/* ==========================================================================
   FinanFlow - Core Design System & Global Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette - Dark Luxury Obsidian */
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-surface: #1e293b;
  --bg-surface-hover: #334155;
  --bg-glass: rgba(30, 41, 59, 0.65);
  --bg-glass-card: rgba(15, 23, 42, 0.75);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent Colors */
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.25);

  --color-income: #10b981;
  --color-income-glow: rgba(16, 185, 129, 0.2);
  --color-expense: #f43f5e;
  --color-expense-glow: rgba(244, 63, 94, 0.2);
  --color-card: #8b5cf6;
  --color-warning: #f59e0b;
  --color-info: #06b6d4;

  /* Typography */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Shadows & Effects */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base Settings */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-surface-hover);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

/* Links & Typography Utility */
a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: #818cf8;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Glassmorphism Card Style */
.glass-card {
  background: var(--bg-glass-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: border-color var(--transition-fast), transform var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

/* App View Control */
.app-view {
  display: none;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.app-view.active {
  display: block;
  opacity: 1;
}

/* Helper Utilities */
.text-income { color: var(--color-income) !important; }
.text-expense { color: var(--color-expense) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-muted { color: var(--text-muted) !important; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-income {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-income);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-expense {
  background: rgba(244, 63, 94, 0.15);
  color: var(--color-expense);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.badge-pending {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-paid {
  background: rgba(6, 182, 212, 0.15);
  color: var(--color-info);
  border: 1px solid rgba(6, 182, 212, 0.3);
}