:root {
  --primary-color: #0d6efd;
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
}

body {
  background-color: var(--bg-color);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  margin-bottom: 20px;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--card-bg);
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
  z-index: 1000;
  display: flex;
  justify-content: space-around;
  padding: 10px 0;
}

.bottom-nav a {
  text-align: center;
  color: #6c757d;
  text-decoration: none;
  font-size: 0.8rem;
}

.bottom-nav a.active {
  color: var(--primary-color);
}

.bottom-nav i {
  display: block;
  font-size: 1.2rem;
  margin-bottom: 3px;
}

.content-wrapper {
  padding-bottom: 70px; /* Space for bottom nav */
}

/* Fast add button */
.btn-fab {
  position: fixed;
  bottom: 80px;
  right: 20px;
  border-radius: 50%;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 10px rgba(13, 110, 253, 0.3);
  z-index: 1050;
}

/* Chart containers */
.chart-container {
  position: relative;
  height: 250px;
  width: 100%;
}