body {
    font-family: 'Roboto', 'Inter', sans-serif;
    background-color: #f4f7f6;
}

.app-header {
    background: #fff;
    padding: 1rem 0;
    border-bottom: 1px solid #e9ecef;
}

.user-initials {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(45deg, #0EA5E9, #06B6D4);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.kpi-card {
    border: none;
    border-radius: 1rem; /* rounded-2xl */
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    background-color: #fff;
    transition: all 0.3s ease;
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.kpi-icon {
    width: 36px;
    height: 36px;
    stroke-width: 1.5;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-around;
    padding: 0.75rem 0.5rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #6c757d;
    text-decoration: none;
    transition: all 0.2s ease;
}

.nav-item.active {
    color: #0EA5E9;
    font-weight: 600;
}

.nav-item i {
    width: 24px;
    height: 24px;
    margin-bottom: 4px;
}

.nav-item span {
    font-size: 0.75rem;
}

.task-card {
    border: none;
    border-radius: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    background-color: #fff;
}

.task-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #eef8ff;
    color: #0EA5E9;
}

.task-icon i {
    width: 24px;
    height: 24px;
}