/* ==========================================================================
   REGWAVE - MODERN PREMIUM DESIGN SYSTEM
   ========================================================================== */

:root {
  /* Color Tokens - Modern Dark Theme */
  --bg-dark: #0b0f19;
  --bg-card: #13192b;
  --bg-card-hover: #1a233b;
  --bg-sidebar: #0f1423;
  
  --primary: #6366f1;           /* Vibrant Indigo */
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  
  --paid: #10b981;              /* Emerald Green */
  --paid-bg: rgba(16, 185, 129, 0.12);
  --paid-border: rgba(16, 185, 129, 0.3);
  
  --pending: #f59e0b;           /* Warm Amber */
  --pending-bg: rgba(245, 158, 11, 0.12);
  --pending-border: rgba(245, 158, 11, 0.3);
  
  --overdue: #ef4444;           /* Rose Red */
  --overdue-bg: rgba(239, 68, 68, 0.12);
  --overdue-border: rgba(239, 68, 68, 0.3);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.08);
  
  /* Modern Rounded Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Shadows & Glassmorphism */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  
  /* Fonts */
  --font-title: 'Outfit', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Light Theme Override */
[data-theme="light"] {
  --bg-dark: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --bg-sidebar: #ffffff;
  
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-glow: rgba(79, 70, 229, 0.15);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-body);
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

h1, h2, h3, h4 {
  font-family: var(--font-title);
}

button, input, select, textarea {
  font-family: var(--font-body);
  outline: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: var(--primary);
  text-decoration: none;
}

.fade-in {
  animation: fadeIn 0.2s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.pop-scale {
  animation: popScale 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes popScale {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}