:root {
  --color-primary: #8b7355;
  --color-primary-light: #b8956a;
  --color-primary-dark: #6b5643;
  --color-background: #fbf9f6;
  --color-surface: #ffffff;
  --color-text: #2d2d2d;
  --color-text-secondary: #6b6b6b;
  --color-border: #e8e4df;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --border-radius: 12px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica",
    sans-serif;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* Header */
.header {
  position: sticky;
  top: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-primary);
}

.nav {
  display: flex;
  gap: var(--spacing-md);
}

.nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  padding: var(--spacing-xl) 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary-dark);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.hero-platforms {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 115, 85, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn-coffee {
  background: #ffdd00;
  color: #000;
  font-size: 1.125rem;
}

.btn-coffee:hover {
  background: #ffcc00;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 221, 0, 0.4);
}

/* Window Mockup */
.window-mockup {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.window-header {
  background: #f5f5f5;
  padding: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

.window-dots {
  display: flex;
  gap: 0.5rem;
}

.window-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ddd;
}

.window-title {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.window-content {
  display: flex;
  height: 400px;
}

.mockup-sidebar {
  width: 200px;
  background: #fafafa;
  border-right: 1px solid var(--color-border);
}

.mockup-main {
  flex: 1;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mockup-line {
  height: 12px;
  background: var(--color-border);
  border-radius: 4px;
}

.mockup-line.short {
  width: 60%;
}

.mockup-line.medium {
  width: 80%;
}

/* Features */
.features {
  padding: var(--spacing-xl) 0;
  background: var(--color-surface);
}

.features h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.feature-card {
  padding: var(--spacing-md);
  background: var(--color-background);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary-dark);
}

.feature-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Download */
.download {
  padding: var(--spacing-xl) 0;
}

.download h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.download-card {
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border-radius: var(--border-radius);
  border: 2px solid var(--color-border);
  text-align: center;
  transition: all 0.2s;
}

.download-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(139, 115, 85, 0.15);
}

.download-icon {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.download-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary-dark);
}

.download-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.download-note {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
}

.download-note a {
  color: var(--color-primary);
  text-decoration: none;
}

.download-note a:hover {
  text-decoration: underline;
}

.text-small {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

/* Support */
.support {
  padding: var(--spacing-xl) 0;
  background: var(--color-surface);
}

.support-card {
  background: linear-gradient(135deg, #ffdd00 0%, #ffa500 100%);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  text-align: center;
}

.support-content h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  color: #000;
}

.support-content p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  color: rgba(0, 0, 0, 0.8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Footer */
.footer {
  padding: var(--spacing-lg) 0 var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

.footer-column h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.footer-column a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: var(--spacing-xs);
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-image {
    order: -1;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .nav {
    display: none;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xs);
  }
}