:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #666666;
  --line: #e6e3df;
  --accent: #1f4d7a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
    flex: 1 0 auto;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.narrow {
  width: min(760px, calc(100% - 2rem));
}

.site-header {
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  display: block;
  padding: .6rem;
}

.navbar {
  display: flex;
  position: relative;
  justify-content: space-between;
  align-items: center;
}

.navbar-links {
    height: 100%;
}

.navbar-links ul {
    display: flex;
    margin: 0;
    padding: 0;
}

.navbar-links li {
    list-style: none;
}

.navbar-links li a {
    display: block;
    text-decoration: none;
    padding: 1rem;
}

.navbar-links li:hover {
  background: #f0f0ee;
}

.toggle-button {
  position: absolute;
  top: .75rem;
  right: 1rem;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
}

.toggle-button .bar {
    height: 3px;
    width: 100%;
    background-color: var(--text);
    border-radius: 10px;
}

.section {
  padding: 4rem 0;
}

.section.alt {
  background: #f1f2f4;
}

h2 {
  font-size: 1.8rem;
  margin-top: 0;
  margin-bottom: 1.2rem;
}

h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
}

.site-footer {
  flex-shrink: 0;
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
}


@media (max-width: 800px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .toggle-button {
    display: flex;
  }

  .navbar-links {
    display: none;
    width: 100%;
  }

  .navbar-links ul {
    width: 100%;
    flex-direction: column;
  }

  .navbar-links ul li {
    text-align: center;
  }

  .navbar-links ul li a {
    padding: .5rem 1rem;
  }

  .navbar-links.active {
    display: flex;
  }
}