body {
    background-color: #f8f9fa;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: #212529;
    margin: 0;
}

.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid #dee2e6;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: -0.5px;
}

.sidebar {
    height: calc(100vh - 56px);
    background-color: #ffffff;
    border-right: 1px solid #dee2e6;
    padding: 1.5rem;
}

.note-card {
    background: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: box-shadow 0.2s;
}

.note-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.btn-primary {
    border-radius: 4px;
    font-weight: 500;
}

.modal-content {
    border-radius: 4px;
    border: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.form-control {
    border-radius: 4px;
    border: 1px solid #dee2e6;
}

.form-control:focus {
    box-shadow: none;
    border-color: #0d6efd;
}

.ai-assistant-btn {
    background: #f0f7ff;
    color: #0d6efd;
    border: 1px solid #cfe2ff;
    border-radius: 4px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.ai-assistant-btn:hover {
    background: #e2efff;
}

#notes-container {
    padding: 2rem;
}

.empty-state {
    text-align: center;
    padding: 5rem 2rem;
    color: #6c757d;
}