:root {
  --background-dark: #1a1a1a;
  --text-light: #e0e0e0;
  --text-muted: #888;
  --primary-accent: #3b82f6; /* Blue */
  --secondary-accent: #10b981; /* Green */
  --panel-bg: #2d2d2d;
  --border-color: #3a3a3a;

  --accent-work: #3b82f6;
  --accent-study: #a855f7;
  --accent-health: #10b981;
  --accent-personal: #ec4899;
  --accent-fitness: #f97316;

  --priority-high: #ef4444;
  --priority-medium: #f97316;
  --priority-low: #3b82f6;
}

body {
  background-color: var(--background-dark);
  color: var(--text-light);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
}

.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background-color: var(--background-dark);
  border-right: 1px solid var(--border-color);
  padding: 2rem 1rem;
}

.main-content {
  flex-grow: 1;
  padding: 2rem;
}

.right-panel {
    width: 320px;
    background-color: var(--background-dark);
    border-left: 1px solid var(--border-color);
    padding: 2rem 1rem;
}

.sidebar h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 2rem;
    text-align: center;
}

.sidebar nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar nav a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
    transition: background-color 150ms ease-in-out;
}

.sidebar nav a:hover, .sidebar nav a.active {
    background-color: var(--panel-bg);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}