:root {
  /* Brand R2 */
  --color-primary: #2F609F;
  --color-primary-dark: #1E4270;
  --color-primary-light: #4A7BC4;
  --color-success: #1ABC9C;
  --color-success-light: #48C9B0;
  --color-gray: #848688;
  --color-gray-light: #C4C6C8;
  
  /* Extended */
  --color-surface: #FFFFFF;
  --color-bg: #F5F6F8;
  --color-text: #2D3748;
  --color-muted: #848688;
  --color-border: #E2E8F0;
  
  /* Typography */
  --font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Borders */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
  
  /* Transitions */
  --transition: 0.2s ease;
  --transition-fast: 0.15s ease;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Base styles */
body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-success {
  background-color: var(--color-success);
  border-color: var(--color-success);
}

/* Form controls */
.form-control {
  border-radius: var(--radius-sm);
  border-color: var(--color-border);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(47, 96, 159, 0.15);
}