/* Mirror Chat - Modern CSS Styles
   Created: June 6, 2024
*/

:root {
  /* Color Palette */
  --primary: #36d1c4;
  --primary-dark: #2bb3a8;
  --primary-light: #5cdfd4;
  --secondary: #8A56AC;
  --secondary-dark: #7545a0;
  --secondary-light: #a77bc0;
  --accent: #ffd700;
  --accent-dark: #e6c200;
  --gradient-primary: linear-gradient(135deg, #36d1c4 0%, #5b86e5 100%);
  --gradient-secondary: linear-gradient(135deg, #8A56AC 0%, #5b86e5 100%);
  
  /* Text Colors */
  --text-dark: #222;
  --text-medium: #555;
  --text-light: #fff;
  --text-muted: #666;
  
  /* Background Colors */
  --bg-light: #f9f9fa;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 10px 30px rgba(91, 134, 229, 0.2);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-pill: 50px;
  
  /* Transitions */
  --transition-fast: all 0.2s ease;
  --transition-normal: all 0.3s ease;
  --transition-slow: all 0.5s ease;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  
  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  font-weight: 400;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: var(--secondary);
  transition: var(--transition-fast);
}

a:hover {
  color: var(--secondary-dark);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header Styles */
.header {
  background: var(--gradient-primary);
  color: var(--text-light);
  padding: var(--space-xl) 0;
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
  transform: rotate(-15deg);
  z-index: 1;
}

.header-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: var(--container-md);
  margin: 0 auto;
}

.header-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.header-subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--space-md);
  opacity: 0.9;
}

.header-description {
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
  max-width: 80%;
  margin-left: auto;
  margin-right: auto;
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--text-light);
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--text-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--text-light);
}

.btn-secondary:hover {
  background: var(--secondary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

/* Section Styles */
.section {
  padding: var(--space-xl) 0;
}

.section-title {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--text-dark);
  position: relative;
  padding-bottom: var(--space-sm);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-pill);
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-lg);
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  color: var(--primary);
  background: rgba(54, 209, 196, 0.1);
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-left: auto;
  margin-right: auto;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-dark);
}

.feature-description {
  color: var(--text-medium);
  font-size: 1rem;
  margin-bottom: 0;
}

/* Pro Features */
.pro-badge {
  display: inline-block;
  background: var(--accent);
  color: var(--text-dark);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  padding: 0.2rem 0.8rem;
  margin-left: var(--space-xs);
  vertical-align: middle;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pro-section {
  background: linear-gradient(rgba(138, 86, 172, 0.05), rgba(91, 134, 229, 0.05));
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-xl);
}

.pro-section .section-title::after {
  background: var(--gradient-secondary);
}

/* Legal Sections */
.legal-section {
  background: var(--bg-white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin-top: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.legal-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-dark);
}

.legal-content {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Footer */
.footer {
  background: var(--bg-white);
  padding: var(--space-lg) 0;
  margin-top: var(--space-xl);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.footer-link {
  color: var(--secondary);
  font-weight: 500;
  transition: var(--transition-fast);
}

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

.footer-copyright {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  animation: fadeIn 1s forwards;
}

.slide-up {
  opacity: 0;
  transform: translateY(30px);
  animation: slideUp 0.8s forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .header-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .features-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .header {
    padding: var(--space-lg) 0;
  }
  
  .header-title {
    font-size: 2rem;
  }
  
  .header-subtitle {
    font-size: 1.1rem;
  }
  
  .section {
    padding: var(--space-lg) 0;
  }
  
  .section-title {
    font-size: 1.8rem;
    margin-bottom: var(--space-md);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  
  .feature-card {
    padding: var(--space-md);
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .header-title {
    font-size: 1.8rem;
  }
  
  .header-description {
    font-size: 1rem;
    max-width: 95%;
  }
  
  .btn {
    padding: 0.7rem 1.5rem;
  }
  
  .btn-lg {
    padding: 0.8rem 2rem;
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .feature-icon {
    width: 60px;
    height: 60px;
    font-size: 2rem;
  }
  
  .feature-title {
    font-size: 1.2rem;
  }
  
  .footer-links {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
  }
}