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

:root {
  /* Colors - Light Theme */
  --primary: #4f46e5;
  --primary-light: #818cf8;
  --primary-dark: #3730a3;
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  
  /* Status Colors */
  --status-new: #3b82f6; /* Blue */
  --status-progress: #f59e0b; /* Amber */
  --status-done: #10b981; /* Green */
  --status-late: #ef4444; /* Red */
  
  /* AI Accent */
  --ai-accent: linear-gradient(135deg, #a855f7, #ec4899);
  --ai-glow: rgba(168, 85, 247, 0.2);

  /* Shadows & Radius */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Font */
  --font-family: 'Inter', sans-serif;
}

[data-theme="dark"] {
  /* Colors - Dark Theme */
  --bg-color: #0f172a;
  --surface-color: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
  /* Mobile optimized */
  max-width: 480px;
  margin: 0 auto;
  position: relative;
  min-height: 100vh;
  box-shadow: 0 0 20px rgba(0,0,0,0.05);
  overflow-x: hidden;
  padding-bottom: 80px; /* Space for bottom nav */
}

/* Utilities */
.container {
  padding: 20px;
}

.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }

/* Scrollbar hidden for clean mobile look */
::-webkit-scrollbar {
  width: 0px;
  background: transparent;
}

/* Glassmorphism utility */
.glass {
  background: rgba(var(--surface-color), 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}