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

:root {
  --primary: #E8A4B8;
  --primary-dark: #D4899E;
  --text: #2D2D2D;
  --text-light: #666;
  --background: #FDF8F9;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--background);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  padding: 1.5rem 2rem;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-dark);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--primary-dark);
}

/* Hero */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.hero {
  text-align: center;
  max-width: 600px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 1.5rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.description {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.app-store-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.app-store-btn img {
  height: 50px;
  transition: transform 0.2s;
}

.app-store-btn:hover img {
  transform: scale(1.05);
}

/* Footer */
footer {
  padding: 2rem;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--primary-dark);
}

.copyright {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* PDF Viewer Page */
.pdf-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.pdf-header {
  padding: 1rem 2rem;
  background: white;
  border-bottom: 1px solid #eee;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.back-link {
  color: var(--primary-dark);
  text-decoration: none;
  font-size: 0.95rem;
}

.pdf-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.pdf-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.pdf-embed {
  width: 100%;
  max-width: 900px;
  height: 80vh;
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.pdf-placeholder {
  text-align: center;
  padding: 4rem 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.pdf-placeholder h2 {
  color: var(--text);
  margin-bottom: 1rem;
}

.pdf-placeholder p {
  color: var(--text-light);
}

.download-btn {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--primary);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: background 0.2s;
}

.download-btn:hover {
  background: var(--primary-dark);
}