/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Minimal Black & White Theme */
  --black: #000000;
  --white: #FFFFFF;
  --gray-light: #CCCCCC;
  --gray-medium: #999999;
  --gray-dark: #333333;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  background: var(--black);
  color: var(--white);
  line-height: 1.6;
  min-height: 100vh;
}

/* No scroll layout for index/404 pages */
body.no-scroll {
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

body.no-scroll nav {
  flex-shrink: 0;
}

body.no-scroll .hero {
  flex: 1;
  min-height: auto;
  padding: var(--spacing-md) 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.no-scroll footer {
  flex-shrink: 0;
  margin-top: 0;
  padding: var(--spacing-md) 0;
}

/* Typography */
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: var(--spacing-sm);
}

p {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--gray-light);
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--white);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Navigation */
nav {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--gray-dark);
}

.nav-content {
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-links a {
  color: var(--white);
  font-weight: 500;
  font-size: 0.95rem;
}

/* Hero Section */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.hero .tagline {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  color: var(--gray-light);
  margin-bottom: var(--spacing-lg);
}

.download-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.btn {
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background: var(--white);
  color: var(--black);
}

.btn-primary:hover {
  background: var(--gray-light);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--white);
}

.btn-secondary:hover {
  background: var(--white);
  color: var(--black);
  transform: translateY(-2px);
}

/* Content Section */
.content-section {
  padding: var(--spacing-xl) 0;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}

.legal-content h2 {
  margin-top: var(--spacing-lg);
  color: var(--white);
}

.legal-content h3 {
  margin-top: var(--spacing-md);
  color: var(--white);
}

.legal-content ul {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.legal-content li {
  margin-bottom: var(--spacing-xs);
  color: var(--gray-light);
}

/* Footer */
footer {
  border-top: 1px solid var(--gray-dark);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.footer-links a {
  color: var(--gray-medium);
  font-size: 0.9rem;
}

.copyright {
  color: var(--gray-medium);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    gap: var(--spacing-sm);
  }

  .download-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    align-items: center;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content {
  animation: fadeIn 0.8s ease-out;
}