body {
            background-color: #f5f7fb;
        }

        a {
          text-decoration: none;
        }
        .sidebar {
            background: #fff;
            min-height: 100vh;
            box-shadow: 2px 0 5px rgba(0,0,0,0.05);
        }
        .nav-link {
            color: #6c757d;
            padding: 0.75rem 1.5rem;
            border-right: 3px solid transparent;
            transition: all 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: #EB2A2F;
            //background-color: #f8f9fa;
            border-right-color: #EB2A2F;
        }
        .content-wrapper {
            padding: 2rem;
        }
        .card {
            border: none;
            box-shadow: 0 0 20px rgba(0,0,0,0.08);
            margin-bottom: 1.5rem;
        }
        .card-header {
            background: #fff;
            border-bottom: 1px solid #e9ecef;
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            color: #495057;
        }

        .form-switch .form-check-input {
            width: 3rem;
            height: 1.5rem;
            cursor: pointer;
        }
        .form-switch .form-check-input:checked {
            background-color: #EB2A2F;
            border-color: #EB2A2F;
        }
        .avatar-upload {
            position: relative;
            max-width: 150px;
            margin: 0 auto;
        }
        .avatar-preview {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            border: 3px solid #e9ecef;
            background-size: cover;
            background-position: center;
            background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" width="150" height="150"%3E%3Crect fill="%23e9ecef" width="150" height="150"/%3E%3Ctext fill="%236c757d" font-family="Arial" font-size="60" x="50%25" y="50%25" text-anchor="middle" dy=".3em"%3EUS%3C/text%3E%3C/svg%3E');
        }
        .avatar-upload input {
            display: none;
        }
        .avatar-upload label {
            position: absolute;
            bottom: 0;
            right: 0;
            background: #EB2A2F;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
        }
        .avatar-upload label:hover {
            background: #326abc;
        }
        .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 1rem;
        }
        .page-title {
            font-size: 1.75rem;
            font-weight: 600;
            color: #212529;
            margin-bottom: 0.5rem;
        }
        @media (max-width: 768px) {
            .sidebar {
                min-height: auto;
            }
        }