:root {
  --bg: #08111f;
  --panel: #0c1629;
  --text: #e6edf3;
  --muted: #9fb0c3;
  --brand: #14b8a6;
  --brand-light: #22d3ee;
  --border: #1e293b;
  --card: #0f1b30;
}

* {
  box-sizing: border-box;
}

body, html {
  margin: 0; padding: 0;
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover, a:focus {
  color: var(--brand-light);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Skip to main content */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 10px;
  top: 10px;
  width: auto;
  height: auto;
  background: var(--text);
  color: var(--bg);
  padding: 8px;
  z-index: 9999;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(8, 17, 31, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  height: 40px;
  width: auto;
}

.menu {
  display: flex;
  gap: 20px;
}

.menu a {
  color: var(--text);
  font-weight: 600;
  padding: 8px;
}

.btn, .btn-outline {
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  user-select: none;
  border: none;
  display: inline-block;
  text-decoration: none;
  color: #0b1322;
  background-color: var(--brand);
  transition: background-color 0.25s ease;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--brand);
  color: var(--brand);
}

.btn:hover, .btn-outline:hover {
  background-color: var(--brand-light);
  color: #0b1322;
  border-color: var(--brand-light);
}

/* Hero */

.hero {
  padding: 6rem 2rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.125rem;
  margin-bottom: 2rem;
}

.cta {
  margin-bottom: 2rem;
}

.cta a, .cta button {
  margin: 0 0.5rem;
}

/* Section */

.section {
  padding: 4rem 2rem;
}

.section.alt {
  background-color: var(--panel);
}

/* Lists and layouts */

ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.checklist {
  list-style: none;
  padding-left: 0;
}

.checklist li::before {
  content: '✓';
  color: var(--brand);
  margin-right: 0.5rem;
}

/* Contact form */

.contact-form {
  max-width: 600px;
  margin: 2rem auto;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.contact-form input, .contact-form button {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: none;
  font-size: 1rem;
}

.contact-form input {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  width: 100%;
}

.contact-form button {
  background-color: var(--brand);
  color: #0b1322;
  font-weight: 700;
  cursor: pointer;
  grid-column: 1 / -1;
}

.contact-form button:hover {
  background-color: var(--brand-light);
}

/* Footer */

.site-footer {
  background-color: var(--panel);
  color: var(--muted);
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.875rem;
}

.footer-logo {
  height: 30px;
  vertical-align: middle;
  margin-right: 8px;
}

/* Utilities */

@media (max-width: 900px) {
  .menu {
    display: none;
  }
  .menu.open {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .hamburger {
    display: block;
  }
  .contact-form {
    grid-template-columns: 1fr;
  }
}