@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Colors */
  --primary-color: #FF9800; /* Vibrant Orange */
  --primary-hover: #F57C00;
  --primary-light: rgba(255, 152, 0, 0.1);
  --secondary-color: #0F172A; /* Slate 900 */
  --accent-color: #2563EB; /* Royal Blue */
  --background-color: #F8FAFC; /* Slate 50 */
  --surface-color: #FFFFFF;
  --text-primary: #1E293B; /* Slate 800 */
  --text-secondary: #64748B; /* Slate 500 */
  --text-muted: #94A3B8; /* Slate 400 */
  --border-color: #E2E8F0; /* Slate 200 */
  --border-color-light: #F1F5F9;
  
  /* Status Colors */
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --error-color: #EF4444;
  --locked-color: #94A3B8;
  
  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --font-size-xs: 12px;
  --font-size-sm: 13.5px;
  --font-size-base: 15.5px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-xxl: 30px;
  
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semi: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  --line-height-tight: 1.25;
  --line-height-heading: 1.35;
  --line-height-base: 1.7;
  --letter-spacing-heading: -0.015em;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 64px;
  
  /* Borders & Shadows */
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --box-shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --box-shadow-md: 0 6px 20px rgba(15, 23, 42, 0.07);
  --box-shadow-lg: 0 12px 36px rgba(15, 23, 42, 0.1);
  
  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Lucide Icons Adjustments */
.lucide { vertical-align: text-bottom; }
.lucide.icon-sm { width: 16px; height: 16px; }
.lucide.icon-xl { width: 44px; height: 44px; }
.student-nav-link .lucide { margin-right: 8px; }