:root {
  --bg-color: #f7f5f0;
  --surface-color: #ffffff;
  --text-color: #2c2925;
  --text-muted: #615c54;
  --accent-color: #8b4513;
  --accent-hover: #6a330e;
  --border-color: #d6d0c4;
  --focus-ring: #2c2925;
  --max-width: 900px;
  --spacing-unit: 1.5rem;
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a1816;
    --surface-color: #24211e;
    --text-color: #e6e2dc;
    --text-muted: #aba398;
    --accent-color: #c0723d;
    --accent-hover: #d88954;
    --border-color: #3e3933;
    --focus-ring: #e6e2dc;
  }
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem var(--spacing-unit);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-link {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-color);
  text-decoration: none;
}

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

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

nav a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.25rem 0;
}

nav a:hover,
nav a:focus {
  color: var(--accent-color);
  border-bottom: 2px solid var(--accent-color);
}

main {
  max-width: var(--max-width);
  width: 100%;
  margin: 2rem auto;
  padding: 0 var(--spacing-unit);
  flex: 1;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
  line-height: 1.25;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

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

li {
  margin-bottom: 0.35rem;
}

a {
  color: var(--accent-color);
  text-decoration: underline;
}

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

.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

form {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input[type="email"],
input[type="text"],
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 1rem;
  margin-bottom: 1rem;
}

input[type="email"]:focus,
input[type="text"]:focus,
textarea:focus {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

button {
  background-color: var(--accent-color);
  color: #ffffff;
  border: none;
  border-radius: 4px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  cursor: pointer;
  font-weight: 500;
}

button:hover,
button:focus {
  background-color: var(--accent-hover);
}

footer {
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: 2rem var(--spacing-unit);
  margin-top: auto;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--accent-color);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}