:root {
  --background: #f6faf9;
  --text: #2c3e50;
  --accent: #6fc3b2;
  --highlight: #ffe9b0;
  --header: #34495e;
  --secondary-text: #5d6d7e;
  --card-bg: #ffffff;
  --border: #dce1e3;
}

body.dark {
  --background: #121212;
  --text: #f0f0f0;
  --accent: #5cc6ba;
  --highlight: #fecf77;
  --header: #ffffff;
  --secondary-text: #aaa;
  --card-bg: #1e1e1e;
  --border: #333;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.7;
  margin: 0;
  transition: background 0.3s ease, color 0.3s ease;
}

header {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--card-bg);
}

h1, h2, h3 {
  font-family: 'Montserrat', sans-serif;
  color: var(--header);
  font-weight: 600;
}

.tagline {
  font-size: 1.2rem;
  color: var(--secondary-text);
}

.cta-button {
  display: inline-block;
  margin-top: 1rem;
  background: var(--accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
}

.hero {
  background: linear-gradient(135deg, #e8fdf6, #f6faf9);
  padding: 4rem 1rem;
  border-bottom: 1px solid var(--border);
}

.hero-text {
  max-width: 600px;
  padding: 1rem;
  margin: 0 auto;
}

.download-buttons a img {
  width: 150px;
  margin: 0.5rem;
}

.features {
  background: var(--card-bg);
  padding: 3rem 1rem;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature h3 {
  margin: 0.5rem 0;
  color: var(--header);
}

.feature p {
  color: var(--secondary-text);
}

footer {
  background: var(--card-bg);
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.9rem;
}

footer nav a {
  color: var(--accent);
  margin: 0 0.5rem;
  text-decoration: none;
}

.content-wrapper {
  max-width: 900px;
  margin: 2rem auto;
  padding: 3rem 2rem;
  background: var(--card-bg);
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .content-wrapper {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .content-wrapper {
    padding: 1.5rem 1rem;
  }
}

.toggle-darkmode {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}