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

:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --success-color: #4caf50;
  --error-color: #f44336;
  --warning-color: #ff9800;
  --text-primary: #333;
  --text-secondary: #666;
  --text-light: #999;
  --bg-light: #f5f5f5;
  --bg-white: #ffffff;
  --border-color: #e0e0e0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.6;
}

#app {
  min-height: 100vh;
  position: relative;
}

.view {
  display: none;
  animation: fadeIn 0.3s ease-in;
}

.view.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Focus styles for accessibility */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Touch-friendly elements for mobile */
button,
.control-button,
.submit-button {
  min-height: 44px; /* iOS recommended touch target */
  -webkit-tap-highlight-color: rgba(102, 126, 234, 0.2);
}

/* Prevent text size adjustment on iOS */
input,
select,
textarea,
button {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* Better scrolling on mobile */
@media (max-width: 768px) {
  body {
    -webkit-overflow-scrolling: touch;
  }
  
  .interview-sidebar {
    -webkit-overflow-scrolling: touch;
  }
}