 0 0;
  font-size: 1.35rem;
  font-weight: 600;
}

.contact-email a {
  text-decoration: none;
  word-break: break-word;
}

.contact-email a:hover {
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0 2.25rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-inner p {
  margin: 0;
}

/* 404 page */
.page-404 {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.page-404 h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 6vw, 3rem);
}

.page-404 p {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

@media (max-width: 560px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding-block: 0.75rem;
    min-height: auto;
  }

  .hero {
    padding: 3rem 0 2.5rem;
  }

  .section {
    padding: 2.75rem 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}