/* Swiss Spa Design System - Blank Space Copy
 * Minimalist, elegant, and precise design inspired by Swiss design principles
 * Clean typography, perfect spacing, and cohesive color palette
 */

/* CSS Variables for Consistent Design System */
:root {
  /* Typography - Apple/System Fonts */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-secondary: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
  
  /* Swiss Color Palette - Minimalist & Professional */
  --color-primary: #1d1d1f;       /* Deep black (Apple black) */
  --color-secondary: #86868b;     /* Medium gray */
  --color-tertiary: #f5f5f7;      /* Light gray background */
  --color-accent: #007aff;        /* Apple blue */
  --color-accent-light: #5ac8fa;  /* Light blue */
  --color-success: #34c759;       /* Green */
  --color-warning: #ff9500;       /* Orange */
  --color-error: #ff3b30;         /* Red */
  
  /* Background Colors */
  --bg-primary: #ffffff;          /* Pure white */
  --bg-secondary: #f5f5f7;        /* Light gray */
  --bg-tertiary: #e8e8ed;         /* Medium gray */
  --bg-dark: #1d1d1f;             /* Dark mode */
  
  /* Text Colors */
  --text-primary: #1d1d1f;        /* Primary text */
  --text-secondary: #86868b;       /* Secondary text */
  --text-tertiary: #a1a1a6;       /* Tertiary text */
  --text-inverse: #ffffff;        /* White text */
  
  /* Swiss Spacing System - Perfect 8pt grid */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  --spacing-4xl: 6rem;     /* 96px */
  --spacing-5xl: 8rem;     /* 128px */
  
  /* Border Radius - Consistent & Subtle */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  
  /* Shadows - Soft & Minimal */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  
  /* Transitions - Smooth & Fast */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Max Widths - Readable Content */
  --max-width-sm: 640px;
  --max-width-md: 768px;
  --max-width-lg: 1024px;
  --max-width-xl: 1280px;
  --max-width-2xl: 1536px;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #f5f5f7;
    --color-secondary: #a1a1a6;
    --color-tertiary: #1d1d1f;
    --bg-primary: #1d1d1f;
    --bg-secondary: #2d2d30;
    --bg-tertiary: #3d3d40;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-tertiary: #86868b;
  }
}

/* Base Styles - Swiss Minimalism */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

/* Typography System - Perfect Hierarchy */
.heading-display {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.heading-hero {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.heading-1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.heading-2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.heading-3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.heading-4 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.body-large {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.body-medium {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.body-small {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.caption {
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--text-tertiary);
  font-family: var(--font-secondary);
}

/* Layout System - Perfect Spacing */
.container {
  width: 100%;
  max-width: var(--max-width-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.container-lg {
  max-width: var(--max-width-2xl);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Grid System - Swiss Precision */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

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

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

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* Spacing Utilities */
.pt-xs { padding-top: var(--spacing-xs); }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }
.pt-2xl { padding-top: var(--spacing-2xl); }
.pt-3xl { padding-top: var(--spacing-3xl); }
.pt-4xl { padding-top: var(--spacing-4xl); }
.pt-5xl { padding-top: var(--spacing-5xl); }

.pb-xs { padding-bottom: var(--spacing-xs); }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }
.pb-2xl { padding-bottom: var(--spacing-2xl); }
.pb-3xl { padding-bottom: var(--spacing-3xl); }
.pb-4xl { padding-bottom: var(--spacing-4xl); }
.pb-5xl { padding-bottom: var(--spacing-5xl); }

.px-xs { padding-left: var(--spacing-xs); padding-right: var(--spacing-xs); }
.px-sm { padding-left: var(--spacing-sm); padding-right: var(--spacing-sm); }
.px-md { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-lg { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }
.px-xl { padding-left: var(--spacing-xl); padding-right: var(--spacing-xl); }

.py-xs { padding-top: var(--spacing-xs); padding-bottom: var(--spacing-xs); }
.py-sm { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-md { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-lg { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-xl { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.py-2xl { padding-top: var(--spacing-2xl); padding-bottom: var(--spacing-2xl); }
.py-3xl { padding-top: var(--spacing-3xl); padding-bottom: var(--spacing-3xl); }
.py-4xl { padding-top: var(--spacing-4xl); padding-bottom: var(--spacing-4xl); }
.py-5xl { padding-top: var(--spacing-5xl); padding-bottom: var(--spacing-5xl); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mt-3xl { margin-top: var(--spacing-3xl); }
.mt-4xl { margin-top: var(--spacing-4xl); }
.mt-5xl { margin-top: var(--spacing-5xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }
.mb-3xl { margin-bottom: var(--spacing-3xl); }
.mb-4xl { margin-bottom: var(--spacing-4xl); }
.mb-5xl { margin-bottom: var(--spacing-5xl); }

/* Component Styles - Swiss Elegance */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-tertiary);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-featured {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border: 1px solid var(--color-accent);
  position: relative;
  overflow: hidden;
}

.card-featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Button System - Minimal & Functional */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  gap: var(--spacing-sm);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background: var(--color-accent);
  color: white;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: var(--bg-secondary);
  transform: translateY(-1px);
}

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn-small {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

/* Icon System - Consistent & Professional */
.icon {
  width: 24px;
  height: 24px;
  display: inline-block;
  vertical-align: middle;
}

.icon-sm {
  width: 20px;
  height: 20px;
}

.icon-lg {
  width: 32px;
  height: 32px;
}

.icon-xl {
  width: 48px;
  height: 48px;
}

/* Navigation - Swiss Precision */
.nav {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--color-tertiary);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  background: rgba(var(--bg-primary), 0.8);
}

.nav-container {
  max-width: var(--max-width-2xl);
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-link.active {
  color: var(--color-primary);
}

/* Hero Section - Minimal & Impactful */
.hero {
  padding: var(--spacing-5xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
  max-width: var(--max-width-md);
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-accent);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

/* Features Grid - Clean Layout */
.features {
  padding: var(--spacing-5xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  background: var(--bg-primary);
  border: 1px solid var(--color-tertiary);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

/* Pricing Cards - Premium Design */
.pricing {
  padding: var(--spacing-5xl) 0;
  background: var(--bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

.pricing-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-tertiary);
  padding: var(--spacing-2xl);
  text-align: center;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card.featured {
  border-color: var(--color-accent);
  transform: scale(1.05);
}

.pricing-card.featured::before {
  content: 'MOST POPULAR';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: var(--spacing-lg) 0;
}

.pricing-price .currency {
  font-size: 1.5rem;
  vertical-align: top;
}

.pricing-price .period {
  font-size: 1rem;
  color: var(--text-secondary);
  vertical-align: bottom;
}

/* Footer - Clean & Professional */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--color-tertiary);
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-section h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-tertiary);
  color: var(--text-tertiary);
}

/* Mobile Responsive - Swiss Precision */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-links {
    display: none;
  }
  
  .hero {
    padding: var(--spacing-3xl) 0;
  }
  
  .features,
  .pricing {
    padding: var(--spacing-3xl) 0;
  }
  
  .features-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .heading-display {
    font-size: 2rem;
  }
  
  .heading-hero {
    font-size: 1.75rem;
  }
}

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

.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.fade-in-delay {
  animation: fadeIn 0.6s ease-out 0.2s forwards;
  opacity: 0;
}

/* Utility Classes - Swiss Efficiency */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }

.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-tertiary { background: var(--bg-tertiary); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: 50%; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Responsive Visibility */
@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .hide-desktop {
    display: none !important;
  }
}

/* Print Styles */
@media print {
  .nav,
  .footer,
  .btn {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
}