:root {
  --nature-cream: #F5F1E8;
  --warm-sand: #E8DCC4;
  --sage-green: #8B9D83;
  --deep-forest: #3D5A4C;
  --terracotta: #C77B58;
  --warm-charcoal: #3A3633;
  --soft-white: #FEFDFB;
  --muted-gold: #B8956A;
}

[data-theme="dark"] {
  --nature-cream: #2A2822;
  --warm-sand: #3D3830;
  --sage-green: #9CAD95;
  --deep-forest: #5A7A6A;
  --terracotta: #D9947A;
  --warm-charcoal: #E8E4DC;
  --soft-white: #1F1D19;
  --muted-gold: #C4A876;
}

html {
  height: 100%;
  width: 100%;
}

body {
  background-color: var(--nature-cream);
  color: var(--warm-charcoal);
  font-family: 'Georgia', 'Times New Roman', serif;
  line-height: 1.8;
  transition: background-color 0.3s ease, color 0.3s ease;
}

nav {
  background-color: var(--soft-white);
  border-bottom: 1px solid var(--warm-sand);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

nav strong {
  color: var(--deep-forest);
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  transition: color 0.3s ease;
}

nav a {
  color: var(--sage-green);
  text-decoration: none;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

nav [role="button"] {
  background-color: var(--deep-forest);
  border-color: var(--deep-forest);
  color: var(--soft-white);
  padding: 0.5rem 1.5rem;
  transition: all 0.3s ease;
}

nav [role="button"]:hover {
  background-color: var(--sage-green);
  border-color: var(--sage-green);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(61, 90, 76, 0.2);
}

main {
  padding: 4rem 1rem;
}

h2 {
  color: var(--deep-forest);
  font-size: 2.5rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  transition: color 0.3s ease;
}

h3 {
  color: var(--sage-green);
  font-size: 1.5rem;
  font-weight: 400;
  margin-top: 3rem;
  margin-bottom: 1rem;
  transition: color 0.3s ease;
}

hgroup h2 {
  margin-bottom: 0.25rem;
}

hgroup h3 {
  color: var(--muted-gold);
  font-size: 1.25rem;
  font-weight: 300;
  margin-top: 0;
  font-style: italic;
  transition: color 0.3s ease;
}

p {
  color: var(--warm-charcoal);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  max-width: 75ch;
  transition: color 0.3s ease;
}

figure {
  margin: 3rem 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

figure:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
}

figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 500px;
  transition: transform 0.4s ease;
}

figure:hover img {
  transform: scale(1.05);
}

figcaption {
  background-color: var(--soft-white);
  padding: 1rem 1.5rem;
  border-top: 2px solid var(--warm-sand);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

figcaption a {
  color: var(--sage-green);
  text-decoration: none;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

figcaption a:hover {
  color: var(--terracotta);
}

section[aria-label="Subscribe example"] {
  background: linear-gradient(135deg, var(--deep-forest) 0%, var(--sage-green) 100%);
  padding: 4rem 0;
  margin-top: 4rem;
  transition: background 0.3s ease;
}

section[aria-label="Subscribe example"] article {
  background-color: var(--soft-white);
  border-radius: 12px;
  padding: 3rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  transition: background-color 0.3s ease;
}

section[aria-label="Subscribe example"] h2 {
  color: var(--deep-forest);
  text-align: center;
}

section[aria-label="Subscribe example"] h3 {
  color: var(--sage-green);
  text-align: center;
  margin-top: 0;
  font-size: 1.1rem;
  font-weight: 300;
}

form input[type="text"],
form input[type="email"] {
  border: 2px solid var(--warm-sand);
  background-color: var(--nature-cream);
  color: var(--warm-charcoal);
  border-radius: 8px;
  transition: all 0.3s ease;
}

form input[type="text"]:focus,
form input[type="email"]:focus {
  border-color: var(--sage-green);
  background-color: var(--soft-white);
  box-shadow: 0 0 0 3px rgba(139, 157, 131, 0.1);
}

form button[type="submit"] {
  background-color: var(--terracotta);
  border-color: var(--terracotta);
  color: var(--soft-white);
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.3s ease;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  letter-spacing: 0.03em;
}

form button[type="submit"]:hover {
  background-color: var(--deep-forest);
  border-color: var(--deep-forest);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(199, 123, 88, 0.3);
}

footer {
  background-color: var(--soft-white);
  border-top: 1px solid var(--warm-sand);
  padding: 2rem 0;
  margin-top: 4rem;
  text-align: center;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

footer a {
  color: var(--sage-green);
  text-decoration: none;
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--terracotta);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.social-links a {
  color: var(--deep-forest);
  text-decoration: none;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  background-color: var(--nature-cream);
  border: 2px solid var(--sage-green);
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.social-links a:hover {
  background-color: var(--sage-green);
  color: var(--soft-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 157, 131, 0.3);
}

.theme-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
}

.theme-toggle button {
  background-color: var(--deep-forest);
  border: 2px solid var(--sage-green);
  color: var(--soft-white);
  padding: 0.75rem 1.25rem;
  border-radius: 50px;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-weight: 500;
}

.theme-toggle button:hover {
  background-color: var(--sage-green);
  border-color: var(--deep-forest);
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

@media (max-width: 768px) {
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  p {
    font-size: 1rem;
  }
  
  section[aria-label="Subscribe example"] article {
    padding: 2rem 1.5rem;
  }
  
  .theme-toggle {
    bottom: 1rem;
    right: 1rem;
  }
  
  .theme-toggle button {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }
}